Engine Control Module (ECM) X1 (LAT)

Fig 1: Engine Control Module (ECM) X1 (LAT)

Courtesy of GENERAL MOTORS CORP.

Engine Control Module (ECM) X1 (LAT)

Pin	Wire	Circuit	Function
1-6	-	-	Not Used
7	0.5 WH	17	Stop Lamp Switch Signal
8	-	-	Not Used
9	0.5 BN/WH	6281	Low Reference
10-11	-	-	Not Used
12	0.5 BN/WH	419	MIL Control
13	0.5 D-GN/WH	465	Fuel Pump Relay Control
14-17	-	-	Not Used
18	0.5 D-BU	5985	Accessory Voltage
19	0.5 PK	639	Ignition 1 Voltage
20	0.5 RD/WH	40	Battery Positive Voltage
21-25	-	-	Not Used
26	0.5 PU/WH	6386	Starter Relay Coil Control
27-30	-	-	Not Used
31	0.5 TN/BK	9945	Low Reference
32	0.5 GY	9905	5-Volt Reference
33	0.5 WH/BK	1164	5-Volt Reference 2
34	0.5 BN/WH	6283	5-Volt Reference 1
35	0.5 TN	1274	5-Volt Reference 1
36	0.5 BN	1271	Low Reference
37	0.5 PU	1272	Low Reference
38-39	-	-	Not Used
40	0.5 YE	5991	Powertrain Relay Control
41-43	-	-	Not Used
44	0.5 D-BU	1936	Fuel Level Sensor Signal - Left
45	0.5 L-BU	1937	Fuel Level Sensor Signal - Right
46	0.5 YE	9914	Brake Booster Vacuum Sensor Signal
47	0.5 D-BU	1161	APP Sensor 1 Signal
48	0.5 D-GN	890	Fuel Tank Pressure Sensor Signal
49	0.5 L-BU	1162	APP Sensor 2 Signal
50-52	-	-	Not Used
53	0.5 D-GN/WH	459	A/C Compressor Clutch Relay Control
54	0.5 D-BU	473	High Speed Cooling Fan Relay Control
55	0.5 WH	1310	EVAP Canister Vent Solenoid Control
56	-	-	Not Used

Connector Part Information  OEM: 12582680 Service: See Catalog Description: 56-Way F 0.64 2.8 Series, Sealed (BU)

Terminal Part Information  Pins: 7, 9, 12-13, 18-20, 26, 31-37, 40, 44, 46-49, 53-55 Terminal/Tray: 33467-0003/23 Core/Insulation Crimp: H/H Release Tool/Test Probe: J-38125-213/J-35616-64B (L-BU)