Engine Control Module (ECM) - X1 (1.4L) (LDT)

Fig 1: Engine Control Module (ECM) - X1 (1.4L) (LDT) Connector End View

Courtesy of GENERAL MOTORS CORP.

Pin	Wire	Circuit	Function
1	RD/WH	-	Battery Positive Voltage
2	-	-	Not Used
3	PK	-	Ignition 1 Voltage
4-9	-	-	Not Used
10	L-BU	-	Rough Road Sensor Signal
11	YE	-	Rough Road Sensor Return
12	WH	-	APP Sensor 1 Signal
13	GY	-	Engine Speed Signal
14-15	-	-	Not Used
16	YE	-	CAN Bus High Serial Data
17	-	-	Not Used
18	BN	-	Brake Switch Signal
19-21	-	-	Not Used
22	OG	-	Ignition 1 Voltage
23-24	-	-	Not Used
25	PU	-	A/C High Side Pressure Sensor Signal
26	-	-	Not Used
27	D-BU	-	APP Sensor 2 Signal
28	BN/BK	-	Fuel Tank Pressure (FTP) Sensor Signal
29	-	-	Not Used
30	BN	-	Heated Oxygen Sensor (HO2S) 1 Hi Signal
31	-	-	Not Used
32	PU	-	CAN Bus Low Serial Data
33-34	-	-	Not Used
35	GY	-	5-Volt Reference
36	GY	-	5-Volt Reference
37	BN	-	Low Reference
38	-	-	Not Used
39	YE	-	Low Reference
40	BN	-	5-Volt Reference
41	L-BU	-	Vehicle Speed Signal
42-44	-	-	Not Used
45	L-BU	-	Low Reference
46	BN	-	Oxygen Sensor 2 Heater Low Control
47	-	-	Not Used
48	BN	-	Malfunction Indicator Lamp Control
49	GY	-	Fuel Level Sensor Signal
50	PU/WH	-	5-Volt Reference
51	PU/WH	-	A/C Compressor Relay Control
52	WH	-	Fuel Gage Control
53	-	-	Not Used
54	D-GN/WH	-	Low Reference
55	WH	-	Low Reference
56-57	-	-	Not Used
58	L-BU	-	5-Volt Reference
59	BN	-	Low Reference
60	YE	-	EVAP Canister Purge Solenoid Control
61	-	-	Not Used
62	BN	-	MAIN Relay Control
63-64	-	-	Not Used
65	D-GN/WH	-	A/C Request Signal
66	D-BU	-	Ignition Coil B Control
67	GY/D-GN	-	Oxygen Sensor 1 Heater Low Control
68	WH	-	Ground
69-70	-	-	Not Used
71	L-GN	-	Fuel Pump Relay Control
72	BK/WH	-	Serial Data
73	BK	-	Ground

Connector Part Information