Engine Control Module (ECM) Connectors

Engine Control Module (ECM) K

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		AMP 0-368434-2 64-Way F ECU 64P Conn Assembly (32-bit-B) (BN)
Pin	Wire Color	Circuit No.	Function
K1	OG	440	Battery Positive Voltage
K2-K4	-	-	Not Used
K5	BK/WH	51	Ground (w/Octane Switch)
K6	D-GN/WH	817	Vehicle Speed Signal (Manual Transmission)
K7	D-BU	876	Rough Road Signal - W/ABS
K8-K11	-	-	Not Used
K12	D-BU	473	High Speed Cooling Fan Relay Control
K13	-	-	Not Used
K14	PU	1807	CAN Serial Data High
K15	YE	710	CAN Serial Data Low
K16	BN/WH	1669	Heated Oxygen Sensor (HO2S) 1 Heater Control
K17	OG	440	Battery Positive Voltage
K18	PK/D-BU	539	Ignition 1 Voltage
K19-K20	-	-	Not Used
K21	D-GN	602	Rough Road Sensor Signal (w/o ABS)
K22	L-BU	380	A/C Refrigerant Pressure (ACP) Sensor Signal
K23	-	-	Not Used
K24	D-GN	135	Engine Coolant Temperature (ECT) Sensor Gage Signal
K25	GY	121	Engine Speed Signal
K26-K27	-	-	Not Used
K28	D-GN/WH	335	Low Speed Cooling Fan Relay Control
K29	D-GN	67	A/C Clutch Relay Control
K30	WH	30	Fuel Level Sensor Signal
K31	-	-	Not Used
K32	PU	2000	Serial Data
K33	-	-	Not Used
K34	PU/WH	632	Low Reference
K35	D-GN/WH	762	A/C Request Signal
K36	PU	1670	Heated Oxygen Sensor (HO2S) 2 Signal
K37-K47	-	-	Not Used
K48	L-BU/BK	1986	Evaporative Emissions (EVAP) Canister Vent Solenoid Control
K49	-	-	Not Used
K50	GY	605	5-Volt Reference
K51	GY	1936	Fuel Level Sensor Signal
K52	YE/D-GN	890	Fuel Tank Pressure Sensor Signal
K53	L-GN	413	Low Reference
K54	L-GN	465	Fuel Pump Relay Control
K55-K63	-	-	Not Used
K64	BN/WH	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
M1	L-BU	406	Ignition Coil (IC) Timing Control 1 and 4
M2	BN/BK	1671	Heated Oxygen Sensor (HO2S) 2 Heater Control
M3	GY	120	Fuel Pump Supply Voltage
M4	WH	428	Evaporative Emissions (EVAP) Canister Purge Solenoid Control
M5	YE/BK	1868	Low Reference
M6	GY	417	Throttle Position (TP) Sensor Signal
M7	GY	472	Intake Air Temperature (IAT) Sensor Signal
M8	D-BU/WH	432	Manifold Absolute Pressure (MAP) Sensor Signal
M9	WH/BK	1456	Exhaust Gas Recirculation (EGR) Valve Position Sensor Signal
M10	-	-	Not Used
M11	D-GN/WH	844	Fuel Injector 4 Control
M12	GY	1653	Heated Oxygen Sensor (HO2S) 1 Low Reference
M13	BN	1747	Idle Air Control (IAC) A High Control
M14	WH	444	Idle Air Control (IAC) B Low Control
M15	YE	1748	Idle Air Control (IAC) A Low Control
M16	L-BU/BK	1688	5-volt Reference
M17	-	-	Not Used
M18	YE/BK	496	Knock Sensor Signal
M19	D-GN	435	Exhaust Gas Recirculation (EGR) Solenoid Valve Control
M20	-	-	Not Used
M21	D-BU/WH	1869	Crankshaft Position (CKP) Sensor Signal
M22	BN/WH	1745	Fuel Injector 2 Control
M23	-	-	Not Used
M24	D-GN/BK	1746	Fuel Injector 3 Control
M25	YE/D-BU	1744	Fuel Injector 1 Control
M26	PU	633	Camshaft Position (CMP) Sensor Signal
M27	-	-	Not Used
M28	L-GN	410	Engine Coolant Temperature (ECT) Sensor Signal
M29	D-GN/RD	1665	Heated Oxygen Sensor (HO2S) 1 Signal
M30	PU/WH	1749	Idle Air Control (IAC) Coil B High Control
M31	-	-	Not Used
M32	D-GN/WH	416	5-volt Reference
M33	L-BU	406	Ignition Coil (IC) Timing Control (1 and 4)
M34	-	-	Not Used
M35	D-GN/WH	423	Ignition Coil (IC) Timing Control (2 and 3)
M36	-	-	Not Used
M37	BK/WH	51	Ground
M38	BK/WH	51	Ground
M39	BK/WH	51	Ground
M40	BK/WH	51	Ground
M41	BK/WH	51	Ground
M42-M47	-	-	Not Used
M48	OG/BK	469	Low Reference
M49-M50	-	-	Not Used
M51	D-GN/WH	423	Ignition Coil (IC) Timing Control (2 and 3)
M52	D-GN	435	Exhaust Gas Recirulation (EGR) Valve Control
M53-M63	-	-	Not Used
M64	BK	808	Low Reference