ENGINE PERFORMANCE – Isuzu Ascender Limited 2006 – SYSTEM WIRING DIAGRAMS

ENGINE PERFORMANCE

4.2L

4.2L, Engine Performance Wiring Diagram (1 of 5) for Isuzu Ascender Limited 2006

List of elements for 4.2L, Engine Performance Wiring Diagram (1 of 5) for Isuzu Ascender Limited 2006:

• (not used)
• (w/o eap: on brake pedal support) (w/ eap: top of brake pedal bracket) stoplamp switch
• 4wd low sig
• 5v ref
• 5v ref 1
• A/c refrigerant
• A/c refrigerant pressure sensor (bottom left front of engine)
• A12
• Accelerator pedal position (app) sensor (w/ eap: under left side of i/p) (w/o eap: on accelerator bracket)
• Air conditioning system
• Air pmp rly ctrl
• Air pump fuse 56 60a
• Air sol fuse 54 15a
• Air sol relay
• Anti-lock brakes system
• App sens 1 sig
• App sens 2 sig
• B10
• Batt pos volt
• Class 2 data
• Comp clutch rly
• Computer data lines system
• Cool fan clutch
• Cool fan spd sig
• Cooling fans system
• Crank fuse 17 10a
• Crank volt
• Cruise control system
• Cruise ctrl sw
• Cruise on sw sig
• D11
• E11
• Eng speed sig
• Engine speed sig
• Etc/tcc brk sig
• Evap vent sol
• Exterior lights system
• Fuel lvl sens
• Fuel pmp rly
• Fuel tank pressure sensor (at top left rear of fuel tank)
• Fuel tank sens
• Hot at all times
• Hot in acc, run or start
• Hot in run or start
• Hot in start
• Ign 1 volt
• Ign e fuse 22 10a
• Ign o fuse 47 10a
• Ign volt
• Instrument cluster system
• Instrument panel cluster (ipc)
• Logic
• Low ref
• Low ref b
• Malfunction indicator lamp
• Mil ctrl
• Pcm b fuse 10 20a
• Pnk
• Pnp sw sig
• Powertrain control module (pcm) (on left front of engine)
• Rear fuse block (below left rear seat)
• Red
• Res/accel sw sig
• Rly coil ctrl
• St/lp fuse 25a
• Start enable rly
• Starting/charging system
• Stop lmp sw sig
• Tan
• Transmissions system
• Underhood fuse block (on left side of engine compt)
• Veh stop fuse 34 15a
• Vss sig

4.2L, Engine Performance Wiring Diagram (2 of 5) for Isuzu Ascender Limited 2006

List of elements for 4.2L, Engine Performance Wiring Diagram (2 of 5) for Isuzu Ascender Limited 2006:

• (on left frame rail, near ebcm) secondary air injection (air) pump
• (on left frame rail, near ebcm) secondary air injection (air) pump relay
• A red
• A11
• C10
• C11
• Etc fuse 23 10a
• Evaporative emission (evap) canister purge solenoid (left side of engine)
• Evaporative emission canister vent solenoid (rear of fuel tank)
• Fuel pump & sender assembly
• Fuel pump relay
• G107 (on lower left side of engine)
• G305 (on outside of left frame rail, near fuel tank)
• Ground distribution system
• Heated oxygen sensor (ho2s) 1 (right side of engine, on exhaust manifold)
• Heated oxygen sensor (ho2s) 2 (in exhaust pipe, adjacent to transmission)
• Hot at all times
• Lwb
• Nca
• O2 snsr fuse 29 10a
• Pcm b fuse 10 20a
• Pnk
• Powertrain relay 57
• Red
• Secondary air injection (air) solenoid (right rear of engine compt)
• Swb
• Tan
• Tcm cnstr fuse 26 10a
• Throttle body
• Underhood fuse block (on left side of engine compt)

4.2L, Engine Performance Wiring Diagram (3 of 5) for Isuzu Ascender Limited 2006

List of elements for 4.2L, Engine Performance Wiring Diagram (3 of 5) for Isuzu Ascender Limited 2006:

• (in intake air duct) mass airflow (maf)/ intake air temperature (iat) sensor
• (on left front of engine) powertrain control module (pcm)
• (on left rear of engine, below starter) crankshaft position (ckp) sensor
• (on right front of cylinder head) camshaft position (cmp) sensor
• (on upper left side of engine) manifold absolute pressure (map) sensor
• 12v ref
• 5v ref
• 5v ref 1
• Air sol rly ctrl
• Camshaft actuator solenoid assembly (on right front of cylinder head)
• Camshaft pos sol
• Charging system starting/
• Ckp sig
• Cmp sens sig
• Cooling fans system
• Ect sens sig
• Engine coolant temperature (ect) sensor (on left front of engine, near generator)
• Front knock sensor (ks) 1 (on lower left front of engine block)
• Front knock sensor (ks) 2 (on lower left rear of engine block)
• Fuel inj 1 ctrl
• Fuel inj 2 ctrl
• Fuel inj 3 ctrl
• Fuel inj 4 ctrl
• Fuel inj 5 ctrl
• Fuel inj 6 ctrl
• G108 (on lower left side of engine)
• Gen field duty
• Gen turn on sig
• Ground
• Ground distribution system
• Hall effect sensor
• Ho2s hi sig b1 s1
• Ho2s htr lo b1 s1
• Ho2s lo sig b1 s1
• Iat
• Iat sens sig
• Ign coil 1 ctrl
• Ign coil 2 ctrl
• Ign coil 3 ctrl
• Ign coil 4 ctrl
• Ign coil 5 ctrl
• Ign coil 6 ctrl
• Ks 1 sig
• Ks 2 sig
• Low ref
• Low ref b
• Maf
• Maf sens sig
• Map sens sig
• Pnk
• Powertrain control module (pcm) (on left front of engine)
• Red
• Starting/ charging system
• Tac mtr ctrl 1
• Tac mtr ctrl 2
• Tan
• Tp sens 1 sig
• Tp sens 2 sig
• Underhood fuse block (on left side of engine compt)

4.2L, Engine Performance Wiring Diagram (4 of 5) for Isuzu Ascender Limited 2006

List of elements for 4.2L, Engine Performance Wiring Diagram (4 of 5) for Isuzu Ascender Limited 2006:

• (pc) solenoid valve pressure control
• (tcc) solenoid valve torque converter clutch
• 1-2 shift solenoid (1-2 ss) valve
• 2-3 shift solenoid (2-3 ss) valve
• 3-2 shift solnoid (3-2ss) valve
• Automatic transmission
• Automatic transmission fluid pressure manual valve position switch
• C10
• D10
• D2 switch
• D3 switch
• D4 switch
• E10
• F10
• Fluid temperature sensor automatic transmission
• Fuel injectors (left side of engine)
• G109 (on lower left side of of engine)
• Hot in run or start
• Ignition coils (top of engine)
• Lo switch
• Nca
• Pcm 1 fuse 28 15a
• Pnk
• Red
• Rev switch
• Spark plug
• Tan
• Torque converter clutch pulse width modulation (tcc pmw) solenoid valve
• Underhood fuse block (on left side of engine compt)

4.2L, Engine Performance Wiring Diagram (5 of 5) for Isuzu Ascender Limited 2006

List of elements for 4.2L, Engine Performance Wiring Diagram (5 of 5) for Isuzu Ascender Limited 2006:

• 1-2 shift sol ctrl
• 2-3 shift sol ctrl
• 3-2 sol vlv ctrl
• Air inj vlv 1 ctrl
• Anti-lock brakes system
• C1 underhood fuse block (on left side of engine compt)
• Deliver torque sig
• Engine oil pressure switch (on bottom right side of engine)
• Evap purge sol
• Fluid temp sens
• G108 (on lower left side of engine)
• Ground distribution system
• Ho2s hi b1 s2
• Ho2s htr lo b1 s2
• Low ref
• Oil pres sw sig
• Park/neutral position switch (on left side of transmission)
• Pc sol vlv ctrl
• Pc sol vlv hi ctrl
• Pnk
• Powertrain control module (pcm) (on left front of engine)
• Pres sw sig c
• Press sw sig a
• Red
• Req torque sig
• Tcc pwm sol vlv
• Tcc sol vlv ctrl
• Tfp sw sig b
• Trs sig a
• Trs sig b
• Trs sig c
• Trs sig p
• Vehicle speed sensor (2wd: on right rear of transmission) (4wd: on left rear of transfer case)
• Vss high sig
• Vss low sig

5.3L

5.3L, Engine Performance Wiring Diagram (1 of 5) for Isuzu Ascender Limited 2006

List of elements for 5.3L, Engine Performance Wiring Diagram (1 of 5) for Isuzu Ascender Limited 2006:

• (not used)
• 5 volt
• 5 volt ref
• A/c ref pre sen
• A/c refrigerant pressure sensor (on bottom right side of engine)
• A12
• App sens 1
• App sens 2
• Battery
• Computer data lines system
• Cool fan clu ctrl
• Cool fan speed sig
• Cooling fans system
• Crank fuse 17 10a
• Crank volt
• Cruise control system
• Cruise on sw sig
• Ecm 1 fuse 10a
• Eng speed sig
• Engine control module (ecm) (on left front of engine compt)
• Engine speed
• Evap can
• Evaporative emission (evap) canister vent solenoid (rear of fuel tank)
• Exterior lights system
• Ftp sens
• Fuel lvl sens sig
• Fuel pump & sender assembly
• Fuel pump relay
• Fuel pump rly
• Fuel tank pressure (ftp) sensor (at top left rear of fuel tank)
• G107 (lower left side of engine)
• G305 (on outside of left frame rail, near fuel tank)
• Hot at all times
• Hot in run or start
• Hot in start
• Ign 0 volt
• Ign 1 volt
• Ign e fuse 10a
• Instrument cluster system
• Instrument panel cluster (ipc)
• Logic
• Low ref
• Malfunction indicator lamp
• Mil ctrl
• Pcm b fuse 10 20a
• Pnk
• Pnp sw
• Pwr diag
• Res/acc sw sig
• Serial data
• Serial data 2
• Set/coast sw sig
• St/lp fuse 12 25a
• Start relay
• Starting/charging system
• Stop lamp volts
• Stoplamp switch (w/o eap: on brake pedal support) (w/ eap: top of brake pedal bracket)
• Tan
• Tcc brake sw
• Tcm/ canister fuse 15 10a
• Underhood fuse block (on left side of engine compt)
• Vss

5.3L, Engine Performance Wiring Diagram (2 of 5) for Isuzu Ascender Limited 2006

List of elements for 5.3L, Engine Performance Wiring Diagram (2 of 5) for Isuzu Ascender Limited 2006:

• (on brake booster) brake booster vacuum sensor
• (w/ eap: under lfet side of i/p) (w/o eap: on accelerator bracket) accelerator pedal position (app) sensor
• 4wd lo sig
• 5 volt ref
• A/c comp rly
• Air conditioning system
• Anti-lock brakes system
• Brk booster
• Cooling fans system
• Cylinder shutoff solenoid 1
• Cylinder shutoff solenoid 2
• Cylinder shutoff solenoid 3
• Cylinder shutoff solenoid 4
• Del torque
• Engine control module (ecm) (on left front of engine compt)
• Front hi sig
• Ho2s hi sig
• Ho2s htr lo
• Ho2s lo sig
• Hot in acc, run or start
• Iat sensor
• Ign o fuse 47 10a
• Low ref
• Maf sensor
• Pnk
• Rear fuse block (below left rear seat)
• Req torq
• Tan
• Transmissions system
• Valve lifter oil manifold (vlom) assembly
• Veh stop fuse 34 15a

5.3L, Engine Performance Wiring Diagram (3 of 5) for Isuzu Ascender Limited 2006

List of elements for 5.3L, Engine Performance Wiring Diagram (3 of 5) for Isuzu Ascender Limited 2006:

• (lower front of engine) camshaft position (cmp) sensor
• (on left side of engine compt) underhood fuse block
• (on right rear of engine, near starter) crankshaft position (ckp) sensor
• (on top of of engine)
• A11
• C11
• Ecm fuse 29 10a
• Eng 1 fuse 26 15a
• Engine oil pressure (eop) sensor
• Etc fuse 23 15a
• Evaporative emission (evap) canister purge solenoid
• F10
• F11 f11
• G108 (lower left side of engine)
• Ground distribution system
• Heated oxygen sensor (ho2s) bank 1 sensor 1 (on left bank exhaust pipe, ahead of catalytic converter)
• Heated oxygen sensor (ho2s) bank 1 sensor 2 (on left bank exhaust pipe, behind catalytic converter)
• Heated oxygen sensor (ho2s) bank 2 sensor 1 (on right bank exhaust pipe, ahead of catalytic converter)
• Heated oxygen sensor (ho2s) bank 2 sensor 2 (on right bank exhaust pipe, behind catalytic converter)
• Hot at all times
• Iat
• Inj a fuse 31 20a
• Inj b fuse 56 20a
• Maf
• Mass airflow (maf)/intake air temperature (iat) sensor (in intake air duct)
• Nca
• O2 snsr a fuse 55 10a
• O2 snsr b fuse 54 10a
• Pnk
• Pnk pnk
• Powertrain relay 60
• Red
• Tan
• Underhood fuse block (on left side of engine compt)

5.3L, Engine Performance Wiring Diagram (4 of 5) for Isuzu Ascender Limited 2006

List of elements for 5.3L, Engine Performance Wiring Diagram (4 of 5) for Isuzu Ascender Limited 2006:

• Fuel injectors
• Left knock sensor (ks) 1 (left side of engine)
• Manifold absolute pressure (map) sensor (on top of engine)
• Pnk
• Red
• Tan
• Throttle body (on top front of engine)

5.3L, Engine Performance Wiring Diagram (5 of 5) for Isuzu Ascender Limited 2006

List of elements for 5.3L, Engine Performance Wiring Diagram (5 of 5) for Isuzu Ascender Limited 2006:

• (left side of engine) g109
• 12 volt ref
• 5 volt ref
• Ckp sensor
• Cmp sensor
• Ctrl
• Cyl shut sol 1
• Cyl shut sol 2
• Cyl shut sol 3
• Cyl shut sol 4
• Ect sens sig
• Engine control module (ecm) (on left front of engine compt)
• Engine coolant temperature (ect) sensor (left front of engine)
• Evap can sol
• Fuel inj 1 ctrl
• Fuel inj 2 ctrl
• Fuel inj 3 ctrl
• Fuel inj 4 ctrl
• Fuel inj 5 ctrl
• Fuel inj 6 ctrl
• Fuel inj 7 ctrl
• Fuel inj 8 ctrl
• Gen field
• Gen turn on sig
• Gnd
• Ho2s heater lo
• Ho2s hi
• Ho2s hi sig
• Ho2s htr lo
• Ho2s low
• Ho2s low sig
• Ign
• Ign ctrl 1
• Ign ctrl 2
• Ign ctrl 3
• Ign ctrl 4
• Ign ctrl 5
• Ign ctrl 6
• Ign ctrl 7
• Ign ctrl 8
• Ignition coils (ign coils 1, 3, 5 & 7: top left side of engine) (ign coils 2, 4, 6 & 8: top right side of engine)
• Ks 1 sens sig
• Ks 2 sensor sig
• Low ref
• Map sensor
• Nca
• Nca nca
• Oil press
• Pnk
• Red
• Ref lo
• Right knock sensor (ks) 2 (right side of engine)
• Spark plug
• Starting/ charging system
• Tac mtr ctrl 1
• Tac mtr ctrl 2
• Tan
• Tp sens 1 sig
• Tp sens 2 sig