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Engine Control Module (ECM) C1

Fig 1: ECM C1 Connector

GM1590948

Courtesy of GENERAL MOTORS CORP.

Engine Control Module (ECM) Connector End Views

Connector Part Information

OEM: 34576-2803
Service: See Catalog
Description: TBD

Terminal Part Information

Terminal/Tray: TBD
Core/Insulation Crimp: TBD
Release Tool/Test Probe: TBD

Engine Control Module (ECM) C1

Pin	Wire Color	Circuit No.	Function
7	WH	17	Stop Lamp Switch Signal
9	TN	2759	Low Reference
12	BN/WH	419	MIL Control
13	D-GN/WH	465	Fuel Pump Relay Control [- Primary]
18	D-BU	5985	Accessory Wake-Up Serial Data
19	PK	439	Ignition 1 Voltage
20	RD/WH	540	Battery Positive Voltage
26	YE	447	Starter Relay Coil Control
33	WH/BK	1164	5-Volt Reference
34	GY	416	5-Volt Reference
35	TN/BK	1274	5-Volt Reference
36	BN	1271	Low Reference
37	PU/WH	1272	Low Reference
40	OG/WH	5069	Main Relay Control
44	PU/BK	1589	Fuel Level Sensor Signal [- Primary]
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
51	PU	421	Air Injection Reaction Solenoid Relay Coil Control
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