1983 Jeep CJ-8 Scrambler
Engine & Harness from a 1997 XJ 4.0 Auto
#1


Right side, behind dipstick
C107
Pin Color Stripe Guage Code Purpose
1 Dk Green Orange 18 A142 ASD Relay Output (20A)
PCM, Coil, and Injectors
2 Green 18 K20 Generator Field Driver (-)
3 Brown Yellow 20 K167 Sensor Ground
4 White Orange 20 G7 Vehicle Speed Sensor Signal
(Daytime Running Lamp Module)
5 Black White 20 T41 Neutral Safety Switch (Ground)
6 Orange Dk Blue 20 K22 Throttle Position Sensor
(A/T Only)
7 Dk Green White 20 F142 ASD Relay Output (15A)
Oxygen Sensors
8 Black Red 20 G107 4WD Indicator
9 Black Tan 18 Z12 Ground
10 Dk Blue White 18 F12 Fused Ignition Switch Output
(Run/Start)
11 Grey 18 K78 Extended Idle Switch
(Police Package Only)
14 Dk Green Black 16 A61 Fused B(+) (15A)

Right side, long harness
4WD Switch
Pin Color Stripe Gauge Purpose
1 Black Red 18 4WD Indicator
2 Black 18 Ground

Battery connectors and such
C108-Connected to Power Distribution Center
Pin Color Stripe Gauge Code Purpose
1 Lt Green Black 14 T40 Starter
2 Dk Green Orange 18 K72 Generator Field Source
(+)
3 Dk Green 18 K20 Generator Field Driver
(-)
4 Dk Blue Black 16 C3 AC Relay Output

Left side next behind throttle body
Crankshaft Position Sensor (near Fuel Rail)
Pin Color Stripe Gauge Code Purpose
1 Grey Black 18 K24 Crankshaft Position Sensor
2 Brown Orange 20 K167 Sensor Ground
3 Orange 20 K7 5 Volt

Left side on pan rail
C146-Upstream O2 Sensor
(left, Exhaust Manifold)
Pin Color Stripe Gauge Code Purpose
1 Dk Green White 20 F142 ASD Relay Output
2 Black 18 Z1 Ground
3 Brown Yellow 20 K167 Sensor Return
C150-A4 (PCM)
4 Black Dk Green 18 K41 Sensor Signal
C150-A24 (PCM)

Right side, long harness
Vehicle Speed Sensor (on trans.)
Pin Color Stripe Gauge Code Purpose
1 Violet Orange 18 K6 5 Volt Supply
2 Brown Yellow 18 K167E Sensor Return
3 White Orange 18 G7 Vehicle Speed Sensor

Right side, long harness
C156-Downstream Heated O2Sensor
(catalytic converter)
Pin Color Stripe Gauge Code Purpose
1 Dk Green White 20 K142 ASD Relay Output
2 Black 18 Z1 Ground
3 Brown Yellow 18 K167 Sensor Return
C150-A4 (PCM)
4 Tan White 18 K141 Sensor Signal
C150-A25 (PCM)


Left side, long harness
Powertrain Control Module - Black
Pin Color Stripe Gauge Code Purpose
A2 Dk Blue White 18 F12 Fused Ignition Switch Output
A4 Brown Yellow 18 K167 Sensor Ground
A6 Black White 18 Z1 Ground (Manual Transmission)
A7 Grey 18 K19 Ignition Coil Driver
A8 Grey Black 18 K24 CKP Sensor Signal
A10 Yellow Black 18 K60 Idle Air Control Driver No. 2
A11 Brown White 18 K40 Idle Air Control Driver No. 3
A12 Grey 18 K78 Extended Idle Switch (Police Only)
A15 Black Red 18 K21 IAT Sensor Signal
A16 Tan Black 18 K2 ECT Sensor Signal
A17 Orange 18 K7 5 Volt Supply
A18 Tan Yellow 18 K44 CMP Sensor Signal
A19 Grey Red 18 K39 Idle Air Control Driver No. 1
A20 Violet Black 18 K59 Idle Air Control Driver No. 4
A22 Dk Green Black 18 A61 Fused (B+)
A23 Orange Black 18 K22 TP Sensor
A24 Black Dk Green 18 K41 O2 Sensor Upstream
Signal C146-4
A25 Tan White 18 K141 O2 Sensor Downstream
Signal C156-4
A27 Dk Green Red 18 K1 MAP Sensor Signal
A31 Black Tan 14 Z12 Power Ground
A32 Black Tan 14 Z12 Power Ground


Left side, long harness
Powertrain Control Module - White
Pin Color Stripe Gauge Code Purpose
B4 White Dk Blue 18 K11 Injector #1
B5 Yellow White 18 K13 Injector #3
B6 Pink Black 18 K15 Injector #5
B10 Dk Green 18 K20 Generator Field Driver (-)
B12 Lt Green Black 18 K16 Injector #6
B15 Tan 18 K12 Injector #2
B16 Lt Blue Brown 18 K14 Injector #4
B23 Grey Yellow 18 G60 Oil Pressure Sensor Circuit
B27 White Orange 18 G7 VSS Circuit
B31 Violet Orange 18 K6 5 Volt Supply
   
Powertrain Control Module - Grey
Pin Color Stripe Gauge Code Purpose
C1 Dk Blue Orange     A/C Clutch Relay Control
C2 Dk Blue Pink     Fan Relay Control
C3 Dk Blue Yellow     ASD Relay Control
C4 Tan Red     S/C Vacuum Solenoid Control
C5 Lt Green Red     S/C Vent Solenoid Control
C10 White Dk Green     Leak Detection Pump Control
C11 Yellow Red     S/C Power Supply
C12 Dk Green Orange     ASD Relay Output
C13        
C14 White Orange     Leak Detection Pump Sense
C15 Pink Yellow     Battery Temp Sensor Signal
C18        
C19 Brown     Fuel Pump Relay Control
C20 Pink Black     EVAP Soleniod Control
C22 Dk Blue White     A/C Request Signal
C23 Lt Green     A/C Switch
C24 White Pink     Brake Switch Sense
C25 Dk Green Orange 18 K72 Generator Field Source (+)
C26 Dk Blue Lt Green     Fuel Level Sensor
C27 Pink     SCI transmit
C28 White Black     CCD Bus (-)
C29 Lt Green Black     SCI Receive
C30 Violet Brown     CCD Bus (+)
C32 White Lt Green     S/C Switch Signal
Relays
(from power distribution center)

Relay at rest
Relay energized
Fuel Pump Relay
Pin Color Stripe Gauge Purpose
85 Dk Blue White   Run / Start
86 Brown   PCM - C19
30 Dk Green Black   15A fuse
Always Hot
87 Dk Green White   Fuel Pump
87a        
Auto Shutdown Relay
Pin Color Stripe Gauge Purpose
85 Dk Blue White   Run / Start
86 Dk Blue Yellow   PCM - C3
30 Red Lt Green   25A fuse
From battery
87 Dk Green Orange   20A fuse to
PCM - C12 &
C107 -1
  Dk Green White   15A fuse to
C107 - 7
87a        
A/C Compressor Relay
Pin Color Stripe Gauge Purpose
85 Dk Blue White   Run / Start
86 Dk Blue Orange   PCM - C1
30 Dk Blue White   20A fuse
Run / Start
87 Dk Blue Black   A/C Comressor
87a        
Fan Control Relay
Pin Color Stripe Gauge Purpose
85 Dk Blue White   Run / Start
86 Dk Blue Pink   PCM - C2
30 Red   40A fuse
Always Hot
87 Lt Green   Cooling Fan
87a