Engine Control Module (ECM) Connectors

Engine Control Module (ECM) K

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		AMP 0-368434-1 64-Way F ECU 64P Conn Assembly (32-bit-B) (BN)
Pin	Wire Color	Circuit No.	Function
1	OG	440	Battery Positive Voltage
2-4	-	-	Not Used
5	GY	892	Ground (w/Octane Switch)
6	D-GN	817	Vehicle Speed Signal (Manual Transmission)
7	GN	834	Rough Road Signal
8-11	-	-	Not Used
12	GY	473	High Speed Cooling Fan Relay Control
13	YE	492	Low Reference
14	PU	1807	CAN Serial Data High
15	YE	710	CAN Serial Data Low
16	BN	50	Heated Oxygen Sensor (HO2S) 1 Heater Control
17	OG	440	Battery Positive Voltage
18	PK	1739	Ignition 1 Voltage
19-20	-	-	Not Used
21	D-GN	602	Rough Road Sensor Signal (w/o ABS)
22	L-BU	203	A/C Refrigerant Pressure (ACP) Sensor Signal
23	-	-	Not Used
24	WH	135	Engine Coolant Temperature (ECT) Sensor Gage Signal
25	GY	121	Engine Speed Signal
26-27	-	-	Not Used
28	GY	355	Low Speed Cooling Fan Relay Control
29	D-GN	67	A/C Clutch Relay Control
30	WH	30	Fuel Level Sensor Signal
31	-	-	Not Used
32	BK/WH	2051	Serial Data
33	-	-	Not Used
34	L-BU	1937	Low Reference
35	D-GN/WH	762	A/C Request Signal
36	L-GN/OG	413	Heated Oxygen Sensor (HO2S) 2 Signal
	L-GN
37-47	-	-	Not Used
48	YE	1578	Evaporative Emissions (EVAP) Canister Vent Solenoid Control
49	-	-	Not Used
50	WH/PK	1031	5-Volt Reference
51	GY	1936	Fuel Level Sensor Signal
52	L-BU	1030	Fuel Tank Pressure Sensor Signal
53	GN/BK	1670	Low Reference
54	YE/D-BU	497	Fuel Pump Relay Control
55-63	-	-	Not Used
64	BN	419	Malfunction Indicator Lamp (MIL) Control

Engine Control Module (ECM) M

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		AMP 1-368434-1 64-Way F ECU 64P Conn Assembly (32-bit-B) (BK)
Pin	Wire Color	Circuit No.	Function
1	D-GN/WH	423	Ignition Coil (IC) Timing Control 1 and 4
2	BN	1671	Heated Oxygen Sensor (HO2S) 2 Heater Control
3	BN	1733	Fuel Pump Supply Voltage
4	WH	452	Evaporative Emissions (EVAP) Canister Purge Solenoid Control
5	YE/BK	1868	Low Reference
6	WH	425	Throttle Position (TP) Sensor Signal
7	L-BU	468	Intake Air Temperature (IAT) Sensor Signal
8	L-BU	432	Manifold Absolute Pressure (MAP) Sensor Signal
9	D-GN	435	Exhaust Gas Recirculation (EGR) Valve Position Sensor Signal
10	-	-	Not Used
11	YE	1744	Fuel Injector 4 Control
12	WH	428	Heated Oxygen Sensor (HO2S) 1 Low Reference
13	L-GN	534	Idle Air Control (IAC) A High Control
14	D-GN	415	Idle Air Control (IAC) B Low Control
15	WH/D-BU	533	Idle Air Control (IAC) A Low Control
	WH
16	L-BU	469	5-Volt Reference
17	-	-	Not Used
18	YE/BK	496	Knock Sensor Signal
19	D-BU	436	Exhaust Gas Recirculation (EGR) Solenoid Valve Control
20	-	-	Not Used
21	D-BU/WH	1869	Crankshaft Position (CKP) Sensor Signal
22	L-GN	1746	Fuel Injector 2 Control
23	-	-	Not Used
24	BN/WH	1745	Fuel Injector 3 Control
25	BN/BK	1747	Fuel Injector 1 Control
	BN
26	L-BU/BK	1748	Camshaft Position (CMP) Sensor Signal
	L-BU
27	-	-	Not Used
28	L-GN	410	Engine Coolant Temperature (ECT) Sensor Signal
29	D-BU/BK	429	Heated Oxygen Sensor (HO2S) 1 Signal
	D-BU
30	L-GN	417	Idle Air Control (IAC) Coil B High Control
31	-	-	Not Used
32	PU	427	5-Volt Reference
33	OG	423	Ignition Coil (IC) Timing Control (1 and 4)
34	-	-	Not Used
35	L-BU	406	Ignition Coil (IC) Timing Control (2 and 3)
36	-	-	Not Used
37	BK/WH	51	Ground
38	BK/WH	51	Ground
39	BK/WH	51	Ground
40	BK/WH	51	Ground
41	BK/WH	51	Ground
42-47	-	-	Not Used
48	BN/OG	732	Low Reference
	BN
49-50	-	-	Not Used
51	L-BU	406	Ignition Coil (IC) Timing Control (2 and 3)
52	D-BU	436	Exhaust Gas Recirculation (EGR) Valve Control
53-63	-	-	Not Used
64	D-BU/WH	1876	Low Reference