Engine Control Module (ECM) C1

Fig 1: Engine Control Module (ECM) C1 Connector End View

Courtesy of GENERAL MOTORS CORP.

Engine Control Module (ECM) C1 Connector End View

Connector Part Information

Pin	Wire Color	Circuit No.	Function
1-6	-	-	Not Available
7	WH	17	Stop Lamp Supply Voltage
8	-	-	Not Available
9	OG/BK	1057	Low Reference
10-11	-	-	Not Available
12	BN/WH	419	MIL Control
13	D-GN/WH	465	Fuel Pump Relay Control
14-17	-	-	Not Available
18	BN	4	Accessory Voltage
19	PK	639	Ignition 1 Voltage
20	RD/WH	540	Battery Positive Voltage
21-25	-	-	Not Available
26	PU/WH	6386	Starter Relay Coil Control
27-32	-	-	Not Available
33	WH/BK	1164	5-Volt Reference B
34	GY	705	5-Volt Reference A
35	TN	1274	5-Volt Reference A
36	BN	1271	Low Reference
37	PU	1272	Low Reference
38	-	-	Not Available
39	-	-	Not Used
40	BN	5069	Powertrain Relay Control
41-43	-	-	Not Available
44	PU	1589	Fuel Level Sensor Signal
45-46	-	-	Not Available
47	D-BU	1161	APP Sensor 1 Signal
48	D-GN	890	Fuel Tank Pressure Sensor Signal
49	L-BU	1162	APP Sensor 2 Signal
50-52	-	-	Not Available
53	D-GN/WH	459	A/C Compressor Clutch Relay Control
54	D-BU	473	High Speed Cooling Fan Relay Control
55	WH	1310	EVAP Canister Vent Solenoid Control
56	-	-	Not Available