ENGINE PERFORMANCE – Jeep Wrangler Unlimited Sahara 2008 – SYSTEM WIRING DIAGRAMS

ENGINE PERFORMANCE

3.8L

3.8L, Engine Performance Wiring Diagram (1 of 5) for Jeep Wrangler Unlimited Sahara 2008

List of elements for 3.8L, Engine Performance Wiring Diagram (1 of 5) for Jeep Wrangler Unlimited Sahara 2008:

• (at rear of engine) oxygen sensor 1/2
• (at rear of engine) oxygen sensor 2/2
• (on engine)
• (on engine) s121
• 87a
• A209
• A804
• Asd rly out
• B (+)
• Bus (+)
• Bus (-)
• Camshaft position sensor (on engine)
• Can c bus (+)
• Can c bus (-)
• Computer data lines system
• D64
• D65
• Egr valve assembly (on engine)
• Electronics
• Eop sig
• F202
• F342
• F856
• Fuel injector
• Fuse m28 10a
• Fuse m3 10a
• Fused b(+)
• G100 (on battery cable)
• G104 (on engine harness)
• Gen sense
• Gnd
• Ground
• Hot at all times
• Ign sw out
• Ign sw out (unlk-run- start)
• K141
• K243
• K904
• Map sensor (on engine)
• O2 1/2 sig
• O2 2/2 sig
• O2 rtn (dn)
• Powertrain control module (at left side of engine compartment)
• Red
• Rly out
• Run/ start relay
• Run/ start rly ctrl
• S102
• S122 (on engine)
• S128
• S131 (on engine)
• S143
• Totally integrated power module (at passenger side of engine compt)
• Z903

3.8L, Engine Performance Wiring Diagram (2 of 5) for Jeep Wrangler Unlimited Sahara 2008

List of elements for 3.8L, Engine Performance Wiring Diagram (2 of 5) for Jeep Wrangler Unlimited Sahara 2008:

• (at fuel tank) fuel pump module
• (on engine) s138
• 87a
• A/c clutch ctrl
• Auto shut down relay
• C13
• Ckp sig
• Cmp sig
• Coil 1 ctrl
• Coil 2 ctrl
• Coil 3 ctrl
• Ect sig
• Egr ctrl
• Egr sig
• Electronics
• Engine coolant temperature sensor (on engine)
• Etc motor (+)
• Etc motor (-)
• F855
• Fuel level signal
• Fuel pump ctrl
• Fuel pump output
• Fuse m19 30a
• Fuse m25 20a
• G103 (at passenger side of engine compt)
• Gen field ctrl
• Gen sns
• Generator
• Hot at all times
• Iat sig
• Ignition coil (on engine)
• Inj 1 ctrl
• Inj 2 ctrl
• Inj 3 ctrl
• Inj 4 ctrl
• Inj 5 ctrl
• Inj 6 ctrl
• K11
• K12
• K122
• K124
• K125
• K126
• K13
• K14
• K17
• K18
• K19
• K199
• K21
• K22
• K24
• K31
• K34
• K35
• K38
• K41
• K42
• K43
• K44
• K58
• K900
• K902
• K91
• K922
• K942
• K99
• Ks return
• Ks sig
• Map sig
• O2 1/1 htr ctrl
• O2 1/1 sig
• O2 2/1 htr ctrl
• O2 2/1 sig
• O2 rtn (up)
• Oil pressure switch (on engine)
• Powertrain control module (at left side of engine compt)
• S169
• S308 s307 (base)
• Sens gnd
• Sensor gnd
• Totally integrated power module (at passenger side of engine compt)
• Tp 1 sig
• Tp sens gnd
• Tp sig 2

3.8L, Engine Performance Wiring Diagram (3 of 5) for Jeep Wrangler Unlimited Sahara 2008

List of elements for 3.8L, Engine Performance Wiring Diagram (3 of 5) for Jeep Wrangler Unlimited Sahara 2008:

• (on engine)
• (on engine) s137
• C1 p/n
• Crankshaft position sensor (on engine)
• G104 (on engine harness)
• Input speed sensor (on transmission)
• Intake air temperature sensor (on engine)
• Knock sensor (on engine)
• Output speed sensor (on transmission)
• Oxygen sensor 1/1 (at rear of engine)
• Oxygen sensor 2/1 (at rear of engine)
• S132 (on engine)
• S133
• Throttle body (on engine)
• Transmission range sensor (on transmission)
• Transmission temperature sensor

3.8L, Engine Performance Wiring Diagram (4 of 5) for Jeep Wrangler Unlimited Sahara 2008

List of elements for 3.8L, Engine Performance Wiring Diagram (4 of 5) for Jeep Wrangler Unlimited Sahara 2008:

• (on engine) s136
• (on transmission) transmission solenoid/trs assembly
• 2/4 ctrl
• 2/4 press sig
• 2/4 press sw
• Electronics
• Fuse j18 20a
• G100 (on battery cable)
• Ground
• Hot at all times
• Input speed sig
• L/r ctrl
• L/r press sig
• L/r press sw
• Line press ctrl
• Line press sig
• Line pressure sensor/variable force solenoid assembly
• Od ctrl
• Od press sig
• Od press sw
• Out speed sig
• Powertrain control module (at left side of engine compt)
• S143
• Sens gnd
• T118
• T13
• T14
• T15
• T16
• T19
• T20
• T38
• T41
• T42
• T47
• T50
• T52
• T54
• T59
• T60
• Totally integrated power module (at passenger side of engine compt)
• Trans ctrl
• Trans ctrl out
• Transmission control relay
• Transmission ctrl
• Trs t1 sig
• Trs t3 sig
• Trs t41 sig
• Trs t42 sig
• Tts sig
• Ud ctrl
• Z903

3.8L, Engine Performance Wiring Diagram (5 of 5) for Jeep Wrangler Unlimited Sahara 2008

List of elements for 3.8L, Engine Performance Wiring Diagram (5 of 5) for Jeep Wrangler Unlimited Sahara 2008:

• (at base of pedal) accelerator pedal position sensor
• (at rear of engine compt)
• (except base)
• A/c cltch ctrl
• App 1 sens gnd
• App 1 sig
• App 2 sens gnd
• App 2 sig
• Asd rly ctrl
• B15
• B16
• Brake sig 1
• Brake sig 2
• C13
• Clutch
• Clutch interlk sig
• Clutch interlock switch (m/t)
• Esm sig
• Evap purge ctrl
• Evap purge rtn
• Evap system monitor switch (at evap canister near fuel tank)
• Evap/purge solenoid (at right rear of engine compt)
• F342
• Fuel pmp ctrl
• Fused asd rly out
• G103 (at passenger side of engine compt)
• Gnd
• Interlk switch
• K107
• K167
• K23
• K29
• K299
• K31
• K399
• K400
• K51
• K52
• K70
• O2 1/2 htr ctrl
• O2 2/2 htr ctrl
• Pnk
• Powertrain control module (at left side of engine compt)
• S/c rtn
• S/c sig 1
• S/c sig 2
• S308 s307 (base)
• Sc sig 2
• Speed control switch
• Starter rly ctrl
• Starting/ charging system
• Steering control module
• Stop lamp switch (at base of brake pedal)
• T141
• T752
• V71
• V72
• V937