Разделы схем — 30 (всего 64)
AIR CONDITIONING ANTI-LOCK BRAKES ANTI-THEFT BODY CONTROL MODULES COMPUTER DATA LINES COOLING FAN CRUISE CONTROL DEFOGGERS ELECTRONIC POWER STEERING ENGINE PERFORMANCE EXTERIOR LIGHTS GROUND DISTRIBUTION HEADLIGHTS HORN INSTRUMENT CLUSTER INTERIOR LIGHTS POWER DISTRIBUTION POWER DOOR LOCKS POWER MIRRORS POWER SEATS POWER TOP/SUNROOF POWER WINDOWS RADIO SHIFT INTERLOCK STARTING/CHARGING SUPPLEMENTAL RESTRAINTS TRANSMISSION TRUNK, TAILGATE, FUEL DOOR WARNING SYSTEMS WIPER/WASHER
AIR CONDITIONING
2.2L VIN F 2.2L VIN F, Compressor Wiring Diagram for Chevrolet Cobalt LS 2008 List of elements for 2.2L VIN F, Compressor Wiring Diagram for Chevrolet Cobalt LS 2008: 37 5v ref A/c clutch fuse 10a A/c clutch relay A/c compressor clutch (left front of engine) A/c compressor clutch diode A/c refrigerant pressure sensor (in right front of engine compt, on a/c line, near compressor) A/c req sig A/c request indicator A/c request sig A/c request switch Batt Body control module (bcm) (under center dash, on right side of center console) Computer data lines system Ect sig Engine control module (ecm) (left side of engine compt, in front of underhood fuse block) Engine coolant temperature (ect) sensor (rear of engine, near exhaust manifold) G101 (left side of engine compt, under coolant reservoir) G203 (behind right side of dash) Gnd Hot at all times Hot in run or start Hot w/ run/ crank relay energized Hvac control module (center of dash, below radio) Hvac/ ip ign fuse 16 10a Hvac/pk3 + fuse 10 10a Ign 1 voltage Logic Low ref Pnk Power distribution system Press sens sig Rly ctrl Serial data Tan Underhood fuse block (in engine compt, next to left strut tower) X3 f2 X5 a4 2.2L VIN F, Manual A/C Wiring Diagram (1 of 2) for Chevrolet Cobalt LS 2008 List of elements for 2.2L VIN F, Manual A/C Wiring Diagram (1 of 2) for Chevrolet Cobalt LS 2008: 49 (in hvac jumper harness, 4.9 cm from hvac control assembly) j261 5 volt ref A/c req sig A/c request indicator A/c request sig A/c request switch Air temp dr cntrl Air temp dr pos Batt Bcm 3 fuse 30a Blower motor (under right side of dash) Blower motor resistor (under right side of dash, next to blower motor) Blower motor switch Body control module (bcm) (under center dash, on right side of center console) Close recir door Computer data lines system Defogger system Fresh air indicator G203 (behind right side of dash) Gnd Ground High Hot at all times Hot w/ run/ crank relay energized Hvac control module (center of dash, below radio) Hvac relay Hvac/ ip ign fuse 16 10a Hvac/pk3 + fuse 10 10a Ign 1 voltage Interior lights system Logic Low Mode door cntrl Mode door pos sig Mode switch Off Open recir door Pnk Power distribution system R defog relay cntrl R defog switch sig Recir- culation indicator Recir- culation switch Run/ crank relay control Serial data Tan Temperature control switch Underhood fuse block (in engine compt, next to left strut tower) X4 c2 2.2L VIN F, Manual A/C Wiring Diagram (2 of 2) for Chevrolet Cobalt LS 2008 List of elements for 2.2L VIN F, Manual A/C Wiring Diagram (2 of 2) for Chevrolet Cobalt LS 2008: 35 5v ref A/c cltch fuse 10a A/c clutch relay A/c compressor clutch (left front of engine) A/c compressor clutch diode A/c refrigerant pressure sensor (right front of engine compt, on a/c line, near compressor) A1 x5 A11 Air temperature actuator (center of dash, left side of hvac module) Computer data lines system Cooling fan 1 fuse 30a Cooling fan 1 relay Cooling fan 2 fuse 30a Cooling fan 2 relay E10 Ect sig Engine control module (ecm) (left side of engine compt, in front of underhood fuse block) Engine coolant temperature (ect) sensor (rear of engine, near exhaust manifold) Engine cooling fan (front of engine compt, attached to radiator) F10 G101 (left side of engine compt, under coolant reservoir) G111 (front of engine compt, near cooling fans) Hot at all times Hot in run or start Low ref Mode actuator (center of dash, left side of hvac module) Pnk Press sens sig Recirculation actuator (right side of dash, above blower motor) Rly ctrl Serial data Tan Underhood fuse block (in engine compt, next to left strut tower) X3 f2 X5 a4
2.4L VIN B 2.4L VIN B, Compressor Wiring Diagram for Chevrolet Cobalt LS 2008 List of elements for 2.4L VIN B, Compressor Wiring Diagram for Chevrolet Cobalt LS 2008: 37 5v ref A/c cltch fuse 10a A/c clutch relay A/c compressor clutch (left front of engine) A/c compressor clutch diode A/c refrigerant pressure sensor (right front of engine compt, on a/c line, near compressor) A/c req sig A/c request indicator A/c request sig A/c request switch A4 x5 Batt Body control module (bcm) (under center dash, on right side of center console) Computer data lines system Ect sig Engine control module (ecm) (left side of engine compt, in front of underhood fuse block) Engine coolant temperature (ect) sensor (rear, left side of engine, below exhaust) G101 (left side of engine compt, under coolant reservoir) G203 (behind right side of dash) Gnd Hot at all times Hot in run or start Hot w/ run/ crank relay energized Hvac control module (center of dash, below radio) Hvac/ ip ign fuse 16 10a Hvac/pk3 fuse 10 10a Ign 1 voltage Logic Low ref Pnk Power distribution system Press sens sig Rly ctrl Serial data Tan Underhood fuse block (in engine compt, next to left strut tower) X3 f2 2.4L VIN B, Manual A/C Wiring Diagram (1 of 2) for Chevrolet Cobalt LS 2008 List of elements for 2.4L VIN B, Manual A/C Wiring Diagram (1 of 2) for Chevrolet Cobalt LS 2008: 49 (in hvac jumper harness, 4.9 cm from hvac control assembly) j261 5 volt ref A/c req sig A/c request indicator A/c request sig A/c request switch Air temp dr cntrl Air temp dr pos Batt Bcm 3 fuse 30a Blower motor (under right side of dash) Blower motor resistor (under right side of dash, next to blower motor) Blower motor switch Body control module (bcm) (under center dash, on right side of center console) C2 x4 Close recir door Computer data lines system Defogger system Fresh air indicator G203 (behind right side of dash) Gnd Ground High Hot at all times Hot w/ run/ crank relay energized Hvac control module (center of dash, below radio) Hvac relay Hvac/ ip ign fuse 16 10a Hvac/pk3 + fuse 10 10a Ign 1 voltage Interior lights system Logic Low Mode door cntrl Mode door pos sig Mode switch Off Open recir door Pnk Power distribution system R defog relay cntrl R defog switch sig Recir- culation indicator Recir- culation switch Run/ crank relay control Serial data Tan Temperature control switch Underhood fuse block (in engine compt, next to left strut tower) 2.4L VIN B, Manual A/C Wiring Diagram (2 of 2) for Chevrolet Cobalt LS 2008 List of elements for 2.4L VIN B, Manual A/C Wiring Diagram (2 of 2) for Chevrolet Cobalt LS 2008: 36 5v ref A/c cltch fuse 10a A/c cltch relay A/c compressor clutch (left front of engine) A/c compressor clutch diode A/c refrigerant pressure sensor (right front of engine compt, on a/c line, near compressor) A11 A4 x5 Air temperature actuator (center of dash, left side of hvac module) Computer data lines system Cooling fan (front of engine compt, attached to radiator) Cooling fan 1 fuse 30a Cooling fan 1 relay Cooling fan 2 fuse 30a Cooling fan 2 relay E10 Ect sig Engine Engine control module (ecm) (left side of engine compt, in front of underhood fuse block) Engine coolant temperature (ect) sensor (rear, left side of engine, below exhaust) Engine cooling fan resistor (lower left radiator shroud) F10 F2 x3 G101 (in left side of engine compt, under coolant reservoir) G111 (front of engine compt, near cooling fans) Hot at all times Hot in run or start Low ref Mode actuator (center of dash, left side of hvac module) Pnk Press sens sig Recirculation actuator (right side of dash, above blower motor) Rly ctrl Serial data Tan Underhood fuse block (in engine compt, next to left strut tower)
ANTI-LOCK BRAKES Anti-lock Brakes Wiring Diagram, with VSC (1 of 2) for Chevrolet Cobalt LS 2008 List of elements for Anti-lock Brakes Wiring Diagram, with VSC (1 of 2) for Chevrolet Cobalt LS 2008: 47 (left side of engine compt, under coolant reservoir) g101 12 volt 12 volt ref 5 volt ref 5-volt Abs 2 fuse 10a Abs 3 fuse 20a Abs fuse 40a Bat positive volt Brake booster vacuum sen Brake pressure modulator valve Can bus high serial Can bus high serial data Can bus low serial Can bus low serial data Computer data lines system Electronic brake control module (ebcm) (left side of engine compt, near underhood fuse block) Ground Hi speed gmlan serial bus+ Hi speed gmlan serial bus- High serial can bus Hot at all times Hot in run or start Ign 1 volt Left front wheel speed sensor (wss) (inside left front wheel hub) Left rear wheel speed sensor (wss) (inside left rear wheel hub) Lf wheel speed ref Lf wheel speed sig Low ref Low serial can bus Lr wheel spd sen sig Lr wheel spd sens lo ref Pnk Pump motor Pump motor control Red Rf wheel speed sens lo ref Rf wheel speed sens sig Right front wheel speed sensor (wss) (inside right front wheel hub) Right rear wheel speed sensor (wss) (inside right rear wheel hub) Rr wheel spd sen ref Rr wheel speed sen sig Steering angle sensor Steering wheel position sen Tan Underhood fuse block (in engine compt, next to left strut tower) Yaw & lateral accelerometer sensor Anti-lock Brakes Wiring Diagram, with VSC (2 of 2) for Chevrolet Cobalt LS 2008 List of elements for Anti-lock Brakes Wiring Diagram, with VSC (2 of 2) for Chevrolet Cobalt LS 2008: 34 2.2l 2.4l Abs indicator Batt pos voltage Body control module (bcm) (under center dash, on right side of center console) Brake booster vacuum sensor Brake fluid level sensor signal Brake fluid level switch (in rear of engine compt, attached to master cylinder) Brake indicator Clstr fuse 10a Computer data lines system Data - hi spd gmlan serial Engine control module (ecm) (left side of engine compt, in front of underhood fuse block) G201 (behind left side of dash, near steering column) G301 (under driver's seat) Ground Hi spd gmlan ser data + Hi spd gmlan ser data - Hi spd gmlan serial data + Hot at all times Ign Instrument panel cluster Interior lights system Lo spd gmlan serial data x2 Logic Low spd gmlan ser data Park brake switch (in center console, attached to parking brake) Pnk Prake brake switch signal Serial data Tan Traction control switch Traction control switch signal Traction off ind Anti-lock Brakes Wiring Diagram, without VSC (1 of 2) for Chevrolet Cobalt LS 2008 List of elements for Anti-lock Brakes Wiring Diagram, without VSC (1 of 2) for Chevrolet Cobalt LS 2008: 29 Abs 2 fuse 10a Abs 3 fuse 20a Abs fuse 40a Bat positive volt Brake pressure modulator valve Computer data lines system Electronic brake control module (ebcm) (left side of engine compt, near underhood fuse block) G101 (left side of engine compt, under coolant reservoir) Hi speed gmlan serial bus+ Hi speed gmlan serial bus- Hot at all times Hot in run or start Ign 1 volt Left front wheel speed sensor (wss) (inside left front wheel hub) Lf wheel speed ref Lf wheel speed sig Lr wheel spd sen sig Lr wheel spd sens lo ref Pnk Pump motor Pump motor control Rf wheel speed sens lo ref Rf wheel speed sens sig Right front wheel speed sensor (wss) (inside right front wheel hub) Right rear wheel speed sensor (wss) (inside right rear wheel hub) Rr wheel spd sen ref Rr wheel speed sen sig Tan Underhood fuse block (in engine compt, next to left strut tower) Anti-lock Brakes Wiring Diagram, without VSC (2 of 2) for Chevrolet Cobalt LS 2008 List of elements for Anti-lock Brakes Wiring Diagram, without VSC (2 of 2) for Chevrolet Cobalt LS 2008: 32 2.2l 2.4l Abs indicator Batt pos voltage Body control module (bcm) (under center dash, on right side of center console) Brake fluid level sensor signal Brake fluid level switch (in rear of engine compt, attached to master cylinder) Brake indicator Clstr fuse 10a Computer data lines system Engine control module (ecm) (left side of engine compt, in front of underhood fuse block) G201 (behind left side of dash, near steering column) G301 (under driver's seat) Ground Hi spd gmlan ser data + Hi spd gmlan ser data - Hi spd gmlan serial data + Hi spd gmlan serial data - Hot at all times Ign Instrument panel cluster Left rear wheel speed sensor (wss) (inside left rear wheel hub) Lo spd gmlan serial data Logic Low spd gmlan ser data Park brake switch (in center console, attached to parking brake) Park brake switch signal Pnk Red Serial data Tan Traction off ind
ANTI-THEFT Anti-theft Wiring Diagram for Chevrolet Cobalt LS 2008 List of elements for Anti-theft Wiring Diagram for Chevrolet Cobalt LS 2008: 55 Acc Acc volt sig B3 x3 Batt pos volt Body control module (bcm) (under center dash, on right side of center console) Closed sw sig Clstr fuse 7 10a Computer data lines system Driver door jamb switch Engine control module (ecm) (left side of engine compt, in front of underhood fuse block) Exterior lights system G101 (left side of engine compt, under coolant reservoir) G201 (behind left side of dash, near steering column) G301 (under driver's seat) G401 (center of rear shelf, near left speaker) Gmlan serial data Gmlan serial data + Gmlan serial data - Ground Hazard sw sig Hood ajar switch (w/ keyless entry) (front of vehicle, part of hood latch) Horn relay ctrl Horns system Hot at all times Hvac/ pk3 + fuse 10 10a Ign key res sig Ignition switch Instrument panel cluster (ipc) Interior lights system J206 J330 (in body harness, near rear compt lid release actuator) Jamb sw sig Left rear door jamb switch Lf door jamb Logic Lr door jamb Off Off/run/crank Passenger door jamb switch Power distribution system Rear compartment lid release actuator (in latch assembly) Rear compt jamb Rf door jamb Right rear door jamb switch Rr door jamb Run Sdm fuse 10a Security ind Security indicator Serial data + Serial data - Start Tan Theft deterrent control module (in steering column, near ignition switch) Underhood fuse block (in engine compt, next to left strut tower)
BODY CONTROL MODULES Body Control Modules Wiring Diagram (1 of 4) for Chevrolet Cobalt LS 2008 List of elements for Body Control Modules Wiring Diagram (1 of 4) for Chevrolet Cobalt LS 2008: 56 (sedan) 5v ref A/t shift lk ctrl sol sply vol Ambient air temp sens sig Ambient air temperature sensor (right side of left headlight) Bat pos voltage Batt pos vol Body control module (bcm) (under center dash, on right side of center console) Brake fluid level sens sig Brake fluid level switch (in rear of engine compt, attached to master cylinder) Computer data lines system Current sensor sig Defogger system Door lock lock/unlock sig Door locks system Drl relay control Exterior lights system Fog lmp rly ctrl G301 (under driver's seat) G401 (center of rear shelf, near left speaker) Gnd Headlamp high beam rly ctrl Headlights system Hood ajar switch signal Hood closed switch signal Horn rly ctrl Horns system Hot at all times Int light fuse 27 10a Interior lights system J352 Left front turn sig lamp sply vol Lf door ajar sw sig Logic Low ref Low spd gmlan serial data Lr door ajar sw isg Park brake sw sig Park brake switch (in center console, attached to parking brake) Park lamp rly ctrl Pnk Power distribution system Rear compt lid ajar sw sig Rear defog rly ctrl Rf door ajar sw sig Right front turn sig lamp sply vol Rr door ajar sw sig Run/crank rly coil ctrl Shift interlock system Starting/charging system Tan Trunk release rly ctrl Trunk, tailgate, fuel doors system Windshield wiper mtr prk sw sig Windshield wiper sw on sig Wiper/washer system Body Control Modules Wiring Diagram (2 of 4) for Chevrolet Cobalt LS 2008 List of elements for Body Control Modules Wiring Diagram (2 of 4) for Chevrolet Cobalt LS 2008: 50 (not used) A10 A11 A12 Acc voltage B10 B11 B12 Bat pos voltage Battery positive voltage Bcm 2 fuse 40a Bcm 3 fuse 30a Body control module (bcm) (under center dash, on right side of center console) C10 C11 C12 Courtesy lamp ctrl Courtesy lamp sply voltage D10 D11 D12 Door lock actuator lock ctrl (sedan) Door lock actuator unlock ctrl Door lock actuator unlock ctrl (sedan) Door locks system Driver dr lock actuator unlock ctrl Engine controls system Exterior lights system Hot at all times I/p lamp sply voltage Ign 1 voltage Ign sw/ pk3+ fuse 8 2a Interior lights system Logic Park lamp sply voltage Pnk Power distribution system Power tops system Power windows system Rap fuse sply voltage Red Run/crank ign 1 voltage Seats system Sound systems Tan To bcm (diagram 3 of 4) Transmissions system Underhood fuse block (in engine compt, next to left strut tower) Windshield washer pmp ctrl Wiper/washer system Body Control Modules Wiring Diagram (3 of 4) for Chevrolet Cobalt LS 2008 List of elements for Body Control Modules Wiring Diagram (3 of 4) for Chevrolet Cobalt LS 2008: 44 (not used) A10 A11 A12 Acc voltage Air conditioning system Anti-theft system B10 B11 B12 Bat pos voltage Body control module (bcm) (under center dash, on right side of center console) C10 C11 C12 Cruise control system D10 D11 D12 Door locks system E10 E11 E12 Electronic power steering system Exterior lights system F10 F11 F12 From bcm a (diagram 2 of 4) G203 (behind right side of dash) Ground Ign 1 voltage Ign 3 vol Instrument cluster system Interior lights system Logic Park lamp sply voltage Pnk Power distribution system Run/crank voltage Sound systems Starting/charging system Windshield washer pump ctrl Wiper/washer system Body Control Modules Wiring Diagram (4 of 4) for Chevrolet Cobalt LS 2008 List of elements for Body Control Modules Wiring Diagram (4 of 4) for Chevrolet Cobalt LS 2008: 46 (not used) A/c request sig Air conditioning system Anti-theft system Body control module (bcm) (under center dash, on right side of center console) Computer data lines system Cruise control system Cruise ctrl sw sig Defogger system Drl ambient light sens low ref Drl ambient light sens sig Exterior lights system Flash to pass sig Fog lmp rly ctrl Front fog lamp sw sig Hazard switch sig Headlamp dimmer sw hi beam sig Headlamp sw headlamps off sig Headlamp sw headlamps on sig Headlamp sw sig Headlights system High speed gmlan ser data bus + High speed gmlan ser data bus - Horn rly ctrl Horns system I/p lamp dimmer sw sig Ignition key resistor signal Interior lights system Logic Low ref Low speed gmlan serial data Lr turn sig sw sig Off/run/crank voltage Park lamp sw on sig Passenger seatbelt reminder Power distribution system Rear compt lid release sw Rear defog rly ctrl Rear defog sw sig Rr turn sig sw sig Security ind sply voltage Stop lamp sply voltage Tan Trunk, tailgate, fuel doors system Windshield wiper switch signal Wiper/washer system
COMPUTER DATA LINES Computer Data Lines Wiring Diagram for Chevrolet Cobalt LS 2008 List of elements for Computer Data Lines Wiring Diagram for Chevrolet Cobalt LS 2008: 36 (behind left side of dash, near steering column) g201 (under dash, near base of steering column) electronic power steering (eps) control module 2.4l/2.2l w/ a/t 2.4l/2.2l w/ m/t Body control logic Data link connector (dlc) (lower left of dash, near hood release) Digital radio receiver (center rear shelf, under trim pad) Dlc fuse 15a Electronic brake control module (ebcm) (w/ abs) (left side of engine compt, near underhood fuse block) Engine control module (ecm) (2.2l/2.4l) (left side of engine compt, in front of underhood fuse block) G203 (behind right side of dash) High speed gmlan serial data bus + High speed gmlan serial data bus - Hot at all times If equipped Inflatable restraint sensing & diagnostic module (sdm) (under center console, behind parking brake) Instrument panel cluster (ipc) Jx200 (lower left of dash, below hood release) Low speed gm lan serial data Low speed gmlan serial data Module (bcm) (under center dash, on right side of center console) Radio Remote control door lock receiver (rcdlr) (under right dash trim panel, above passenger's inflator module) Serial data bus + high speed gmlan Serial data bus - high speed gmlan Tan Theft deterrent control module (in steering column, near ignition switch) Transmission control module (tcm) (left rear of engine compt, behind powertrain control module (pcm)/ecm) Underhood fuse block (in engine compt, next to left strut tower) Vehicle communication interface module (vcim) (under rear, shelf between speakers) W/ active brake W/ onstar W/ vsc W/o active brake W/o onstar W/o vsc
COOLING FAN
2.2L VIN F 2.2L VIN F, Cooling Fan Wiring Diagram for Chevrolet Cobalt LS 2008 List of elements for 2.2L VIN F, Cooling Fan Wiring Diagram for Chevrolet Cobalt LS 2008: 23 A1 x5 A11 Body control module (bcm) (under center dash, on right side of center console) Computer data lines system Cooling fan 1 fuse 30a Cooling fan 1 relay Cooling fan 2 fuse 30a Cooling fan 2 relay Coolnt sw E10 Ect sig Engine control module (ecm) (left side of engine compt, in front of underhood fuse block) Engine coolant temperature (ect) sensor (rear of engine, near exhaust manifold) Engine cooling fan (front of engine compt, attached to radiator) F10 G111 (front of engine compt, near cooling fans) G301 (under driver's seat) Hot at all times Low ref Rly ctrl Serial data Tan Underhood fuse block (in engine compt, next to left strut tower)
2.4L VIN B 2.4L VIN B, Cooling Fan Wiring Diagram for Chevrolet Cobalt LS 2008 List of elements for 2.4L VIN B, Cooling Fan Wiring Diagram for Chevrolet Cobalt LS 2008: 23 A11 Body control module (bcm) (under center dash, on right side of center console) Computer data lines system Cooling fan 1 fuse 30a Cooling fan 1 relay Cooling fan 2 fuse 30a Cooling fan 2 relay Coolnt sw E10 Ect sig Engine control module (ecm) (left side of engine compt, in front of underhood fuse block) Engine coolant temperature (ect) sensor (rear, left side of engine, below exhaust) Engine cooling fan (front of engine compt, attached to radiator) Engine cooling fan resistor (lower left radiator shroud) F10 G111 (front of engine compt, near cooling fans) G301 (under driver's seat) Hot at all times Low ref Rly ctrl Serial data Tan Underhood fuse block (in engine compt, next to left strut tower)
CRUISE CONTROL Cruise Control Wiring Diagram, A/T for Chevrolet Cobalt LS 2008 List of elements for Cruise Control Wiring Diagram, A/T for Chevrolet Cobalt LS 2008: 39 5 volt ref 5v ref 2 Acc volts Accelerator pedal position (app) sensor (near accelerator pedal bracket) App sens 1 sig App sens 2 sig Automatic transmission B5 x3 Body control module (bcm) (under center dash, on right side of center console) Computer data lines system Cruise control on ind Cruise ctrl sw sig Data bus + Data bus - Engine control module (ecm) (left side of engine compartment, in front of underhood fuse block) Eps/ str whl cntrl fuse 19 2a G105 (lower left front of transmission case) G201 (behind left side of dash, near steering column) Gnd Hot w/ run/crank relay energized Inflatable restraint steering wheel module coil (on steering column, behind steering wheel) J208 Left steering wheel control switch Logic Low ref Pnk Power distribution system Res + Set - Tac mtr ctrl 1 Tac mtr ctrl 2 Tan Throttle actuator control (tac) module (top of intake manifold) Tp sens 1 sig Tp sens 2 sig Transmission control module (tcm) (left rear of engine compt, behind powertrain control module (pcm)/ecm) Vehicle speed sensor (vss) Vss high sig Vss low sig Cruise Control Wiring Diagram, M/T for Chevrolet Cobalt LS 2008 List of elements for Cruise Control Wiring Diagram, M/T for Chevrolet Cobalt LS 2008: 40 5 volt ref 5v ref 2 Accelerator pedal position (app) sensor (near accelerator pedal bracket) App sens 1 sig App sens 2 sig Body control module (bcm) (under center dash, on right side of center console) Clutch pedal position (cpp) sensor (under left side of dash, at top of clutch pedal) Computer data lines system Cpp sig sens Cpp sw sig Cruise control on ind Cruise ctrl sw sig Data bus + Data bus - Engine control module (ecm) (left side of engine compartment, in front of underhood fuse block) Eps/ str whl cntrl fuse 19 2a G105 (lower left front of transmission case) G201 (behind left side of dash, near steering column) Gnd Hot w/ run/crank relay energized Ign Inflatable restraint steering wheel module coil (on steering column, behind steering wheel) J208 Left steering wheel control switch Logic Low ref Pnk Power distribution system Res+ Set- Tac mtr ctrl 1 Tac mtr ctrl 2 Tan Throttle actuator control (tac) module (top of intake manifold) Tp sens 1 sig Tp sens 2 sig Vehicle speed sensor (vss) (top of manual transmission) Vss high sig Vss low sig X3 b5
DEFOGGERS Defoggers Wiring Diagram for Chevrolet Cobalt LS 2008 List of elements for Defoggers Wiring Diagram for Chevrolet Cobalt LS 2008: 19 Body control module (bcm) (under center dash, on right side of center console) Defog switch Defogger indicator G101 (left side of engine compt, under coolant reservoir) G203 (behind right side of dash) G402 (center of rear shelf, near speaker) Hot at all times Hvac control module (center of dash, below radio) Logic Rear defog fuse 40a Rear defog relay Rear defog rly ctrl Rear defog sw sig Rear window defogger grid Underhood fuse block (in engine compt, next to left strut tower) X2 a X2 e1 X2 f1 X3 b2
ELECTRONIC POWER STEERING Electronic Power Steering Wiring Diagram for Chevrolet Cobalt LS 2008 List of elements for Electronic Power Steering Wiring Diagram for Chevrolet Cobalt LS 2008: 23 - x3 B(+) Body control module (bcm) (under center dash, on right side of center console) Class 2 serial data Computer data lines system Cruise control system Electric power steering (eps) motor Eps fuse 60a Eps/ str whl cntrl fuse 19 2a G109 (rear of engine compt, on left strut tower) Ground Hot at all times Hot in run or start Ignition 1 Logic Pnk Power steering control module (pscm) Red Steering column assembly Steering shaft torque sensor Tan Tan/ Underhood fuse block (in engine compt, next to left strut tower)
ENGINE PERFORMANCE
2.2L VIN F 2.2L VIN F, Engine Performance Wiring Diagram (1 of 4) for Chevrolet Cobalt LS 2008 List of elements for 2.2L VIN F, Engine Performance Wiring Diagram (1 of 4) for Chevrolet Cobalt LS 2008: 58 (left side of engine compt, under coolant reservoir) g101 5v ref 1 5v ref 2 A/c com rly ctrl A/c ref sens sig Acc Acc vol Acc volt Air conditioning system Air pump rly ctrl App sens 1 sig App sens 2 sig Batt pos vol Body control module (bcm) (under center dash, on right side of center console) Clutch pedal position (cpp) sensor (m/t) Computer data lines system Cooling fan rly ctrl Cooling fans system Cpp sens sig Ecm/ tcm fuse 25 10a Ecm/ trans fuse 15a Engine control module (ecm) (left side of engine compt, in front of underhood fuse block) Evaporative emission (evap) canister vent solenoid valve (under rear of vehicle, behind fuel tank attached to evap canister) Exterior lights system Fuel level sens sig Fuel pmp rly ctrl Fuel tank pressure (ftp) sensor (top of fuel tank) Ground Hi spd cool fan rly Hot at all times Iat sens sig Ign 1 voltage Ignition 1 vol Ignition switch J206 Logic Low ref Maf sens sig Mil ctrl Off Powertrain rly ctrl Press sens sig Relay coil ctrl x1 Run Run/ crank relay Serial bus + Serial bus - Start Starter ctrl Starting/charging system Stop lamp sw sig Tan Transmissions system Underhood fuse block (in engine compt, next to left strut tower) Vehicle speed sensor (vss) (m/t) (top of manual transmission) Vent sol ctrl Vss high sig Vss low sig 2.2L VIN F, Engine Performance Wiring Diagram (2 of 4) for Chevrolet Cobalt LS 2008 List of elements for 2.2L VIN F, Engine Performance Wiring Diagram (2 of 4) for Chevrolet Cobalt LS 2008: 28 (front of engine compt, near cooling fans) g111 (lower left front of transmission case) g105 (near accelerator pedal bracket) accelerator pedal position (app) sensor Air pump fuse 40a Air pump relay (w/ pzev) Air sol fuse 10a Air sol relay (w/ pzev) B11 Cnstr vent fuse 10a Computer data lines system Data gmlan Evaporative emission (evap) canister purge solenoid (top rear of engine) Exh fuse 10a Hot at all times Ign Inj fuse 15a Instrument panel cluster (ipc) Logic Malfunc- tion indicator lamp Nca Pcm/ecm fuse 15a Pnk Pwr/trn relay Secondary air injection (air) pump (lower left side of engine, near oil pan) Secondary air injection reaction (air) solenoid (top, right side of engine, near exhaust manifold) Tan Underhood fuse block (in engine compt, next to left strut tower) Up shift ind 2.2L VIN F, Engine Performance Wiring Diagram (3 of 4) for Chevrolet Cobalt LS 2008 List of elements for 2.2L VIN F, Engine Performance Wiring Diagram (3 of 4) for Chevrolet Cobalt LS 2008: 27 (center of rear shelf, near speaker) g402 (lower left front of transmission case) g105 (top, left side of engine, under fuel rail assembly) fuel injectors Fuel level sensor Fuel pump & sender assembly (inside fuel tank) Fuel pump fuse 15a Fuel pump motor Fuel pump relay G101 (left side of engine compt, under coolant reservoir) G107 (upper front, right side of engine, near exhaust) Gnd Hot at all times Iat Ic 1 ctrl Ic 2 ctrl Ign 1 vol Ignition coil/ module 1 (top of engine, under cover at cylinder 1) Ignition coil/ module 2 (top of engine, under cover at cylinder 2) J103 (in fuel injectors harness, top, left side of engine) J106 Low ref Maf Manifold absolute pressure (map) sensor (top front of engine at cylinder 3 intake port runner) Mass air flow (maf)/inlet air temperature (iat) sensor (on intake, after air cleaner) Pnk Tan Underhood fuse block (in engine compt, next to left strut tower) 2.2L VIN F, Engine Performance Wiring Diagram (4 of 4) for Chevrolet Cobalt LS 2008 List of elements for 2.2L VIN F, Engine Performance Wiring Diagram (4 of 4) for Chevrolet Cobalt LS 2008: 53 (in cooling fan jumper harness, 15 cm from cooling fan motor) (rear of engine compt, in exhaust manifold) heated oxygen sensor (ho2s) 1 (rear of engine compt, in exhaust, after catalytic converter) heated oxygen sensor (ho2s) 2 (top left side of engine) throttle actuator control (tac) module 5v ref 5v ref 1 5v ref 2 A/c refrigerant pressure sensor (right front of engine compt, on a/c line, near compressor) Air sol ctrl Air sol sig Camshaft position (cmp) sensor Ckp sens sig Cmp sens sig Crankshaft position (ckp) sensor (lower left rear of engine) Ect sens sig Engine control module (ecm) (left side of engine compt, in front of underhood fuse block) Engine coolant temperature (ect) sensor (rear of engine, near exhaust manifold) Engine oil pressure (eop) switch (lower left rear of engine) Fuel inj 1 ctrl Fuel inj 2 ctrl Fuel inj 3 ctrl Fuel inj 4 ctrl G105 (lower left front of transmission case) Gen field duty Gen trn on sig Gnd Hi sig sens 1 Hi sig sens 2 Ic 1 ctrl Ic 2 ctrl Ic 3 ctrl Ic 4 ctrl Ign 1 vol Ignition coil/ module 3 (top of engine, under cover at cylinder 3) Ignition coil/ module 4 (top of engine, under cover at cylinder 4) J105 Knock sensor (ks) (lower left side of engine) Ks sig Loc cont sig 1 Low ref Low sens 2 Low sig sens 1 Low sig sens 2 Map sens sig Nca Oil pres sw sig Purg sol ctrl Starting/charging system Tac mtr ctrl 1 Tac mtr ctrl 2 Tan Tp sens 1 sig Tp sens 2 sig
2.4L VIN B 2.4L VIN B, Engine Performance Wiring Diagram (1 of 4) for Chevrolet Cobalt LS 2008 List of elements for 2.4L VIN B, Engine Performance Wiring Diagram (1 of 4) for Chevrolet Cobalt LS 2008: 54 (left side of engine compt, under coolant reservoir) g101 5v ref 1 5v ref 2 A/c com rly ctrl A/c ref sens sig Acc Acc vol Acc volt Air conditioning system App sens 1 sig App sens 2 sig Batt pos vol Body control module (bcm) (under center dash, on right side of center console) Clutch pedal position (cpp) sensor (m/t) Computer data lines system Cooling fan rly ctrl Cooling fans system Cpp sens sig Ecm/ tcm fuse 25 10a Ecm/ trans fuse 15a Engine control module (ecm) (left side of engine compt, in front of underhood fuse block) Evaporative emission (evap) canister vent solenoid valve (under rear of vehicle, behind fuel tank attached to evap canister) Exterior lights system Fuel level sens sig Fuel pmp rly ctrl Fuel tank pressure (ftp) sensor (top of fuel tank) Ground Hi spd cool fan rly Hot at all times Iat sens sig Ign 1 voltage Ignition 1 vol Ignition switch J206 Logic Low ref Maf sens sig Mil ctrl Off Powertrain rly ctrl Press sens sig Relay coil ctrl Run Run/ crank relay Serial bus + Serial bus - Start Starter ctrl Starting/charging system Stop lamp sw sig Tan Transmissions system Underhood fuse block (in engine compt, next to left strut tower) Vent sol ctrl 2.4L VIN B, Engine Performance Wiring Diagram (2 of 4) for Chevrolet Cobalt LS 2008 List of elements for 2.4L VIN B, Engine Performance Wiring Diagram (2 of 4) for Chevrolet Cobalt LS 2008: 18 (near accelerator pedal bracket) accelerator pedal position (app) sensor Cnstr vent fuse 10a Computer data lines system Data gmlan Evaporative emission (evap) canister purge solenoid valve (top, rear of engine) Exh fuse 10a Hot at all times Ign Inj fuse 15a Instrument panel cluster (ipc) Logic Malfunc- tion indicator lamp Pcm/ecm fuse 15a Pnk Pwr/trn relay Tan Underhood fuse block (in engine compt, next to left strut tower) Up shift ind 2.4L VIN B, Engine Performance Wiring Diagram (3 of 4) for Chevrolet Cobalt LS 2008 List of elements for 2.4L VIN B, Engine Performance Wiring Diagram (3 of 4) for Chevrolet Cobalt LS 2008: 26 (center of rear shelf, near speaker) g402 (in the ignition coil harness) j141 (lower left front of transmission case) g105 (top of engine, between camshaft covers) intake camshaft position (cmp) actuator solenoid (top, left side of engine, under fuel rail assembly) fuel injectors (upper front, right side of engine, near camshaft cover) exhaust camshaft position (cmp) sensor Fuel level sensor Fuel pump & sender assembly (inside fuel tank) Fuel pump fuse 15a Fuel pump motor Fuel pump relay G101 (left side of engine compt, under coolant reservoir) G107 (upper front, right side of engine, near exhaust) Hot at all times Iat Ignition coil/module 1 (top of engine, under cover at cylinder 1) Ignition coil/module 2 (top of engine, under cover at cylinder 2) J103 Maf Manifold absolute pressure (map) sensor (top front of engine at cylinder 3 intake port runner) Mass air flow (maf)/inlet air temperature (iat) sensor (on intake, after air cleaner) Nca Pnk Spark plug Tan Underhood fuse block (in engine compt, next to left strut tower) 2.4L VIN B, Engine Performance Wiring Diagram (4 of 4) for Chevrolet Cobalt LS 2008 List of elements for 2.4L VIN B, Engine Performance Wiring Diagram (4 of 4) for Chevrolet Cobalt LS 2008: 53 (rear of engine compt, in exhaust manifold) heated oxygen sensor (ho2s) 1 (rear of engine compt, in exhaust, after catalytic converter) heated oxygen sensor (ho2s) 2 (right front of engine compt, on a/c line, near compressor) (manual a/c) a/c refrigerant pressure sensor (top of engine, between camshaft covers) exhaust camshaft position (cmp) actuator solenoid (top of intake manifold) throttle actuator control (tac) module 5v ref 1 5v ref 2 Cam sol ctrl Ckp sens sig Cmp sens sig Cmp sens sig 2 Crankshaft position (ckp) sensor (above starter motor) Ect sens sig Engine control module (ecm) (left side of engine compt, in front of underhood fuse block) Engine coolant temperature (ect) sensor (rear, left side of engine, below exhaust) Engine oil pressure (eop) switch (left side of engine, above starter) Exhaust sol 1 Fuel inj 1 ctrl Fuel inj 2 ctrl Fuel inj 3 ctrl Fuel inj 4 ctrl G105 (lower left front of transmission case) Gen field duty Gen trn on sig Gnd Hi sig sens 1 Hi sig sens 2 Ic 1 ctrl Ic 2 ctrl Ic 3 ctrl Ic 4 ctrl Ignition coil/module 3 (top of engine, under cover at cylinder 3) Ignition coil/module 4 (top of engine, under cover at cylinder 4) Intake camshaft position (cmp) sensor (upper rear, left side of engine, near camshaft cover) J140 Knock sensor (ks) (lower left side of engine) Ks sig Low cont sig 1 Low ref Low sens 2 Low sig sens 1 Low sig sens 2 Map sens sig Nca Oil pres sw sig Purg sol ctrl Spark plug Starting/charging system Tac mtr ctrl 1 Tac mtr ctrl 2 Tan Tp sens 1 sig Tp sens 2 sig
EXTERIOR LIGHTS Backup Lamps Wiring Diagram for Chevrolet Cobalt LS 2008 List of elements for Backup Lamps Wiring Diagram for Chevrolet Cobalt LS 2008: 16 A/t Backup lamp switch (side of transaxle case) Bckup fuse 10a Coupe G401 (center of rear shelf, near left speaker) G402 (center of rear shelf, near speaker) Hot in run or start Inside rearview mirror Left backup lamp M/t Park/ neutral position (pnp) switch (rear of engine, on top of transmission) Pnk Right backup lamp Sedan Underhood fuse block (in engine compt, next to left strut tower) W/ onstar Exterior Lamps Wiring Diagram (1 of 2) for Chevrolet Cobalt LS 2008 List of elements for Exterior Lamps Wiring Diagram (1 of 2) for Chevrolet Cobalt LS 2008: 64 5v ref A12 Ambient light sensor (dash trim pad, near windshield on driver's side) Auto Body control module (bcm) (under center dash, on right side of center console) Bpp sens sig Brake pedal position sensor Center high mounted stop lamp (chmsl) Chmsl fuse 10a Chmsl relay Chmsl sply volt Computer data lines system Drl ambient light sens low ref Drl ambient light sens sig F5 x5 G101 (left side of engine compt, under coolant reservoir) G102 (left front of engine compt, on crossbar at washer reservoir fill cap) G201 (behind left side of dash, near steering column) G301 (under driver's seat) G401 (center of rear shelf, near left speaker) Ground Hazard sw sig Hazard switch Head Headlamp switch High speed gmlan serial data bus + High speed gmlan serial data bus - Hot at all times Instrument panel cluster (ipc) Interior lights system J352 Jx200 (lower left of dash, below hood release) Left Left front marker lamp Left park/turn signal lamp Left rear stop/turn Left turn sig lamp Left turn sig sw sig Left turn signal ind Logic Low ref Low speed gmlan serial data Off Park Park lamp rly ctrl Park lamp sply volt Park lamp sw sig Prk lamp fuse 10a Prk lamp pcb relay Right Right front marker lamp Right park/turn signal lamp Right rear stop/turn Right turn sig lamp Right turn sig sw sig Right turn signal ind Tan Turn signal/ multi- function switch Turn switch Underhood fuse block (in engine compt, next to left strut tower) X1 b5 X2 b7 X2 e9 X5 c2 Exterior Lamps Wiring Diagram (2 of 2) for Chevrolet Cobalt LS 2008 List of elements for Exterior Lamps Wiring Diagram (2 of 2) for Chevrolet Cobalt LS 2008: 15 (in body harness, 3.75 cm from g301) j361 Coupe Engine control module (ecm) (left side of engine compt, in front of underhood fuse block) G401 (center of rear shelf, near left speaker) G402 (center of rear shelf, near speaker) Left backup lamp Left rear marker lamp Left tail/ stop & turn signal lamp License lamp Right backup lamp Right rear marker lamp Right tail/ stop & turn signal lamp Sedan Stop lamp sw sig Transmission control module (tcm) (left rear of engine compt, behind powertrain control module (pcm)/ecm)
GROUND DISTRIBUTION Ground Distribution Wiring Diagram (1 of 2) for Chevrolet Cobalt LS 2008 List of elements for Ground Distribution Wiring Diagram (1 of 2) for Chevrolet Cobalt LS 2008: 81 (2.2l, w/ pzev) secondary air injection (air) pump solenoid (a/t) park/neutral position (pnp) switch (a/t) transmission control module (tcm) (if equipped) cigar lighter (if equipped) fog lamp switch (in engine compartment, next to left strut tower) underhood fuse block (w/ abs) (w/ accessory steering wheel control) right steering wheel control switch (w/ active brake) (w/ active brake) traction control switch (w/ enhanced audio speaker) audio amplifier (w/ keyless entry) hood ajar switch (w/o accessory steering wheel control) left steering wheel control switch 2.2l, w/ sulev A/c compressor clutch diode A5 x2 Air pump relay B x2 B x3 Body control module (bcm) Cool fans relay Crnk relay Data link connector (dlc) Door lock pcb relay Door unlock pcb relay Dr door unlock pcb relay Driver heated seat switch E12 Electronic brake control module (ebcm) Engine control module (ecm) Engine cooling fan Fog lamp pcb relay Fuel pmp relay G101 (left side of engine compt, under coolant reservoir) G103 (left front of engine compt, under left headlamp) G105 (lower left front of transmission case) G107 (upper front, right side of engine, near exhaust) G111 (front of engine compt, near cooling fans) G201 (behind left side of dash, near steering column) G203 (behind right side of dash) G306 (under center console, near sensing & diagnostic module (sdm)) Hazard switch Horn Horn switch Hvac control module Ignition coil/ module 1 Ignition coil/ module 2 Ignition coil/ module 3 Ignition coil/ module 4 Inflatable restraint passenger air bag on/off indicator Inflatable restraint sensing & diagnostic module (sdm) Inflatable restraint steering wheel module coil Instrument panel cluster (ipc) J208 K x1 K x2 Left front fog lamp Left front marker lamp Left headlamp Left park/turn signal lamp Mass air flow (maf)/ intake air tempe- rature (iat) sensor Nca Passenger heated seat switch Radio Rear compartment lid release switch Rear defog relay Remote control door lock receiver (rcdlr) Run/ crnk relay Secondary air injection (air) pump Theft deterrent module (tdm) Turn signal/ multi-function switch Underhood fuse block (in engine compt, next to left strut tower) W/ front heated seats Windshield washer fluid pump Windshield wiper motor Wiper hi/lo relay Wiper on/off relay X1 b12 X2 a X2 a6 X3 b2 Ground Distribution Wiring Diagram (2 of 2) for Chevrolet Cobalt LS 2008 List of elements for Ground Distribution Wiring Diagram (2 of 2) for Chevrolet Cobalt LS 2008: 76 (coupe) f (coupe) left backup lamp (coupe) left rear marker lamp (coupe) left tail/stop lamp (coupe) license lamp (coupe) right backup lamp (coupe) right rear marker lamp (coupe) right tail/stop lamp (sedan) b (sedan) left rear door jamb switch (sedan) right rear door jamb switch (w/ digital radio) digital radio receiver (w/ onstar) (w/ onstar) vehicle communication interface module (w/o onstar) A x2 Automatic transmission shift lock control solenoid Auxiliary power outlet B x2 Battery Battery current sensor Body control module (bcm) Brake fluid level switch C x1 C2 x5 Center high mounted stop lamp (chmsl) Chmsl relay Dome lamp Driver back heated seat element Driver cushion heated seat element Driver door jamb switch Driver door lock switch Driver heated seat control module Driver window switch Fuel pump & sender assembly G102 (left front of engine compt, on crossbar at washer reservoir fill cap) G109 (rear of engine compt, on left strut tower) G301 (under driver's seat) G401 (center of rear shelf, near left speaker) G402 (center of rear shelf, near speaker) G403 (rear compt, near battery current sensor) Inflatable restraint front passenger presence system (pps) module Inside rearview mirror J200 (coupe: in left front door harness, 5.95 cm from left front door lock switch) (sedan: in left front door harness, 7.85 cm from left front door lock switch) J301 (in driver seat harness, under driver seat) J352 J401 (in body harness, 14 cm from g401) Left backup lamp Left rear marker lamp Left tail/stop & turn signal lamp Outside rearview mirror switch Passenger back heated seat element Passenger cushion heated seat element Passenger door jamb switch Passenger door lock switch Passenger heated seat module Passenger window switch Power steering control module (pscm) Rear compartment lid release actuator Rear window defogger grid Right backup lamp Right front fog lamp Right front marker lamp Right headlamp Right park/turn signal lamp Right rear marker lamp Right tail/stop & turn signal lamp Sedan Sunroof motor Sunroof switch Underhood fuse block (in engine compt, next to left strut tower) W/ front heated seats W/ power sliding sunroof glass W/ power windows & remote outside mirrors W/o power sliding sunroof glass W/o power windows & remote outside mirrors
HEADLIGHTS Headlights Wiring Diagram for Chevrolet Cobalt LS 2008 List of elements for Headlights Wiring Diagram for Chevrolet Cobalt LS 2008: 54 Ambient light sensor (dash trim pad, near windshield on driver's side) Auto Body control module (bcm) (under center dash, on right side of center console) Computer data lines system Drl fuse 10a Drl pcb relay Drl rly ctrl Fog lamp fuse 15a Fog lamp ind Fog lamp pcb relay Fog lamp switch Fog lmp rly ctrl Fog lmp sw sig Ftp Ftp sw sig G101 (left side of engine compt, under coolant reservoir) G102 (left front of engine compt, on crossbar at washer reservoir fill cap) G201 (behind left side of dash, near steering column) Hdlmps off Hdlmps on Head Headlamp sw sig Hi beam pcb relay Hi beam rly ctrl High High beam High beam ind High beam signal Hot at all times Ign Instrument panel cluster (ipc) Interior lights system Left front fog lamp Left headlamp Lo beam pcb relay Logic Low Low beam Lt hi beam fuse 10a Lt lo beam fuse 10a Lt sen low ref Lt sen sig Off Park Park brake sw sig Park brake switch (in center console, attached to parking brake) Pnk Right front fog lamp Right headlamp Rt hi beam fuse 10a Rt lo beam fuse 10a Serial data Turn signal/ multi-function switch Underhood fuse block (in engine compt, next to left strut tower)
HORN Horn Wiring Diagram for Chevrolet Cobalt LS 2008 List of elements for Horn Wiring Diagram for Chevrolet Cobalt LS 2008: 17 (behind left side of dash, near steering column) g201 B6 x2 Body control module (bcm) (under center dash, on right side of center console) E3 x3 G101 (left side of engine compartment, under coolant reservoir) Horn (above left fog lamp) Horn fuse 10a Horn pcb relay Horn rly ctrl Horn switch Hot at all times Inflatable restraint steering wheel module coil (on steering column, behind steering wheel) J208 Logic Nca Tan Underhood fuse block (in engine compt, next to left strut tower)
INSTRUMENT CLUSTER Instrument Cluster Wiring Diagram for Chevrolet Cobalt LS 2008 List of elements for Instrument Cluster Wiring Diagram for Chevrolet Cobalt LS 2008: 71 (center of left "b" pillar between hinges) (sedan) left rear door ajar switch (center of right "b" pillar between hinges) (sedan) right rear door ajar switch (lower left "a" pillar between door hinges) driver door ajar switch (lower right "a" pillar between door hinges) front passenger door ajar switch (under driver's seat) g301 Abs ind Air bag ind Anti-theft system Bat Body control module (bcm) (under center dash, on right side of center console) Brake fluid level switch (in rear of engine compt, attached to master cylinder) Brake fluid lvl Brake ind C1 x4 Charging ind Clstr fuse 7 10a Computer data lines system Cruise control system Dic sw sig Driver information center (dic) Engine control module (ecm) (left side of engine compt, in front of underhood fuse block) Engine controls system Engine coolant temperature ind Engine oil pressure (eop) switch (2.2l lower left rear of engine) (2.4l: left side of engine, above starter) Front fog lamp ind Fuel level Fuel lvl sens sig Fuel pump & sender assembly (inside fuel tank) G201 (behind left side of dash, near steering column) G203 (behind right side of dash) G301 (under driver's seat) Gmlan ser data Gmlan ser data+ Gmlan ser data- Gnd High beam ind Hot at all times Hot w/ run/crnk relay energized Hvac/ ip ign fuse 16 10a Ign Ign 1 volt Instrument panel cluster (ipc) Interior lights system Left turn ind Lf dr ajar sw Logic Low ref Lr dr ajar sw Malfunction ind Mil ctrl Oil level ind Oil pres sw sig Park brake sw Park brake switch (in center console, attached to parking brake) Pnk Power distribution system Rf dr ajar sw Right turn ind Rr dr ajar sw Seat belt ind Security ind Security ind sply volt Serial data Speedometer Tachometer Tan Traction off ind Trip reset Trip/ odometer Up-shift ind Vf display trip
INTERIOR LIGHTS Courtesy Lamps Wiring Diagram for Chevrolet Cobalt LS 2008 List of elements for Courtesy Lamps Wiring Diagram for Chevrolet Cobalt LS 2008: 31 A10 Battery+ Body control module (bcm) (under center dash, on right side of center console) Compartment lid release actuator) Ctsy lps ctrl Diode Dome lamp Door Driver door ajar switch (lower left "a" pillar between door hinges) Driver's seat) Front passenger door ajar switch (lower right "a" pillar between door hinges) G301 (under G401 (center of rear shelf, near left speaker) Ground Hot at all times Inside rearview mirror Int light fuse 27 10a J401 Left rear door ajar switch (sedan) (center of left "b" pillar between hinges) Lf door ajar Logic Lr door ajar Off Rear compartment courtesy lamp Rear compartment lid release actuator (in latch assembly) Rear compt ajar Rf door ajar Right rear door ajar switch (sedan) (center of right "b" pillar between hinges) Rr door ajar W/ onstar W/o onstar Instrument Illumination Wiring Diagram for Chevrolet Cobalt LS 2008 List of elements for Instrument Illumination Wiring Diagram for Chevrolet Cobalt LS 2008: 58 (coupe) (sedan) (under driver's seat) g301 A/t shift lock control solenoid (a/t) (at gear selector) B12 Battery+ Body control module (bcm) (under center dash, on right side of center console) C11 C12 Dimmer low ref Dimmer sig Driver door lock switch Driver heated seat switch (w/ front heated seats) Driver window switch Exterior lights system F x1 Fog lamp switch (deluxe fog lamp) G201 (behind left side of dash, near steering column) G203 (behind right side of dash) G301 (under driver's seat) Ground Hazard switch Head Hot at all times Hvac control module (center of dash, below radio) I/p dimmer switch Inflatable restraint steering wheel module coil (on steering column, behind steering wheel) Instrument panel cluster (ipc) Int light fuse 27 10a J200 J208 J361 (in body harness, 3.75 cm from g301) Left steering wheel control switch Logic Off Outside rearview mirror switch Park auto Park lamp pcb relay Passenger door lock switch Passenger heated seat switch (w/ front heated seats) Passenger window switch Pk lmp rly ctrl Pk lmp sw sig Prk lamp fuse 10a Right steering wheel control switch Shift lock control solenoid) Swc bklt fuse 28 2a Traction control switch Turn signal/ multi-function switch Underhood fuse block (in engine compt, next to left strut tower) W/ active brake W/ power windows & remote outside mirrors W/o power windows & remote outside mirrors X2 a2 X2 b X2 b7 X3 b X5 d1
POWER DISTRIBUTION Power Distribution Wiring Diagram (1 of 3) for Chevrolet Cobalt LS 2008 List of elements for Power Distribution Wiring Diagram (1 of 3) for Chevrolet Cobalt LS 2008: 77 (in engine compt, next to left strut tower) underhood fuse block + x1 50a A/t Abs 2 fuse 10a Abs 3 fuse 20a Abs fuse 40a Auxiliary power outlet Back up fuse 10a Back up lamp switch Bat (+) Battery Bcm2 fuse 40a Bcm3 fuse 30a Body control module (bcm) (under center dash, on right side of center console) Chmsl fuse 10a Chmsl relay Cigar lighter Cnstr vent fuse 10a Cooling fan 1 fuse 30a Cooling fan 1 relay Cooling fan 2 fuse 30a Cooling fan 2 relay Crank fuse 30a Crank relay D10 x3 Data link connector (dlc) Dlc fuse 15a E6 (not used) Ecm/ trans fuse 15a Electronic brake control module (ebcm) Engine control module (ecm) Eps fuse 60a Evaporative emission (evap) canister vent solenoid valve Fusible link G101 (left side of engine compartment, under coolant reservoir) G203 (behind right side of dash) G301 (under driver's seat) Generator Hvac relay If equipped Inflatable restraint sensing & diagnostic module (sdm) Inline fuse Ip ign fuse 20a Mir/ ugdo fuse 5a Outlet fuse 20a Outside rearview mirror switch Pnk Power steering control module (pscm) Rear defog fuse 40a Rear defog relay Red Run/ crank relay Run/ crank relay coil ctrl Sdm fuse 10a Starter To body control module (diagram 2 of 3) To body control module (diagram 3 of 3) To power- train relay (diagram 2 of 3) Transmission control module (tcm) W/ active brake W/o active brake Wiper fuse 25a Wpr lo/hi relay Wpr on/off relay X1 f5 X3 b2 X3 c5 X4 b1 X4 c2 X5 a2 X5 a5 X5 b2 X5 b3 X5 d5 X5 e5 X6 a Power Distribution Wiring Diagram (2 of 3) for Chevrolet Cobalt LS 2008 List of elements for Power Distribution Wiring Diagram (2 of 3) for Chevrolet Cobalt LS 2008: 83 (coupe) (sedan) (in engine compt, next to left strut tower) underhood fuse block (in fuel injectors harness, top, pnk (in the ignition coil harness) j141 (not used) (under center dash, on right side of center console) body control module (bcm) A/c clutch relay A2 x1 Air pump fuse 40a Air pump relay Air sol relay (2.2l/sulev) C11 D1 x3 D10 Digital radio receiver (if equipped) Door lock fuse 15a Door lock pcb relay Door unlock pcb relay Dr door unlock pcb relay Driver heated seat control module Driver window switch Drl pcb relay E x2 E10 (not used) E3 x5 E4 x5 Ecm/ tcm fuse 10a Engine control module (ecm) Evaporative emission (evap) canister purge solenoid valve Exh fuse 10a Fog lamp pcb relay From bcm3 fuse c (diagram 1 of 3) From inj fuse (diagram 2 of 3) From inline fuse (diagram 1 of 3) Fuel injector 1 Fuel injector 2 Fuel injector 3 Fuel injector 4 Fuel pump relay Heated oxygen sensor (ho2s) 1 Heated oxygen sensor (ho2s) 2 High beam pcb relay Horn pcb relay Ignition coil/ module 1 Ignition coil/ module 2 Ignition coil/ module 3 Ignition coil/ module 4 Inj fuse 15a Int light fuse 10a Interior light pcb relay Left side of engine) j103 Logic Low beam pcb relay M/t Mass air flow (maf)/ intake air temperature (iat) sensor Passenger heated seat control module Passenger window switch Pcm/ecm fuse 15a Pnk Power window fuse 30a Powertrain relay Prk lamp pcb relay Radio Radio fuse 15a Rap relay Remote control door lock receiver (rcdlr) Rly ctrl Sunroof fuse 15a Sunroof switch To splice j103 (diagram 2 of 3) To splice j141 (diagram 2 of 3) Transmission control module (tcm) Trunk pcb relay Trunk/htd seats fuse 20a Underhood fuse block (in engine compt, next to left strut tower) Vehicle communication interface module (vcim) (if equipped) W/ keyless entry W/ power sliding sunroof X1 f6 X3 d4 X5 b1 X5 e2 Xm/ onstar fuse 10a Power Distribution Wiring Diagram (3 of 3) for Chevrolet Cobalt LS 2008 List of elements for Power Distribution Wiring Diagram (3 of 3) for Chevrolet Cobalt LS 2008: 53 (behind inflatable restraint steering wheel module, in steering column) j206 (not used) (under center dash, on right side of center console) body control module (bcm) 5v ref A4 x2 A8 x3 Acc Air bag fuse 10a Amplifier fuse 20a Audio amplifier Cluster fuse 10a D11 D12 x3 Driver heated seat switch (if equipped) Eps/str whl cntrl fuse 2a From bcm2 fuse (diagram 1 of 3) From run/crank relay (diagram 1 of 3) Hvac control module Hvac/ ip ign fuse 10a Hvac/ pk3 + fuse 10a Ign sw/ pk3 + fuse 2a Ignition lock cylinder control solenoid (a/t) Ignition switch Inflatable restraint front passenger presence system (pps) module Inflatable restraint passenger air bag on/off indicator Inflatable restraint steering wheel module coil Inflatable restraints sensing & diagnostic module (sdm) Instrument panel cluster Instrument panel cluster (ipc) Key-in ignition switch Left steering wheel control switch Logic Off Off/ run/ crank Passenger heated seat switch (if equipped) Pnk Pnk c Pnk d Power steering control module (pscm) Run Run/ crank Start Stop lp fuse 10a Theft deterrent control module Theft deterrent module W/ performance enhanced audio Windshield wiper/ washer switch Wiper fuse 10a X1 c pnk X2 a1 X3 d6 X4 c1 X4 d3
POWER DOOR LOCKS Power Door Locks Wiring Diagram (1 of 2) for Chevrolet Cobalt LS 2008 List of elements for Power Door Locks Wiring Diagram (1 of 2) for Chevrolet Cobalt LS 2008: 48 Antenna B10 B3 x3 Batt + volt Batt pos volt Body control module (bcm) (under center dash, on right side of center console) Clstr fuse 7 10a Computer data lines system D10 D8 x2 Driver door jamb switch Enable sig G201 (behind left side of dash, near steering column) G301 (under driver's seat) G401 (center of rear shelf, near left speaker) Gmlan Gmlan low speed Gmlan serial data + Gmlan serial data - Gnd Ground Hot at all times Instrument panel cluster (ipc) Interior lights system J330 (in body harness, near rear compt lid release actuator) Jx200 (lower left of dash, below hood release) Left rear door jamb switch Lf door jamb Lid release sw sig Logic Lr door jamb Nca Passenger door jamb switch Power distribution system Rdo fuse 23 15a Rear compartment lid release actuator (in latch assembly) Rear compartment lid release switch Rear compt ajar Release actuator Remote control door lock receiver (rcdlr) (w/ keyless entry) (under right dash trim panel, above passenger's inflator module) Rf door jamb Right rear door jamb switch Rr door jamb Sdm fuse 10a Tan Trunk pcb relay Trunk/ htd seats fuse 20a Underhood fuse block (in engine compt, next to left strut tower) Power Door Locks Wiring Diagram (2 of 2) for Chevrolet Cobalt LS 2008 List of elements for Power Door Locks Wiring Diagram (2 of 2) for Chevrolet Cobalt LS 2008: 31 Body control module (bcm) (under center dash, on right side of center console) Door lock pcb relay Door unlock ctrl Door unlock pcb relay Doors lock ctrl Dr door unlock ctrl Dr door unlock pcb relay Dr lck fuse 26 15a Driver door latch (power door locks w/ remote keyless entry & onstar) (center rear of driver's door) Driver door lock switch Driver's seat) E12 x4 Exterior lights system G203 (behind right side of dash) G301 (under Hazard switch sig Horn relay ctrl Horns system Hot at all times Interior lights system J200 (w/ power windows & remote outside mirrors) Left rear door latch (sedan & power door locks w/ remote keyless entry) (center rear of left rear door) Lock Lock/unlock sig Logic Passenger door latch (power door locks w/ remote keyless entry) (center rear of front passenger's door) Passenger door lock switch Power windows system Right rear door latch (sedan & power door locks w/ remote keyless entry) (center rear of right rear door) Tan Unlock
POWER MIRRORS Automatic Day/Night Mirror Wiring Diagram, with OnStar for Chevrolet Cobalt LS 2008 List of elements for Automatic Day/Night Mirror Wiring Diagram, with OnStar for Chevrolet Cobalt LS 2008: 23 (center of rear shelf, near left speaker) g401 Body control module (bcm) (under center dash, on right side of center console) Button back lighting Courtesy lp sply volt Emergency ind Emergency switch Hot at all times Inside rearview mirror Int light fuse 27 10a Interior lights system J401 Keypad green led ind Keypad green led signal Keypad red led ind Keypad red led signal Keypad signal Logic Onstar ind Onstar keypad Onstar switch Phone ind Phone switch Vehicle communication interface module (vcim) (under rear, shelf between speakers) Automatic Day/Night Mirror Wiring Diagram, without OnStar for Chevrolet Cobalt LS 2008 List of elements for Automatic Day/Night Mirror Wiring Diagram, without OnStar for Chevrolet Cobalt LS 2008: 9 Body control module (bcm) (under center dash, on right side of center console) Courtesy lp sply volt G401 (center of rear shelf, near left speaker) Hot at all times Inside rearview mirror Int light fuse 27 10a Interior lights system J401 Logic Power Mirrors Wiring Diagram for Chevrolet Cobalt LS 2008 List of elements for Power Mirrors Wiring Diagram for Chevrolet Cobalt LS 2008: 17 Down Driver Driver outside rearview mirror G301 (under driver's seat) Hot at all times Interior lights system J200 Left Left/ right Mir/ugdo fuse 5a Nca Outside rearview mirror switch Passenger Passenger outside rearview mirror Right Underhood fuse block (in engine compt, next to left strut tower) Up/ down
POWER SEATS Heated Seats Wiring Diagram for Chevrolet Cobalt LS 2008 List of elements for Heated Seats Wiring Diagram for Chevrolet Cobalt LS 2008: 31 (under driver's seat) A8 x3 Batt voltage Body control module (bcm) (under center dash, on right side of center console) C11 Driver heated seat module (under front center of driver seat) Driver heated seat switch Driver's back heated seat element (under upholstery of driver's seat back) Driver's cushion heated seat element (under upholstery of driver's seat bottom) G201 (behind left side of dash, near steering column) G301 Ground High High/low sig Hot at all times Hot w/ run/ crank relay energized Hvac/ip ign fuse 16 10a Interior lights system J301 J302 Low Passenger heated seat module (under front center of front passenger's seat) Passenger heated seat switch Passenger's back heated seat element (under upholstery of passenger's seat back) Passenger's cushion heated seat element (under upholstery of passenger's seat bottom) Pnk Sens low ref Sply volt Switch sig Trunk/ htd seats fuse 20a Underhood fuse block (in engine compt, next to left strut tower)
POWER TOP/SUNROOF Power Top/Sunroof Wiring Diagram for Chevrolet Cobalt LS 2008 List of elements for Power Top/Sunroof Wiring Diagram for Chevrolet Cobalt LS 2008: 15 + close + open Body control module (bcm) (under center dash, on right side of center console) Close G401 (center of rear shelf, near left speaker) Hot w/ rap relay energized J401 Limit switch Off Open S roof fuse 20 15a Sunroof motor (between sun visors, in headliner) Sunroof switch Vent Vent off
POWER WINDOWS Power Windows Wiring Diagram, Coupe for Chevrolet Cobalt LS 2008 List of elements for Power Windows Wiring Diagram, Coupe for Chevrolet Cobalt LS 2008: 15 Body control module (bcm) (under center dash, on right side of center console) Down Driver switch Driver window motor (in driver's door) Driver window switch Express logic Front passenger switch G301 (under driver's seat) Hot w/ rap relay energized Interior lights system J200 Passenger window motor (in right front door) Passenger window switch Pwr wndw fuse 29 30a Tan Power Windows Wiring Diagram, Sedan for Chevrolet Cobalt LS 2008 List of elements for Power Windows Wiring Diagram, Sedan for Chevrolet Cobalt LS 2008: 25 Body control module (bcm) (under center dash, on right side of center console) Down Driver switch Driver window motor (in driver's door) Driver window switch Express logic Front passenger switch G301 (under driver's seat) Hot w/ rap relay energized Interior lights system J200 J335 (in body harness, 2.55 cm from g301) Left rear switch Left rear window motor (in left rear door) Left rear window switch Lockout switch Passenger window motor (in right front door) Passenger window switch Pwr wndw fuse 29 30a Right rear switch Right rear window motor (in right rear door) Right rear window switch Tan X1 c X2 b
RADIO Radio Wiring Diagram, with Amplifier for Chevrolet Cobalt LS 2008 List of elements for Radio Wiring Diagram, with Amplifier for Chevrolet Cobalt LS 2008: 68 (behind left side of dash, near steering column) g201 (on steering column, behind steering wheel) inflatable restraint steering wheel module coil (under rear, shelf between speakers) (if equipped) vehicle communication interface module (vcim) 10v ref Amp fuse 6 20a Antenna sig Audio amplifier (under left side of dash) Audio common Bare Battery Body control module (bcm) (under center dash, on right side of center console) Cell telephone voice sig Cell voice low ref Cell voice sig Coax Computer data lines system D10 Drain wire G201 (behind left side of dash, near steering column) Ground Hot at all times L audio sig (+) Left front door speaker Left rear speaker Left tweeter speaker Lf lo lev audio (+) Lf lo lev audio (-) Lf spkr out (+) Lf spkr out (-) Low reference Low speed gmlan serial data Lr lo lev audio (+) Lr lo lev audio (-) Lr spkr out (+) Lr spkr out (-) Mute Nca Pnk Power distribution system R audio sig (+) Radio Radio antenna module Radio on sig Rdo fuse 23 15a Remote radio ctrl Rf lo lev audio (+) Rf lo lev audio (-) Rf spkr out (+) Rf spkr out (-) Right front door speaker Right rear speaker Right steering wheel control switch Right tweeter speaker Rr lo lev audio (+) Rr lo lev audio (-) Rr spkr out (+) Rr spkr out (-) Satellite radio circuit Srce Strg wheel ctrl sig Sub spkr out (+) Sub spkr out (-) Subwoofer speaker Tan Tan b Vol down Vol up X4 a1 Radio Wiring Diagram, without Amplifier for Chevrolet Cobalt LS 2008 List of elements for Radio Wiring Diagram, without Amplifier for Chevrolet Cobalt LS 2008: 46 10v ref Antenna sig Audio common Bare Batt Body control module (bcm) (under center dash, on right side of center console) Cell telephone voice sig Cell voice low ref Cell voice sig Coax Computer data lines system D10 Drain wire G201 (behind left side of dash, near steering column) Ground Hot at all times Inflatable restraint steering wheel module coil (on steering column, behind steering wheel) L audio sig (+) Left front door speaker Left rear speaker Lf spkr out (+) Lf spkr out (-) Low reference Low speed gmlan serial data Lr spkr out (+) Lr spkr out (-) Mute Power distribution system R audio sig (+) Radio Radio antenna module Rdo fuse 23 15a Rf spkr out (+) Rf spkr out (-) Right front door speaker Right rear speaker Right steering wheel control switch Rr spkr out (+) Rr spkr out (-) Satellite radio circuit Srce Strg wheel ctrl sig Tan Vehicle communication interface module (vcim) (if equipped) (under rear, shelf between speakers) Vol down Vol up Satellite Radio Wiring Diagram for Chevrolet Cobalt LS 2008 List of elements for Satellite Radio Wiring Diagram for Chevrolet Cobalt LS 2008: 20 (center rear shelf, under trim pad) digital radio receiver Ant sig Audio common Bare Battery volt Body control module (bcm) (under center dash, on right side of center console) Coax Computer data lines system Digital radio antenna (rear center of roof) Drain wire G401 (center of rear shelf, near left speaker) Ground Hot at all times J352 L audio sig (+) Power distribution system R audio sig (+) Radio Serial data Xm/ onstar fuse 24 10a
SHIFT INTERLOCK Shift Interlock Wiring Diagram for Chevrolet Cobalt LS 2008 List of elements for Shift Interlock Wiring Diagram for Chevrolet Cobalt LS 2008: 29 (under center dash, on right side of center console) (under driver's seat) 5v ref Acc Acc volt Anti-theft system Automatic transmission Automatic transmission shift lock control solenoid B12 Body control module (bcm) Brake pedal position sensor Brk sns Diode G301 Hot at all times Ignition lock cylinder control solenoid (in steering column, part of ignition lock cylinder) Ignition switch Interior lights system J206 Lo red Logic Lp volt Nca Off Park switch Run Shift lever Solnd volt Start
STARTING/CHARGING Charging Wiring Diagram for Chevrolet Cobalt LS 2008 List of elements for Charging Wiring Diagram for Chevrolet Cobalt LS 2008: 30 (left side of engine compartment, in front of underhood fuse block) engine control module (ecm) 5 volt ref Battery Body control module (bcm) (under center dash, on right side of center console) Charging indicator Computer data lines system Current sensor sig F6 x4 G203 (behind right side of dash) G301 (under driver's seat) G403 (rear compt, near battery current sensor) Gen fild cyc sig Gen turn on sig Generator Gnd Hi speed gmlan serial data + Hi speed gmlan serial data - x1 Hot w/ run/ crank relay energized Hvac/ ip ign fuse 16 10a Ign Ign 1 vol Instrument panel cluster (ipc) Lo spd gmlan serial data Logic Pnk Power distribution system Red Serial data Starter Tan Starting Wiring Diagram for Chevrolet Cobalt LS 2008 List of elements for Starting Wiring Diagram for Chevrolet Cobalt LS 2008: 37 (lower left front of transmission case) g105 (not used) 5v ref Acc Acce- ssory voltage B10 B12 Battery Body control module (bcm) (under center dash, on right side of center console) Charging circuit Computer data lines system Crank fuse 30a Crank relay D d Engine control module (ecm) (left side of engine compt, in front of underhood fuse block) Engine controls system G105 (lower left front of transmission case) G403 (rear compt, near battery current sensor) Hi speed gmlan serial data + Hi speed gmlan serial data - Hot at all times Ignition switch Logic Off Off/run/crank voltage Park/neutral position (pnp) switch (rear of engine, on top of transmission) Power distribution system R n Red Run Start Starter Starter control Tan Tan/ Transmission control module (tcm) (left rear of engine compartment, behind powertrain control module (pcm)/ecm) Underhood fuse block (in engine compt, next to left strut tower)
SUPPLEMENTAL RESTRAINTS Supplemental Restraints Wiring Diagram (1 of 2) for Chevrolet Cobalt LS 2008 List of elements for Supplemental Restraints Wiring Diagram (1 of 2) for Chevrolet Cobalt LS 2008: 41 (on lower corner of passenger's door) (under center console, near sensing & diagnostic module (sdm)) g306 Air bag fuse 13 10a Batt positive voltage Body control module (bcm) (under center dash, on right side of center console) Case ground Driver seat belt pretensioner (left "b" pillar) Gmlan serial data Ground High control Hot at all times Hot in run or start Hvac/ ip ign fuse 16 10a Ignition 1 voltage Ind Inflatable restraint instrument panel (ip) module (right side of dash, above glove compartment) Inflatable restraint sensing & diagnostic module (sdm) (under center console, behind parking brake) Inflatable restraint steering wheel module Inflatable restraint steering wheel module coil (on steering column, behind steering wheel) Left inflatable restraint side impact sensor (sis) (on lower corner of driver's door) Left seat belt sw sig Logic Low control Low ref Low reference Occupant sens sig Passenger seat belt pretensioner (right "b" pillar) Pin shorting bars engaged Pnk Right inflatable restraint side impact sensor (sis) Right seat belt sw sig Sdm fuse 10a Sensor signal Sensor voltage Shorting bar Stage 1 Stage 2 Tan Underhood fuse block (in engine compt, next to left strut tower) W/ left & right roof side inflatable system When module connector is disconnected from harness: (shorting bars are connected between following pins: 8-9 & 10-11) Supplemental Restraints Wiring Diagram (2 of 2) for Chevrolet Cobalt LS 2008 List of elements for Supplemental Restraints Wiring Diagram (2 of 2) for Chevrolet Cobalt LS 2008: 38 (lower left of dash, below hood release) splice pack jx200 (top center of radiator support, near hood latch) 5 volts ref Air bag indicator Data link connector (dlc) (lower left of dash, near hood release) Driver seat belt switch (part of seat belt buckle, right side of driver's seat) G203 (behind right side of dash) G301 (under driver's seat) Ground Ign Ignition 1 voltage Inflatable restraint front end sensor Inflatable restraint front passenger presence system (pps) module (under passenger seat cushion) Inflatable restraint front passenger presence system (pps) sensor (in front passenger seat cushion) Inflatable restraint passenger air bag on/off indicator Inflatable restraint passenger seat belt tension sensor Instrument panel cluster (ipc) J337 (in body harness, 6.5 cm from auxiliary power outlet console) Left inflatable restraint roof rail module (if equipped) (above front & rear door rails behind headliner) Logic Low ref Low reference Nca Occupant sens sig Off ind ctrl On ind ctrl Pass air bag ind Pass air bag off ind Pass air bag on ind Pass seat belt ind Pass seat belt sens Pass sens sig Passenger seat belt switch (part of seat belt buckle, left side of passenger's seat) Pnk Pnk a Right inflatable restraint roof rail module (if equipped) (above front & rear door rails behind headliner) Serial data Shorting bar
TRANSMISSION Transmission Wiring Diagram for Chevrolet Cobalt LS 2008 List of elements for Transmission Wiring Diagram for Chevrolet Cobalt LS 2008: 54 (left side of engine compartment, in front of underhood fuse block) engine control module (ecm) 1-2 shift solenoid (1-2 ss) valve 2-3 shift solenoid (2-3 ss) valve Acc vol ctrl Acc voltage Automatic transmission Automatic transmission fluid pressure (tfp) manual valve position switch Automatic transmission fluid temperature sensor Automatic transmission input shaft speed (iss) sensor B(+) Body control module (bcm) (under center dash, on right side of center console) Computer data lines system D4 x3 E4 x5 Ecm/ tcm fuse 25 10a Ecm/ trans fuse 10a Exterior lights system G105 (lower left front of transmission case) Gmlan bus (+) Gmlan bus (-) Gnd Hot at all times Hot in run or start Ign 1 voltage Iss high ctrl Iss low sig J103 Logic Park/neutral position (pnp) switch (rear of engine, on top of transmission) Pc sol hi ctrl Pc sol vlv lo ctrl Pnk Pressure control (pc) solenoid valve Red Stop lmp sw sig Sw sig a Sw sig b Sw sig c Sw sig d Sw sol valve ctrl Tan Tcc pwm valve ctrl Tcc release sw sig Tfp sw sig b Tfp sw sig c Tft sens low ref Tft sens sig Torque converter clutch pulse width modulation (tcc pwm) solenoid valve Transmission control module (left rear of engine compartment, behind powertrain control module (pcm)/ecm) Underhood fuse block (in engine compartment, next to left strut tower) Vehicle speed sensor (vss) Vss high sig Vss low sig X100
TRUNK, TAILGATE, FUEL DOOR Trunk Release Wiring Diagram for Chevrolet Cobalt LS 2008 List of elements for Trunk Release Wiring Diagram for Chevrolet Cobalt LS 2008: 23 (center of rear shelf, near left speaker) g401 (in body harness, near rear compt lid release actuator) j330 B10 Body control module (bcm) logic (under center dash, on right side of center console) Computer data lines system Driver information center (dic) G201 (behind left side of dash, near steering column) Gmlan serial data Hot at all times Instrument panel cluster (ipc) Interior lights system Jamb switch Jamb switch signal Logic Rear compartment lid release actuator (in latch assembly) Rear compartment lid release switch Release actuator Release switch signal Tan Trunk pcb relay Trunk release relay Trunk/ htd seats fuse 20a Underhood fuse block (in engine compt, next to left strut tower)
WARNING SYSTEMS Warning Systems Wiring Diagram for Chevrolet Cobalt LS 2008 List of elements for Warning Systems Wiring Diagram for Chevrolet Cobalt LS 2008: 70 (center of rear shelf, near left speaker) g401 (in body harness, 6.5 cm from auxiliary power outlet console) j337 (under driver's seat) g301 Abs ind Acc Air bag ind Auto Battery Bcm 2 fuse 40a Body control module (bcm) (under center dash, on right side of center console) Brake fluid level switch (in rear of engine compt, attached to master cylinder) Brake fluid lvl Brake ind Charge ind Class 2 serial data Computer data lines system D12 Dr lck fuse 26 15a Driver door ajar switch (lower left "a" pillar between door hinges) Driver information center (dic) Driver seat belt switch (part of seat belt buckle, right side of driver's seat) E12 Engine coolant temperature ind Front passenger door ajar switch (lower right "a" pillar between door hinges) G201 (behind left side of dash, near steering column) G203 (behind right side of dash) G301 (under driver's seat) Ground Head Hot at all times Ign Ignition switch Inflatable restraint sensing & diagnostic module (sdm) (under center console, behind parking brake) Instrument panel cluster (ipc) Int light fuse 27 10a J352 Key-in ignition switch Left rear door ajar switch (sedan) (center of left "b" pillar between hinges) Left seat belt sw Left turn Left turn ind Lf door ajar sw Logic Low engine oil pressure ind Low ref Low spd gmlan serial data Lr door ajar sw Lr turn sig sw sig Off Off run/crank vol Park Park brake sw Park brake switch (in center console, attached to parking brake) Park lmp sw sig Pnk Radio Red Rf door ajar sw Right rear door ajar switch (sedan) (center of right "b" pillar between hinges) Right turn Right turn ind Rr door ajar sw Rr turn sig sw sig Run Seat belt ind Serial data Start Traction off ind Turn signal/ multi- function switch Underhood fuse block (in engine compt, next to left strut tower)
WIPER/WASHER Wiper/Washer Wiring Diagram for Chevrolet Cobalt LS 2008 List of elements for Wiper/Washer Wiring Diagram for Chevrolet Cobalt LS 2008: 31 87a B2 x2 Body control module (bcm) (under center dash, on right side of center console) C12 x3 G101 (left side of engine compt, under coolant reservoir) High Hot at all times Hot w/ run/crank relay energized Int Logic Low Mist Off Park switch Pnk Power distribution system Underhood fuse block (in engine compt, next to left strut tower) Wash Windshield washer fluid pump (lower left side of windshield washer reservoir) Windshield washer pump control Windshield wiper motor (in left rear of engine compt, above master cylinder reservoir) Windshield wiper motor park switch signal Windshield wiper switch signal 1 Windshield wiper switch signal 2 Windshield wiper/washer switch (steering column, on right side) Wiper diode Wiper fuse 25a Wpr fuse 15 10a Wpr hi/lo relay Wpr on/off relay X3 b2
