ENGINE PERFORMANCE – Jeep Wrangler Sahara 1999 – SYSTEM WIRING DIAGRAMS

ENGINE PERFORMANCE

2.5L

2.5L, Engine Performance Wiring Diagrams (1 of 3) for Jeep Wrangler Sahara 1999

List of elements for 2.5L, Engine Performance Wiring Diagrams (1 of 3) for Jeep Wrangler Sahara 1999:

• (eng harn, near breakout for park/ neutral position switch)
• (eng harn, near breakout to camshaft position sensor)
• (near pdc)
• (on left side of transmission) park/neutral position switch
• (rear of engine)
• (right side of eng) ignition coil
• A/t
• A10
• A11
• A12
• A13
• A14
• A15
• A16
• A17
• A18
• A19
• A20
• A21
• A22
• A23
• A24
• A25
• A26
• A27
• A28
• A29
• A30
• A31
• A32
• Automatic shutdown relay
• B10
• B11
• B12
• B13
• B14
• B15
• B16
• B17
• B18
• B19
• B20
• B21
• B22
• B23
• B24
• B25
• B26
• B27
• B28
• B29
• B30
• B31
• B32
• Cam pos sns
• Camshaft position sensor
• Coil driver
• Crnk pos sns
• Distributor
• Dnstrm ho2s
• Ect sens sig
• Engine oil pressure sensor (right side of eng block)
• Engine starter motor relay
• Exterior lights system (back-up lamps)
• F15
• Fuel injectors
• Fuel pump relay
• Fuse 10a
• Fuse 20a
• Fuse 30a
• Fused b(+)
• G117 (right rear of eng block)
• G117 (right rear of engine block)
• G60
• Gen field drv
• Ground
• Headlights system
• Hot at all times
• Iat sens sig
• Idle air 1
• Idle air 2
• Idle air 3
• Idle air 4
• Ign power
• Inj 1 driver
• Inj 2 driver
• Inj 3 driver
• K10
• K11
• K12
• K13
• K14
• K141
• K167
• K19
• K20
• K21
• K22
• K24
• K39
• K40
• K41
• K44
• K59
• K60
• M/t
• Map sens sig
• Oil press sns
• P/n
• P/s switch
• Pnp sw sens
• Power distribution center (on right side of eng compt, on inner fender panel)
• Powertrain control module (in right rear of eng compt, on firewall)
• S101
• S123
• S126 (right rear of cylinder head)
• S128 (between breakout to injectors 2 and 3)
• S130
• S131
• S132
• S134
• S135
• Sensor grd
• Starting/ charging system
• T23
• T41
• Tan
• Tcc ctrl
• Torque converter clutch solenoid (in transmission valve body)
• Tps sens in
• Upstrm ho2s
• Vehicle speed sensor (on extension housing of transfer case)
• Vss in
• Z12

2.5L, Engine Performance Wiring Diagrams (2 of 3) for Jeep Wrangler Sahara 1999

List of elements for 2.5L, Engine Performance Wiring Diagrams (2 of 3) for Jeep Wrangler Sahara 1999:

• (eng harn, at right side of transmission)
• (eng harn, near breakout for 14-pin black connector on dash panel)
• (eng harn, near breakout for iac motor) s127
• (eng harn, near near breakout for inj 6) s129
• (rear of engine) s124
• (right rear of eng block)
• Crankshaft position sensor (at left rear side of engine block)
• Cruise control system
• Daytime running lamp module (in rear of eng compt, on firewall)
• Driver motor 1
• Driver motor 2
• Driver motor 3
• Driver motor 4
• Engine coolant temperature sensor (on thermostat housing)
• Fuel pump module (on fuel tank)
• Fuse 11 10a
• Fuse 12 10a
• Fuse block (under right side of dash)
• G117
• G117 (right rear of engine block)
• Grd sensor
• Heated oxygen sensor 1/1 upstream (on exhaust downpipe)
• Heated oxygen sensor 1/2 downstream (on rear of catalytic converter)
• Hot in run or start
• Idle air control motor (on right side of throttle body assembly)
• Intake air temperature sensor (on intake manifold plenum, near throttle body)
• Manifold absolute pressure sensor (on side of throttle body assembly)
• Nca
• S102
• S107 (right center of dash panel)
• S132
• S133
• S147
• Signal sensor

2.5L, Engine Performance Wiring Diagrams (3 of 3) for Jeep Wrangler Sahara 1999

List of elements for 2.5L, Engine Performance Wiring Diagrams (3 of 3) for Jeep Wrangler Sahara 1999:

• (i/p harn, near grommet breakout for windshield wiper motor)
• (left side of steering column) brake shift interlock solenoid
• A/c comp rly
• A/c compressor clutch relay
• A/c cycling switch
• A/c sw output
• A/c sw sense
• A/c-heater control
• A142
• Asd relay sens
• Auto sht rly
• Batt temp sens
• Battery temperature sensor (on bottom of battery tray)
• Brake lamp switch (top of brake pedal bracket)
• Brake sw in
• C10
• C11
• C12
• C13
• C14
• C15
• C16
• C17
• C18
• C19
• C20
• C21
• C22
• C23
• C24
• C25
• C26
• C27
• C28
• C29
• C30
• C31
• C32
• C90
• Ccd bus (+)
• Ccd bus (-)
• Check engine warning indicator
• Controller anti-lock brake (top left of dash panel)
• Cruise control system
• Cruise feed
• Cruise sw in
• Cruise vac sol
• Cruise vnt sol
• D20
• D21
• Data link connector (partial) (bottom left side of dash)
• Duty cycle evap/purge solenoid (on left fender side shield)
• Evap sol drvr
• Fuel level sens
• Fuel pmp rly
• Fuse 10 10a
• Fuse block (under right side of dash)
• G117 (right rear of engine block)
• G200 (left kick panel)
• Generator
• Hot in run or start
• Instrument cluster
• K105
• K106
• K118
• K226
• K29
• K31
• K51
• K52
• K72
• Leak detect pmp
• Leak detect sw
• Leak detection module (left side of eng compt, near evap canister)
• Pnk
• Power steering pressure switch (behind power steering pump)
• Powertrain control module (in right rear of eng compt, on firewall)
• S132
• S302
• S303
• Sci receive
• Sci transmit
• Starting/charging system
• Tan/red
• Throttle position sensor (on throttle body assembly)
• V32
• V35
• V36
• V37

4.0L

4.0L, Engine Performance Wiring Diagrams (1 of 3) for Jeep Wrangler Sahara 1999

List of elements for 4.0L, Engine Performance Wiring Diagrams (1 of 3) for Jeep Wrangler Sahara 1999:

• (between breakout for inj 2 & 3)
• (eng harn, near breakout to camshaft position sensor)
• (near pdc)
• (on left side of transmission) park/neutral position switch
• (rear of engine)
• (right rear of cylinder head)
• (right rear of eng block)
• (right rear of eng compt)
• (right side of eng) ignition coil
• A/t
• A10
• A11
• A12
• A13
• A14
• A15
• A16
• A17
• A18
• A19
• A20
• A21
• A22
• A23
• A24
• A25
• A26
• A27
• A28
• A29
• A30
• A31
• A32
• Automatic shutdown relay
• B10
• B11
• B12
• B13
• B14
• B15
• B16
• B17
• B18
• B19
• B20
• B21
• B22
• B23
• B24
• B25
• B26
• B27
• B28
• B29
• B30
• B31
• B32
• Cam pos sns
• Camshaft position sensor
• Coil driver
• Crnk pos sns
• Distributor
• Dnstrm ho2s
• Ect sens sig
• Engine starter motor relay
• Exterior lights system (back-up lamps)
• F15
• Fuel injectors
• Fuel pump relay
• Fuse 10a
• Fuse 20a
• Fuse 30a
• Fused b(+)
• G117
• G60
• Gen field drv
• Ground
• Headlights system
• Hot at all times
• Iat sens sig
• Idle air 1
• Idle air 2
• Idle air 3
• Idle air 4
• Ign power
• Inj 1 driver
• Inj 2 driver
• Inj 3 driver
• Inj 4 driver
• Inj 5 driver
• Inj 6 driver
• K11
• K12
• K13
• K14
• K141
• K15
• K16
• K167
• K19
• K20
• K21
• K22
• K24
• K39
• K40
• K41
• K44
• K59
• K60
• M/t
• Map sens sig
• Oil press sns
• P/n
• Pnp sw sens
• Power distribution center (on right side of eng compt, on inner fender panel)
• Powertrain control module (in right rear of eng compt, on firewall)
• S101
• S123
• S126
• S128
• S131
• S132
• S134
• S135 (eng harn, near breakout for park/ neutral position switch)
• Sensor grd
• Starting/ charging system
• T23
• T41
• Tan
• Tcc ctrl
• Torque converter clutch solenoid (in transmission valve body)
• Tps sens in
• Upstrm ho2s
• Vehicle speed sensor (on extension housing of transfer case)
• Vss in
• Z12

4.0L, Engine Performance Wiring Diagrams (2 of 3) for Jeep Wrangler Sahara 1999

List of elements for 4.0L, Engine Performance Wiring Diagrams (2 of 3) for Jeep Wrangler Sahara 1999:

• (eng harn, at right side of transmission)
• (eng harn, near breakout for 14-pin black connector on dash panel)
• (eng harn, near breakout for iac motor)
• (eng harn, near near breakout for inj 6)
• (right rear of eng block)
• Crankshaft position sensor (at left rear side of engine block)
• Cruise control system
• Daytime running lamp module (in rear of eng compt, on firewall)
• Engine coolant temperature sensor (on thermostat housing)
• Engine oil pressure sensor (right side of eng block)
• Fuel pump module (on fuel tank)
• Fuse 11 10a
• Fuse 12 10a
• Fuse block (under right side of dash)
• G117
• G117 (right rear of engine block)
• Heated oxygen sensor 1/1 upstream (on exhaust downpipe)
• Heated oxygen sensor 1/2 downstream (on rear of catalytic converter)
• Hot in run or start
• Idle air control motor (on right side of throttle body assembly)
• Intake air temperature sensor (on intake manifold plenum, near throttle body)
• Manifold absolute pressure sensor (on side of throttle body assembly)
• Motor 1 driver
• Motor 2 driver
• Motor 3 driver
• Motor 4 driver
• Nca
• S102
• S107 (right center of dash panel)
• S124 (rear of engine)
• S127
• S129
• S132
• S133
• S147
• Sensor grd
• Sensor signal

4.0L, Engine Performance Wiring Diagrams (3 of 3) for Jeep Wrangler Sahara 1999

List of elements for 4.0L, Engine Performance Wiring Diagrams (3 of 3) for Jeep Wrangler Sahara 1999:

• (i/p harn, near grommet breakout for windshield wiper motor)
• (left side of steering column) brake shift interlock solenoid
• A/c comp rly
• A/c compressor clutch relay
• A/c cycling switch
• A/c sw output
• A/c sw sense
• A/c-heater control
• A142
• Asd relay sens
• Auto sht rly
• Batt temp sens
• Battery temperature sensor (on bottom of battery tray)
• Brake lamp switch (top of brake pedal bracket)
• Brake sw in
• C10
• C11
• C12
• C13
• C14
• C15
• C16
• C17
• C18
• C19
• C20
• C21
• C22
• C23
• C24
• C25
• C26
• C27
• C28
• C29
• C30
• C31
• C32
• C90
• Ccd bus (+)
• Ccd bus (-)
• Check engine warning indicator
• Controller anti-lock brake (top left of dash panel)
• Cruise control system
• Cruise feed
• Cruise sw in
• Cruise vac sol
• Cruise vnt sol
• D20
• D21
• Data link connector (partial) (bottom left side of dash)
• Duty cycle evap/purge solenoid (on left fender side shield)
• Evap sol drvr
• Fuel level sens
• Fuel pmp rly
• Fuse 10 10a
• Fuse block (under right side of dash)
• G200 (left kick panel)
• Generator
• Hot in run or start
• Instrument cluster
• K105
• K106
• K118
• K226
• K29
• K31
• K51
• K52
• K72
• Leak detect pmp
• Leak detect sw
• Leak detection module (left side of eng compt, near evap canister)
• Pnk
• Powertrain control module (in right rear of eng compt, on firewall)
• S302
• S303
• Sci receive
• Sci transmit
• Starting/charging system
• Tan/red
• Throttle position sensor (on throttle body assembly)
• V32
• V35
• V36
• V37