PCM Pin Out Chart (1996-1998 4.0L Jeep Grand Cherokee)

Page 3 of 3

1996-1998 PCM GRAY Connector

IMPORTANT: The following pin out chart applies only to the 1996, 1997, 1998 4.0L Jeep Grand Cherokee.

GRAY PCM 32 Pin Connector
Pin	Wire Color	Description
C-1	DK BLU/RED	A/C Compressor Relay Control
C-2	---	Not Used
C-3	PNK/WHT	Auto Shutdown (ASD) Relay
C-4	TAN/RED	Cruise Control Vacuum Solenoid
C-5	LT GRN/RED	Cruise Control Vent Solenoid
C-6	BRN/YEL	Over-Drive Indicator
C-7	---	Not Used
C-8	---	Not Used
C-9	---	Not Used
C-10	DK GRN/RED	EVAP Leak Detection Pump Control
C-11	YEL/RED	Cruise Control Power Supply
C-12	DK GRN/ORG	ASD Relay Control
C-13	ORG	Trans Over-Drive Switch
C-14	VIO/RED	EVAP Canister Switch
C-15	RED/YEL	Battery Temp Sensor Signal
C-16	---	Not Used
C-17	---	Not Used
C-18	---	Not Used
C-19	DK BLU	Fuel Pump Relay Control
C-20	PNK/BLK	EVAP Solenoid Driver
C-21	---	Not Used
C-22	DK BLU/BLK	A/C Switch
C-23	---	Not Used
C-24	BRN	Brake Switch Signal
C-25	DK GRN/VIO	Voltage Regulator (1997-1998 Only)
C-26	LT BLU/BLK	Low Fuel Input
C-27	BLK/PNK	SCI Transmit
C-28	WHT/BLK	CCD Bus (-)
C-29	BLK/WHT	SCI Receive
C-30	VIO/BRN	CCD Bus (+)
C-31	---	Not Used
C-32	PNK	Cruise Control Switch Signal

Here are some very important safety precautions when testing the wires coming out of the PCM connectors.

If one or any of the wires on your Dodge Ram DO NOT match the color stated in the pin out charts, then you should not use the pin out charts in this article. Why? Because this is the clearest indication that these ARE NOT the connector pin out charts for your particular vehicle.
Never probe the front of the connector.
1. You should use a wire piercing probe and probe the wire a few inches away from the connector.
  - To see what this tool looks like: Wire Piercing Probe.
2. You should use a back probe.
Read the Disclaimer.

If this info saved the day, buy me a beer!