Engine Control Module (ECM) C1

Fig 1: Powertrain Control Module (PCM) C1 & C3 Connector End View

Courtesy of GENERAL MOTORS CORP.

Engine Control Module (ECM) Connector End Views

Connector Part Information

Terminal Part Information

Engine Control Module (ECM) C1

Pin	Wire Color	Circuit No.	Function
1	PU	1589	Primary Fuel Level Sensor Signal
2	L-BU	1162	Accelerator Pedal Position Signal (2)
3	D-GN	890	Fuel Tank Pressure Sensor Signal
4	D-BU	1161	Accelerator Pedal Position Signal (1)
5	-	-	Not Used
6	D-GN	1433	Clutch Start Switch Signal
7	-	-	Not Used
8	BN/WH	379	Cruise Control Clutch Pedal Position Switch Signal (w/M86)
9	PU	420	Torque Converter Clutch Brake Switch Signal
10	WH/BK	1164	Accelerator Pedal Position 5-Volt Reference (1)
11	L-BU	20	Stop Lamp Supply Voltage
12	BN	4	Accessory Voltage
13	GY	2709	Fuel Tank Pressure Sensor 5-Volt Reference
14	D-GN/WH	465	Fuel Pump Primary Relay Control
15-17	-	-	Not Used
18	BN	5069	Engine Main Relay Coil Control
19-27	-	-	Not Used
28	PK	1039	Run/Crank Ignition 1 Voltage
29	-	-	Not Used
30	WH	1310	EVAP Canister Vent Solenoid Control
31	D-GN/WH	459	A/C Compressor Clutch Relay Control
32-40	-	-	Not Used
41	TN	1274	Accelerator Pedal Position 5-Volt Reference (2)
42-44	-	-	Not Used
45	BN/WH	419	Check Engine Indicator Control
46	YE	447	Starter Relay Coil Control
47-51	-	-	Not Used
52	RD/WH	840	Battery Positive Voltage
53	BN	1271	Accelerator Pedal Position Low Reference (1)
54	TN	2759	Fuel Tank Pressure Sensor Low Reference
55	-	-	Not Used
56	PU	1272	Accelerator Pedal Position Low Reference (2)