TRANSMISSION – Chevrolet Forward Control P12 1998 – SYSTEM WIRING DIAGRAMS

TRANSMISSION

4.3L

4.3L (VIN W), Transmission Wiring Diagram, 4L80-E for Chevrolet Forward Control P12 1998

List of elements for 4.3L (VIN W), Transmission Wiring Diagram, 4L80-E for Chevrolet Forward Control P12 1998:

• (a/t output speed sensor)
• (mil)
• (twisted wire pair)
• 1-2 shift
• 1-2 shift sol
• 2-3 shift sol
• 2-3 shift solenoid
• 5v reference
• A/c compressor relay, generator & seat belt/ headlamps alarm module
• A/t input speed sensor (left side of transmission)
• A/t iss hi in
• A/t iss lo in
• Anti-lock brakes, cruise control & shift interlock systems
• Automatic transmission (4l80-e)
• Battery in
• Brake switch input
• Buss bar
• Data class ii
• Data link connector (partial) (below dash, near steering column)
• Ecm bat fuse 6 20a
• Ecm-1 fuse 12 20a
• Ect sens input
• Electronic brake control module & cruise control module
• Engine controls system
• Engine coolant temperture sensor (top front of engine)
• Fuel injectors (engine controls system)
• Fuel pump relay & switch
• G114 (rear of left clinder head)
• Gauges fuse 8 20a
• Hot at all times
• Hot in run
• Hot in run or start
• I-3 fuse 9 15a
• I/p fuse block
• Ignition in
• Instrument cluster
• Mil control
• Pcm ground
• Pcs sol hi out
• Pcs sol lo out
• Pnk
• Press ctrl
• Range signal "a"
• Range signal "b"
• Range signal "c"
• Red
• S108 s121
• S118
• S118 (7.4l) (eng harn, 19 cm from breakout for left front wheel sensor)
• S119 (engine harness, near ect sensor- 4.3l/5.7l) (engine harness, 4 cm from generator breakout- 7.4l)
• S133 s116
• S134 s114
• S135
• S135 (4.3l/5.7l) (eng harn, 8 cm from ect breakout)
• S143/s166
• S150/s202 (i/p harn)
• S200 (eng harn, 19 cm from firewall grommet towards ignition switch-4.3l/5.7l) (eng harn, 45 cm from map sensor breakout-7.4l)
• S207 s154
• Sensor ground
• Sensor return
• Service engine soon indicator
• Solenoid
• Tcc pwm
• Tcc pwm sol
• Tcc/ stop lamps switch
• Throttle position sensor (on throttle body)
• Tp sens input
• Trans fluid temp sensor
• Trans fuse 17 10a
• Trans range pressure switch assembly
• Trans temp sig in
• Vehicle control module (center front of engine compt)
• Vehicle speed sensor (left rear of transmission)
• Vss hi
• Vss lo

5.7L

5.7L (VIN R), Transmission Wiring Diagram, 4L80-E for Chevrolet Forward Control P12 1998

List of elements for 5.7L (VIN R), Transmission Wiring Diagram, 4L80-E for Chevrolet Forward Control P12 1998:

• (a/t output speed sensor)
• (mil)
• (twisted wire pair)
• 1-2 shift
• 1-2 shift sol
• 2-3 shift sol
• 2-3 shift solenoid
• 5v reference
• A/c compressor relay, generator & seat belt/ headlamps alarm module
• A/t input speed sensor (left side of transmission)
• A/t iss hi in
• A/t iss lo in
• Anti-lock brakes, cruise control & shift interlock systems
• Automatic transmission (4l80-e)
• Battery in
• Brake switch input
• Buss bar
• Data class ii
• Data link connector (partial) (below dash, near steering column)
• Ecm bat fuse 6 20a
• Ecm-1 fuse 12 20a
• Ect sens input
• Electronic brake control module & cruise control module
• Engine controls system
• Engine coolant temperture sensor (top front of engine)
• Fuel injectors (engine controls system)
• Fuel pump relay & switch
• G114 (rear of left clinder head)
• Gauges fuse 8 20a
• Hot at all times
• Hot in run
• Hot in run or start
• I-3 fuse 9 15a
• I/p fuse block
• Ignition in
• Instrument cluster
• Mil control
• Pcm ground
• Pcs sol hi out
• Pcs sol lo out
• Pnk
• Press ctrl
• Range signal "a"
• Range signal "b"
• Range signal "c"
• Red
• S108 s121
• S118
• S118 (7.4l) (eng harn, 19 cm from breakout for left front wheel sensor)
• S119 (engine harness, near ect sensor- 4.3l/5.7l) (engine harness, 4 cm from generator breakout- 7.4l)
• S133 s116
• S134 s114
• S135
• S135 (4.3l/5.7l) (eng harn, 8 cm from ect breakout)
• S143/s166
• S150/s202 (i/p harn)
• S200 (eng harn, 19 cm from firewall grommet towards ignition switch-4.3l/5.7l) (eng harn, 45 cm from map sensor breakout-7.4l)
• S207 s154
• Sensor ground
• Sensor return
• Service engine soon indicator
• Solenoid
• Tcc pwm
• Tcc pwm sol
• Tcc/ stop lamps switch
• Throttle position sensor (on throttle body)
• Tp sens input
• Trans fluid temp sensor
• Trans fuse 17 10a
• Trans range pressure switch assembly
• Trans temp sig in
• Vehicle control module (center front of engine compt)
• Vehicle speed sensor (left rear of transmission)
• Vss hi
• Vss lo

6.5L

6.5L (VIN F), Transmission Wiring Diagram, 4L80-E for Chevrolet Forward Control P12 1998

List of elements for 6.5L (VIN F), Transmission Wiring Diagram, 4L80-E for Chevrolet Forward Control P12 1998:

• (rear lamps provision connector)
• (twisted wire pair)
• 1-2 shift
• 1-2 shift sol
• 2-3 shift sol
• 2-3 shift solenoid
• 3-2 shift
• 3-2 shift sol
• A/c pnk
• A/t input speed sensor (left side of transmission)
• A/t iss sens hi in
• A/t iss sens lo in
• A12
• Accelerator pedal position module (attached to accelerator pedal)
• App 1 5v ref
• App 1 signal in
• App 2 5v ref
• App 2 signal in
• App 3 5v ref
• App 3 signal in
• Automatic transmission (4l80-e)
• B10
• B12
• Battery in
• Brake switch in
• Buss bar
• C11
• C12
• C13
• C14
• C15
• Class ii data
• Compressor relay, generator & turbo charger power valve
• D11
• D12
• D13
• Data link connector (partial) (below dash, near steering column)
• Ecm-1 fuse 12 20a
• Ecm-bat fuse 6 20a
• Ect sensor in
• Electronic brake control module
• Engine coolant temperature sensor (top front of engine)
• Fuel pump relay & fuel pump switch/engine oil pressure indicator sensor
• G114 (left rear of engine block)
• Gauges fuse 8 20a
• Hazard lamps flasher (above steering column)
• Hot at all times
• Hot in run
• Hot in run or start
• I-3 fuse 9 15a
• I/p fuse block
• Ignition in
• Indicator
• Instrument cluster
• Mil control
• Pcm ground
• Pcs sol hi out
• Pcs sol lo out
• Pnk
• Powertrain control module (left side of driver's island)
• Press ctrl solenoid
• Red
• S114
• S119 (engine harn, 4 cm from glow plug controller break-out)
• S121
• S124 (engine harn, 13 cm from a/c compressor hi-press cut-off switch breakout)
• S133
• S154
• S166
• S200 (eng harn, dash side near ignition switch)
• S202 (dash harness)
• Sensor ground
• Service engine soon (mil)
• Solenoid
• Stop-haz fuse 11 15a
• Stoplamp switch in
• Tft sensor in
• Torque converter clutch brake & stoplamp switch
• Trans fluid temp sensor
• Trans range "a"
• Trans range "b"
• Trans range "c"
• Trans range pressure switch assembly
• Transmission fuse 17 10a
• Vehicle speed sensor (left rear of transmission)
• Vehicle speed sensor calibrator & engine shutoff solenoid
• Vehicle speed sensor calibrator (above accelerator pedal)
• Vss hi in
• Vss lo in
• Vss out

6.5L (VIN Y), Transmission Wiring Diagram, with Electronic Engine Controls for Chevrolet Forward Control P12 1998

List of elements for 6.5L (VIN Y), Transmission Wiring Diagram, with Electronic Engine Controls for Chevrolet Forward Control P12 1998:

• (rear lamps provision connector)
• (twisted wire pair)
• 1-2 shift
• 1-2 shift sol
• 2-3 shift sol
• 2-3 shift solenoid
• 3-2 shift
• 3-2 shift sol
• A/c compressor relay & generator
• A/t input speed sensor (left side of transmission)
• A/t iss sens hi in
• A/t iss sens lo in
• A12
• App 1 5v ref
• App 1 signal in
• App 2 5v ref
• App 2 signal in
• App 3 5v ref
• App 3 signal in
• Automatic transmission (4l80-e)
• B10
• B12
• Battery in
• Brake switch in
• Buss bar
• C11
• C12
• C13
• C14
• C15
• Class ii data
• D11
• D12
• D13
• Data link connector (partial) (below dash, near steering column)
• Ecm-1 fuse 12 20a
• Ecm-bat fuse 6 20a
• Ect sensor in
• Electronic accelerator pedal control (accelerator pedal position module) (attached to accelerator pedal)
• Electronic brake control module
• Engine coolant temperature sensor (top front of engine)
• Fuel pump relay & engine oil pressure indicator sensor
• G114 (rear of left cylinder head)
• Gauges fuse 8 20a
• Hazard lamps flasher (above steering column)
• Hot at all times
• Hot in run
• Hot in run or start
• I-3 fuse 9 15a
• I/p fuse block
• Ignition in
• Indicator
• Instrument cluster
• Mil control
• Pcm ground
• Pcs sol hi out
• Pcs sol lo out
• Pnk
• Powertrain control module (left side of driver's island)
• Press ctrl solenoid
• Red
• S108
• S119 (engine harn, 4 cm from glow plug controller break-out)
• S124 (engine harn, 13 cm from a/c compressor hi-press cut-off switch breakout)
• S133
• S143
• S150 (dash harness)
• S170
• S200 (eng harn, dash side near ignition switch)
• S207
• Sensor ground
• Service engine soon (mil)
• Solenoid
• Stop-haz fuse 11 15a
• Stoplamp switch in
• Tft sensor in
• Torque converter clutch & stoplamp switch
• Trans fluid temp sensor
• Trans range "a"
• Trans range "b"
• Trans range "c"
• Trans range pressure switch assembly
• Transmission fuse 17 10a
• Vehicle speed sensor (left rear of transmission)
• Vehicle speed sensor buffer
• Vehicle speed sensor buffer (above accelerator pedal)
• Vss hi in
• Vss lo in
• Vss out

6.5L (VIN Y), Transmission Wiring Diagram, without Electronic Engine Controls for Chevrolet Forward Control P12 1998

List of elements for 6.5L (VIN Y), Transmission Wiring Diagram, without Electronic Engine Controls for Chevrolet Forward Control P12 1998:

• 1-2 shift sol
• 1-2 shift sol ctrl
• 2-3 shift sol
• 2-3 shift sol ctrl
• 5 volts ref
• 5v in
• 5v rtn
• A/t input speed sensor (left front side of transmission)
• A10
• A11
• A12
• Automatic transmission (4l80-e)
• B10
• B11
• B12
• Baro sensor input
• Barometric pressure sensor (top left rear of intake manifold)
• Battery feed
• Brake signal
• C10
• C11
• C12
• C13
• C14
• C15
• C16
• D10
• D11
• D12
• D13
• D14
• D15
• D16
• Data link connector (partial) (below dash, near steering column)
• Diagnostic test
• Drl module, drl relay & generator
• Ecm-1 fuse 12 20a
• Ecm-bat fuse 6 20a
• Electronic brake control module
• Engine oil pressure indicator sensor & fuel pump relay
• Engine speed sensor (in fuel injection pump)
• Engine speed signal
• Fuel injection pump shutoff solenoid, & fuel pump relay
• G114 (rear of left cylinder head)
• Gauges fuse 8 20a
• Hot at all times
• Hot in run
• Hot in run or start
• I-3 fuse 9 15a
• I/p fuse block
• Ign buss
• Ignition
• Input speed sens hi
• Input speed sens lo
• Instrument cluster
• Out
• Pcs hi
• Pcs lo
• Pnk
• Pnk n
• Pressure control solenoid
• Range mode selector
• Range signal a
• Range signal b
• Range signal c
• Red
• Red p
• S108
• S111 (engine harn, 10 cm from generator breakout)
• S119 (engine harn, 6 cm from glow plug switch breakout)
• S133
• S143
• S170
• S200 (engine harn, dash side near ignition switch)
• S207
• Sensor ground
• Serial data
• Service trans output
• Service transmission indicator
• Stop lamps & torque converter brake switch
• System ground
• Tan
• Tcc pwm control
• Tcc pwm sol
• Throttle position sensor (on fuel injection pump)
• Tp sensor input
• Trans fluid temp sig
• Trans fuse 17 10a
• Transmission control module (left interior firewall)
• Transmission temperature sensor
• Vehicle spd output
• Vehicle speed input
• Vehicle speed sensor (left rear of transmission)
• Vehicle speed sensor buffer
• Vss inputs

7.4L

7.4L (VIN J), Transmission Wiring Diagram, 4L80-E for Chevrolet Forward Control P12 1998

List of elements for 7.4L (VIN J), Transmission Wiring Diagram, 4L80-E for Chevrolet Forward Control P12 1998:

• (a/t output speed sensor)
• (mil)
• (twisted wire pair)
• 1-2 shift
• 1-2 shift sol
• 2-3 shift sol
• 2-3 shift solenoid
• 5v reference
• A/c compressor relay, generator & seat belt/ headlamps alarm module
• A/t input speed sensor (left side of transmission)
• A/t iss hi in
• A/t iss lo in
• Anti-lock brakes, cruise control & shift interlock systems
• Automatic transmission (4l80-e)
• Battery in
• Brake switch input
• Buss bar
• Data class ii
• Data link connector (partial) (below dash, near steering column)
• Ecm bat fuse 6 20a
• Ecm-1 fuse 12 20a
• Ect sens input
• Electronic brake control module & cruise control module
• Engine controls system
• Engine coolant temperture sensor (top front of engine)
• Fuel injectors (engine controls system)
• Fuel pump relay & switch
• G114 (rear of left clinder head)
• Gauges fuse 8 20a
• Hot at all times
• Hot in run
• Hot in run or start
• I-3 fuse 9 15a
• I/p fuse block
• Ignition in
• Instrument cluster
• Mil control
• Pcm ground
• Pcs sol hi out
• Pcs sol lo out
• Pnk
• Press ctrl
• Range signal "a"
• Range signal "b"
• Range signal "c"
• Red
• S108 s121
• S118
• S118 (7.4l) (eng harn, 19 cm from breakout for left front wheel sensor)
• S119 (engine harness, near ect sensor- 4.3l/5.7l) (engine harness, 4 cm from generator breakout- 7.4l)
• S133 s116
• S134 s114
• S135
• S135 (4.3l/5.7l) (eng harn, 8 cm from ect breakout)
• S143/s166
• S150/s202 (i/p harn)
• S200 (eng harn, 19 cm from firewall grommet towards ignition switch-4.3l/5.7l) (eng harn, 45 cm from map sensor breakout-7.4l)
• S207 s154
• Sensor ground
• Sensor return
• Service engine soon indicator
• Solenoid
• Tcc pwm
• Tcc pwm sol
• Tcc/ stop lamps switch
• Throttle position sensor (on throttle body)
• Tp sens input
• Trans fluid temp sensor
• Trans fuse 17 10a
• Trans range pressure switch assembly
• Trans temp sig in
• Vehicle control module (center front of engine compt)
• Vehicle speed sensor (left rear of transmission)
• Vss hi
• Vss lo