Powertrain Control Module (PCM) C1

Fig 1: Powertrain Control Module (PCM) C1 Connector End Views

Courtesy of GENERAL MOTORS CORP.

Powertrain Control Module (PCM) C1 Connector Parts Information

Connector Part Information

Terminal Part Information

Powertrain Control Module (PCM) C1 Connector Terminal Identification

Pin	Wire Color	Circuit No.	Function
1-2	-	-	Not Used
3	GY/BK	1694	4WD Low Signal
4-5	-	-	Not Used
6	D-GN/WH	459	A/C Compressor Clutch Relay Control
7	BN	1271	Low Reference
8	PU	1272	Low Reference
9-11	-	-	Not Used
12	PU	1589	Fuel Level Sensor Signal
13	PK	739	Ignition 1 Voltage
14	-	-	Not Used
15	PU	1807	Class 2 Serial Data
16	-	-	Not Used
17	GY	2700	5-Volt Reference
18	BN	4	Accessory Voltage
19	PK	639	Ignition 1 Voltage
20	OG	440	Battery Positive Voltage
21	D-GN/WH	817	Vehicle Speed Signal
22	WH	1310	EVAP Canister Vent Solenoid Control
23	-	-	Not Used
24	D-GN	890	Fuel Tank Pressure Sensor Signal
25	-	-	Not Used
26	RD/BK	380	A/C Refrigerant Pressure Sensor Signal
27	D-BU	1161	APP Sensor 1 Signal
28	-	-	Not Used
29	BK	2759	Low Reference
30	WH/BK	1164	5-Volt Reference
31	-	-	Not Used
32	L-BU	20	Stop Lamp Supply Voltage
33-36	-	-	Not Used
37	D-GN/WH	465	Fuel Pump Relay Control
38	WH/BK	448	Powertrain Diagnostic Enable
39	-	-	Not Used
40	BN/WH	419	MIL Control
41	L-BU	1162	APP Sensor 2 Signal
42	-	-	Not Used
43	TN	1274	5-Volt Reference
44	GY	1884	Cruise Control Switch Signal
45	-	-	Not Used
46	PU	420	TCC Brake Switch/Cruise Control Release Signal
47	GY	2709	5-Volt Reference
48	YE/BK	625	Starter Enable Relay Control
49-52	-	-	Not Used
53	BN/WH	379	CPP Switch Signal
54	D-GN	1433	PNP/Clutch Start Switch Signal
56	BK	2751	Low Reference