Engine Control Module (ECM) Connector End View C1

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

Courtesy of GENERAL MOTORS CORP.

Engine Control Module (ECM) C1 Connector & Terminal Parts Information

Connector Part Information

Terminal Part Information

Pins: 7, 9, 12, 13, 18, 19, 26, 33, 34, 35, 36, 37, 40, 44, 47, 48, 49, 51, 53, 54, 55
Terminal/Tray: 33467-0005/23
Core/Insulation Crimp: J/J
Release Tool/Test Probe: J-38125-213/J-35616-64B (L-BU)

Engine Control Module (ECM) C1 Connector End View

Pin	Wire Color	Circuit No.	Function
1-6	-	-	Not Used
7	WH	17	Stop Lamp Switch Signal
8	-	-	Not Used
9	TN	2759	Low Reference
10-11	-	-	Not Used
12	BN/WH	419	MIL Control
13	D-GN/WH	465	Fuel Pump Relay Control
14-17	-	-	Not Used
18	D-BU	5985	Accessory Wake up Serial Data
19	PK	439	Ignition 1 Voltage
20	RD/WH	4640	Battery Positive Voltage
21-25	-	-	Not Used
26	YE	447	Starter Relay Coil Control
27-32	-	-	Not Used
33	WH/BK	1164	5-Volt Reference 2
34	GY	416	5-Volt Reference 1
35	TN/BK	1274	5-Volt Reference 1
36	BN	1271	Low Reference
37	PU/WH	1272	Low Reference
38-39	-	-	Not Used
40	OG/WH	5069	PWTRAIN Relay Control
41-43	-	-	Not Used
44	PU/BK	1589	Primary Fuel Level Sensor Signal
45-46	-	-	Not Used
47	D-BU/WH	1161	APP Sensor 1 Signal
48	D-GN	890	Fuel Tank Pressure Sensor Signal
49	L-BU	1162	APP Sensor 2 Signal
50	-	-	Not Used
51	PU	421	Air Solenoid Relay Control
52	-	-	Not Used
53	D-GN/WH	459	A/C Compressor Clutch Relay Control
54	OG	473	High Speed Cooling Fan Relay Control
55	TN/WH	1310	EVAP Canister Vent Solenoid Control
56	-	-	Not Used