ENGINE PERFORMANCE – Jeep Cherokee Classic 1999 – SYSTEM WIRING DIAGRAMS

ENGINE PERFORMANCE

2.5L

2.5L, Engine Performance Wiring Diagrams (1 of 3) for Jeep Cherokee Classic 1999

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

• (eng harn, near fuel injector harness)
• (eng harn, near fuel injector harness) s113
• (eng harn, rear of eng compt)
• (on transmission) park/neutral position switch
• (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
• A61
• 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 (on engine block, near generator)
• Engine starter motor relay
• Exterior lights system
• F12
• Fuel injectors
• Fuel pump relay
• Fuse 15a
• Fuse 20a
• Fuse 25a
• Fused b(+)
• G117 (right rear of eng, near starter)
• 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
• K54
• K59
• K60
• M/t
• Map sens sig
• Oil press sns
• P/n
• P/s switch
• Pnp (or gnd)
• Power distribution center (on right side of eng compt, on inner fender panel)
• Powertrain control module (left fender side shield)
• Red
• S107
• S108 (eng harn, rear of engine)
• S109
• S120
• S137
• S161
• Sensor grd
• Starting/ charging system
• T41 (or z1)
• Tan
• Tcc ctrl
• Tcc drv
• Torque converter clutch solenoid (in transmission valve body)
• Tps sens in
• Upstrm ho2s
• Vehicle speed sensor (on transmission extension housing)
• Vss in
• Z12

2.5L, Engine Performance Wiring Diagrams (2 of 3) for Jeep Cherokee Classic 1999

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

• (at inlet of catalytic converter) (upstream)
• (eng harn, between breakout for inj. 3 & 5)
• (eng harn, near breakout for alternator ground)
• (eng harn, near breakout for powertrain control module)
• (left rear of eng, on cylinder head)
• (on top of power brake booster) s108
• (on transmission valve body) torque converter clutch solenoid
• (to rear of catalytic converter, in exhaust pipe) (downstream)
• Cruise control system (clockspring)
• Engine coolant temperature sensor (near rear of generator, in water jacket, at front of intake)
• Fuel pump module (top of fuel tank)
• Fuse 17/18 20a
• Fuse 19/20 10a
• Fuse 20a
• G114
• G114 (left rear of eng, on cylinder head)
• G305 (right side body)
• Generator
• Heated oxygen sensor
• Hot at all times
• Idle air control motor (on side of throttle body)
• Intake air temperature sensor (on front/side of intake manifold)
• Manifold absolute pressure sensor (on throttle body assembly)
• Nca
• Oil pressure switch (on rear of eng, to right of distributor)
• Power distribution center
• S101
• S121
• S126
• S127
• S129
• S132
• S135

2.5L, Engine Performance Wiring Diagrams (3 of 3) for Jeep Cherokee Classic 1999

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

• (behind kick panel)
• (near combination flasher)
• A/c comp rly
• A/c compressor control relay
• A/c low pressure switch
• A/c select sig
• A/c switch
• A/c-heater control switch
• A142
• Asd relay sens
• Auto sht rly
• 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
• Cool fan ctrl
• Cooling fans system
• Cruise control system
• Cruise feed
• Cruise sw in
• Cruise vac sol
• Cruise vnt sol
• D20
• D21
• Data link connector (partial) (bottom of knee bolster, left side of steering column)
• Duty cycle evap/purge solenoid (right side of firewall)
• Evap leak detection pump (right front corner of eng compt)
• Evap sol drvr
• Fuel level sens
• Fuel pmp rly
• Fuse 9 10a
• G117 (right rear of eng, near starter)
• Generator
• Hot in run or start
• Instrument cluster
• Junction block
• K105
• K106
• K226
• K29
• K31
• K51
• K52
• K72
• Leak detect pump
• Leak detect sw
• Pnk
• Power steering pressure switch (in power steering high pressure hose)
• Powertrain control module (left side fender shield)
• S107
• S13
• S216
• S238
• S239
• Sci receive
• Sci transmit
• Starting/charging system
• Stop lamp switch
• Tan/red
• Throttle position sensor (on throttle body)
• V32
• V35
• V36
• V37

4.0L

4.0L, Engine Performance Wiring Diagrams (1 of 3) for Jeep Cherokee Classic 1999

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

• (a/t only)
• (eng harn, rear of eng compt)
• (engine harness, injector harness) s113
• 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
• A61
• 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 (on right side of eng, near oil filter)
• Engine starter motor relay
• F12
• Fuel pump relay
• Fuse 15a
• Fuse 20a
• Fuse 25a
• Fused b(+)
• G117 (right rear of eng, near starter)
• 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
• Ignition coil (front of engine)
• Inj 1 driver
• Inj 2 driver
• Inj 3 driver
• Inj 4 driver
• Inj 5 driver
• Inj 6 driver
• K10
• 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/s switch
• Pnp
• Power distribution center (on right side of eng compt, on inner fender panel)
• Powertrain control module (left fender side shield)
• Red
• S107
• S108 (engine harness, rear of engine)
• S109 (engine harness, near fuel inj harn)
• S136
• S137
• Sensor grd
• Starting/ charging system
• T41
• Tan
• Tps sens in
• Trans- mission control module
• Upstrm ho2s
• Vehicle speed sensor (on transmission extension housing)
• Vss in
• Z12

4.0L, Engine Performance Wiring Diagrams (2 of 3) for Jeep Cherokee Classic 1999

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

• (eng harn, near fuel inj harness) s111
• (eng harn, near fuel inj harness) s114
• (engine harness, near fuel inj harn) s110
• (engine harness, near map sensor) s115
• (engine harness, rear of engine compartment) s138
• (near left taillamp)
• Crankshaft position sensor (on left side of transmission bellhousing)
• Cruise control system
• 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 10 15a
• Fuse 11 20a
• Fuse 25 15a
• G117 (right rear of engine)
• G402
• Grd sensor
• Heated oxygen sensor 1/1 (upstream) (left side of eng comt, on exhaust pipe)
• Heated oxygen sensor 1/2 (downstream) (on rear of catalytic converter)
• Hot in run
• Hot in run or start
• Idle air control motor (on throttle body assembly)
• Intake air temperature sensor (on intake manifold, near throttle body)
• Junction block (behind right kick panel)
• Manifold absolute pressure sensor (on throttle body assembly)
• Nca
• S107
• S12
• S130
• S159
• S217
• S309
• Signal sensor
• Transmission control module (under center of dash panel)

4.0L, Engine Performance Wiring Diagrams (3 of 3) for Jeep Cherokee Classic 1999

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

• (eng harn, near fuel injector harn)
• (near combination flasher)
• (not used)
• A/c comp rly
• A/c compressor control relay
• A/c high pressure switch
• A/c select sig
• A/c switch
• A/c-heater control switch
• A/t
• A142
• Anti- lock brakes system
• Asd relay sens
• Auto sht rly
• Batt temp sens
• Battery temperature sensor (under battery, attached to battery tray)
• 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 ind.
• Cool fans ctrl
• Cooling fans system
• Cruise control system
• Cruise feed
• Cruise sw in
• Cruise vac sol
• Cruise vnt sol
• D20
• D21
• Data link connector (partial) (bottom of knee bolster, left side of steering column)
• Duty cycle evap/purge solenoid (on right side of firewall)
• Evap leak detection pump (right front corner of eng compt)
• Evap sol drvr
• Extended idle switch (police package only)
• Fuel pmp rly
• Fuse 10a
• G201 (near glove box lamp switch)
• Generator
• Hot in run or start
• Instrument cluster
• Interior lights system
• Junction block (behind right kick panel)
• K105
• K106
• K118
• K29
• K31
• K51
• K52
• K72
• Leak detect pump
• Leak detect sw
• Low fuel sens
• M/t
• Other
• Pnk
• Police package
• Powertrain control module (left side fender shield)
• S112
• S13
• S139 (engine harn, left rear of engine compartment)
• S208
• S216
• S238
• S239
• Sci receive
• Sci transmit
• Starting/ charging system
• Stop lamp switch
• Tan/red
• Throttle position sensor (on throttle body assembly)
• Trans- missions system
• Transmissions system
• V32
• V33
• V35
• V36