ENGINE PERFORMANCE – Jeep Grand Cherokee Laredo 2000 – SYSTEM WIRING DIAGRAMS

ENGINE PERFORMANCE

4.0L

4.0L, Engine Performance Wiring Diagrams (1 of 3) for Jeep Grand Cherokee Laredo 2000

List of elements for 4.0L, Engine Performance Wiring Diagrams (1 of 3) for Jeep Grand Cherokee Laredo 2000:

• (in pdc) transmission control relay
• (left rear of transmission) output speed sensor
• (on transmission valve body) transmission solenoid
• (right side of engine)
• +5v
• 3-4 shift sol
• C24
• Ckp sens
• Cmp sens
• Coil drv 1
• Coil drv 2
• Coil drv 3
• Cooling fan system
• Ect sens
• F991
• Fan rly ctrl
• Fuel injectors
• Fuse 10a
• Fuse 15a
• Fuse 30a
• Fused b+
• G120
• G60
• Gen field drv
• Generator
• Gov pres sens
• Gov pres sig
• Gov pres sol
• Ground
• Hot at all times
• Iac 1 drv
• Iac 2 drv
• Iac 3 drv
• Iac 4 drv
• Iat sens
• Ign sw out
• Inj 1 drv
• Inj 2 drv
• Inj 3 drv
• Inj 4 drv
• Inj 5 drv
• Inj 6 drv
• Instrument cluster, anti-lock brakes & transmission control systems (vehicle speed signal)
• K11
• K12
• K13
• K14
• K141
• K20
• K21
• K22
• K24
• K241
• K30
• K341
• K38
• K39
• K40
• K41
• K44
• K58
• K59
• K60
• K88
• K91
• K92
• K93
• Map sens
• Nca
• O2 sens 1/1
• O2 sens 1/2
• O2 sens 2/1
• O2 sens 2/2
• Oil pres sens
• Out spd sens
• P/n switch
• Park/neutral position switch (lower left side of transmission)
• Pnk
• Power distribution center (at right front corner of eng compt, next to battery)
• Powertrain control module (on right side of firewall)
• Rail coil (right rear of engine)
• Red
• S102 (eng harn, near breakout for rail coil)
• S109 (eng harn, near breakout for fuel inj 2)
• S122 (eng harn, near breakout in rail coil)
• S126 (eng harn, in trough near breakout for pcm)
• Sens ground
• Sensor ground
• Solenoid ctrl
• Spd sens gnd
• Starting system
• T121
• T13
• T14
• T22
• T24
• T25
• T54
• Tan
• Tan/pnk
• Tan/red
• Tcc sol
• Tcc sol ctrl
• Temp sig
• To spark plugs
• Tp sens
• Trans ctl rly
• Trans temp
• Var force sol
• Vss signal
• Z11
• Z12

4.0L, Engine Performance Wiring Diagrams (2 of 3) for Jeep Grand Cherokee Laredo 2000

List of elements for 4.0L, Engine Performance Wiring Diagrams (2 of 3) for Jeep Grand Cherokee Laredo 2000:

• (eng harn, in trough near break- out for pcm)
• (eng harn, in trough near breakout for pcm)
• (eng harn, near breakout for crank- shaft position sensor) s105
• (eng harn, near breakout for fuel inj 5)
• (front body harn, in center spline, near breakout for brake lamp switch)
• (on throttle body) idle air control motor
• (under driver's seat) g300
• Automatic shut down relay
• Camshaft position sensor (on right side of eng, near oil filter)
• Crankshaft position sensor (on transmission bellhousing)
• Cruise control system
• Engine coolant temperature sensor (on thermostat housing)
• Engine oil pressure sensor (right rear of eng block)
• Fuel pump module (top of fuel tank)
• Fuel pump relay
• Fuse 10a
• Fuse 15a
• Fuse 20a
• Fuse 30a
• Hot at all times
• Hot in start or run
• Intake air temperature sensor (in intake manifold plenum)
• Junction block (behind left side of dash)
• Manifold absolute position sensor (on side of throttle body)
• No 2 drv
• No 3 drv
• No 4 drv
• No1 drv
• Power distribution center (at right front corner of eng compt, next to battery)
• S107
• S112
• S128
• S131 (in trough near breakout for pdc)
• S315
• Throttle position sensor (on throttle body)

4.0L, Engine Performance Wiring Diagrams (3 of 3) for Jeep Grand Cherokee Laredo 2000

List of elements for 4.0L, Engine Performance Wiring Diagrams (3 of 3) for Jeep Grand Cherokee Laredo 2000:

• (bottom of steering column) diagnostic junction port
• (eng harn, in breakout for oxygen sensor 2/2 downstream)
• (eng harn, in breakout for oxygen sensor)
• (eng harn, in breakout for oxygen sensors)
• (eng harn, top of eng, in fuel injector harness)
• (right rear of engine) g117
• (under left side of dash, near steering column)
• 1/1 2/1 o2 rly
• 1/2 2/2 o2 rly
• A/c pres sig
• A/c system
• Asd relay ctrl
• Asd rly out
• Bat tem sens sig
• Battery temperature sensor (below battery tray)
• Brake sw sens
• C13
• C18
• Cali
• Check engine ind
• Comp cl ctrl
• Cruise control system
• D21
• D25
• D32
• Data link connector
• Duty cycle evap/purge solenoid (on left fender side shield)
• Evap emis
• Ex cali
• Except cali
• F42
• Fuel lev sensor
• Fuel pmp rly
• Fuse 10a
• Fuse 20a
• G302 (below center console)
• Gen source
• Hot at all times
• Hot in start or run
• Instrument cluster
• Junction block (behind left side of dash)
• K106
• K107
• K151
• K21
• K226
• K25
• K251
• K29
• K31
• K51
• K52
• Leak det pmp
• Leak det pump
• Leak detection pump (below air cleaner housing)
• Nca
• O2s heater relay down- stream (cali)
• O2s heater relay up- stream (cali)
• Overdrive switch
• Oxygen sensor 1/1 upstream (fed: in exhaust downpipe, cali: in exhaust manifold front outlet)
• Oxygen sensor 1/2 downstream (fed: downstream of in line catalytic converter, cali: outlet of front mini catalytic converter)
• Oxygen sensor 2/1 upstream (cali) (in exhaust manifold rear outlet)
• Oxygen sensor 2/2 downstream (cali) (in outlet of rear mini catalytic converter)
• Pci bus
• Pnk
• Power distribution center (at right front corner of eng compt, next to battery)
• Powertrain control module (on right side of firewall)
• S104
• S106
• S108
• S110
• S111
• S129
• S130 (in breakout for pcm)
• S203
• S316
• Sci receive
• Sci transmit
• Shift interlock system
• Spd ctrl pow
• Spd ctrl sw
• T99
• Tan/red
• Torque man req
• V32
• V35
• V36
• V37
• Vac sol ctrl
• Vent sol ctrl

4.7L

4.7L, Engine Performance Wiring Diagrams (1 of 3) for Jeep Grand Cherokee Laredo 2000

List of elements for 4.7L, Engine Performance Wiring Diagrams (1 of 3) for Jeep Grand Cherokee Laredo 2000:

• (eng harn, near breakout for fuel inj 4)
• (eng harn, near breakout for fuel inj 6)
• (eng harn, near breakout for idle air control motor)
• (right side of engine)
• +5v
• C24
• Capacitor
• Ckp sens
• Cmp sens
• Coil drv 1
• Coil drv 2
• Coil drv 3
• Coil drv 4
• Coil drv 5
• Coil drv 6
• Coil drv 7
• Coil drv 8
• Coil on plug 1
• Coil on plug 2
• Coil on plug 3
• Coil on plug 4
• Coil on plug 5
• Coil on plug 6
• Coil on plug 7
• Coil on plug 8
• Cooling fans system
• Ect sens
• F991
• Fan rly ctrl
• Fuel injectors
• Fuse 10a
• Fused b+
• G120
• G60
• Gen field drv
• Generator
• Ground
• Hot at all times
• Iac 1 drv
• Iac 2 drv
• Iac 3 drv
• Iac 4 drv
• Iat sens
• Ign sw out
• Inj 1 drv
• Inj 2 drv
• Inj 3 drv
• Inj 4 drv
• Inj 5 drv
• Inj 6 drv
• Inj 7 drv
• Inj 8 drv
• K11
• K12
• K13
• K14
• K141
• K17
• K18
• K20
• K21
• K22
• K24
• K241
• K341
• K38
• K39
• K40
• K41
• K44
• K58
• K59
• K60
• K91
• K92
• K93
• K94
• K95
• K96
• K97
• K98
• Map sens
• Nca
• O2 sens 1/1
• O2 sens 1/2
• O2 sens 2/1
• O2 sens 2/2
• Oil pres sens
• P/n switch
• Power distribution center (at right front corner of eng compt, next to battery)
• Powertrain control module (on right side of firewall)
• S109
• S118
• S121
• S124
• Sens ground
• T24
• Tan
• Tan/pnk
• Tan/red
• Tp sens
• Transmission, anti-lock brake and instrument cluster systems (speed signal)
• Vss signal
• Z11
• Z12

4.7L, Engine Performance Wiring Diagrams (2 of 3) for Jeep Grand Cherokee Laredo 2000

List of elements for 4.7L, Engine Performance Wiring Diagrams (2 of 3) for Jeep Grand Cherokee Laredo 2000:

• (eng harn, in breakout for crank- shaft position sensor) s119
• (eng harn, in trough near breakout for pcm)
• (eng harn, near breakout for fuel inj 7) s107
• (eng harn, near breakout for oxygen sensor)
• (in break- out to tp sensor) s120
• (not used)
• (on throttle body) idle air control motor
• (under driver's seat) g300
• Automatic shut down relay
• Camshaft position sensor (front top of right cylinder head)
• Crankshaft position sensor (above starter motor)
• Cruise control system
• Engine coolant temperature sensor (near front of intake manifold)
• Engine oil pressure sensor (above oil filter)
• Fuel pump module (top of fuel tank)
• Fuel pump relay
• Fuse 10a
• Fuse 15a
• Fuse 20a
• Fuse 30a
• Hot at all times
• Hot in start or run
• Intake air temperature sensor (in intake manifold plenum)
• Junction block (behind left side of dash)
• Manifold absolute position sensor (front of intake manifold)
• No 2 drv
• No 3 drv
• No 4 drv
• No1 drv
• Power distribution center (at right front corner of eng compt, next to battery)
• S105
• S116
• S122
• S128
• S315
• Throttle position sensor (on throttle body)
• Transmission control system
• Transmission solenoid assembly (on transmission valve body)

4.7L, Engine Performance Wiring Diagrams (3 of 3) for Jeep Grand Cherokee Laredo 2000

List of elements for 4.7L, Engine Performance Wiring Diagrams (3 of 3) for Jeep Grand Cherokee Laredo 2000:

• (bottom of steering column) diagnostic junction port
• (eng harn, in breakout for fuel inj 8) s112
• (eng harn, near breakout for oxygen sensor)
• (eng harn, near breakout for oxygen sensors)
• (eng harn, near breakout for pcm)
• (right rear of engine) g117
• 1/1 2/1 o2 rly
• 1/2 2/2 o2 rly
• A/c pres sig
• A/c system
• Asd relay ctrl
• Asd rly out
• Bat tem sens sig
• Battery temperature sensor (below battery tray)
• Brake sw sens
• C13
• C18
• Cali
• Charging system
• Check engine ind
• Ckp sens sig
• Comp cl ctrl
• Cruise control system
• D21
• D25
• D32
• Data link connector (under left
• Duty cycle evap/purge solenoid (on left fender side shield)
• Evap emis
• Except calif
• F42
• Fuel lev sensor
• Fuel pmp rly
• Fuse 10a
• Fuse 20a
• Gen source
• Hot at all times
• Hot in start or run
• Instrument cluster
• Junction block (behind left side of dash)
• K106
• K107
• K151
• K21
• K22
• K226
• K24
• K25
• K251
• K29
• K31
• K51
• K52
• Leak det pmp
• Leak det pump
• Leak detection pump (below air cleaner housing)
• Nca
• O2s heater relay down- stream (cali)
• O2s heater relay up- stream (cali)
• Oxygen sensor 1/1 upstream (below left exhaust manifold, in downpipe)
• Oxygen sensor 1/2 downstream (fed: downstream of in-line catalytic converter, cali: in outlet of front mini catalytic converter)
• Oxygen sensor 2/1 upstream (cali) (below right exhaust manifold, in downpipe)
• Oxygen sensor 2/2 downstream (cali) (in outlet of right mini catalytic converter)
• Pci bus
• Pnk
• Power distribution center (at right front corner of eng compt, next to battery)
• Powertrain control module (on right side of firewall)
• S106
• S108
• S110
• S125 (eng harn, at breakout for pcm)
• S129
• S130 (eng harn, in breakout for pcm)
• S131 (eng harn, in trough near breakout for pdc)
• S316
• Sci receive
• Sci transmit
• Sensor ground
• Shift interlock system
• Side of dash, near steering column)
• Spd ctrl pow
• Spd ctrl sw
• T10
• T99
• Tan/red
• Torque man req
• Torque req
• Tp sens sig
• Transmission control module (on right inner fender)
• V32
• V35
• V36
• V37
• Vac sol ctrl
• Vent sol ctrl