Engine Control Module (ECM) Connectors

Engine Control Module (ECM) - K

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		AMP 1-368434-1 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	GY	892	Octane Selection Signal
K6	D-GN	817	Vehicle Speed Signal (Manual Transmission)
K7	D-GN	834	Rough Road Signal - w/ABS
K8-K11	-	-	Not Used
K12	GY	473	High Speed Cooling Fan Relay Control
K13	YE	492	Intake Manifold Tuning Valve (IMTV) Control
K14	PU	1807	CAN Serial Data High
K15	YE	710	CAN Serial Data Low
K16	BN	50	Heated Oxygen Sensor (HO2S) 1 Heater Control
K17	OG	440	Battery Positive Voltage
K18	PK	1739	Ignition 1 Voltage
K19-K20	-	-	Not Used
K21	D-GN	602	Rough Road Sensor Signal - w/o ABS
K22	L-BU	203	A/C Pressure Sensor Signal
K23	-	-	Not Used
K24	WH	135	Engine Coolant Temperature Gage Control
K25	GY	121	Engine Speed Signal
K26-K27	-	-	Not Used
K28	GY	335	Low Speed Cooling Fan Relay Control
K29	D-GN	67	A/C Clutch Relay Control
K30	WH	30	Fuel Gage Control
K31	-	-	Not Used
K32	BK/WH	2051	Keyword Serial Data
K33	-	-	Not Used
K34	L-BU	1937	Low Reference
K35	D-GN/WH	762	A/C Request Signal
K36	L-GN	413	Heated Oxygen Sensor (HO2S) 2 Signal
K37-K47	-	-	Not Used
K48	YE	1578	EVAP Canister Vent Solenoid Control
K49	-	-	Not Used
K50	WH/PK	1031	5-Volt Reference
K51	GY	1936	Fuel Level Sensor Signal
K52	L-BU	1030	Fuel Tank Pressure Sensor Signal
K53	D-GN/BK	1670	Heated Oxygen Sensor (HO2S) 2 Low Reference
K54	YE/D-BU	497	Fuel Pump Relay Control
K55-K63	-	-	Not Used
K64	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
M1	D-GN/WH	423	Ignition Coil 2 and 3 Control
M2	BN	1671	Heated Oxygen Sensor (HO2S) 2 Heater Control
M3	BN	1733	Ignition 1 Voltage
M4	WH	452	EVAP Canister Purge Valve Solenoid Control
M5	YE/BK	1868	Low Reference
M6	WH	425	Throttle Position (TP) Sensor Signal
M7	L-BU	468	Intake Air Temperature (IAT) Sensor Signal
M8	L-BU	432	Manifold Absolute Pressure (MAP) Sensor Signal
M9	D-GN	435	Exhaust Gas Recirculation (EGR) Valve Position Sensor Signal
M10	-	-	Not Used
M11	YE	1744	Fuel Injector 4 Control
M12	WH	428	Heated Oxygen Sensor (HO2S) 1 Signal
M13	L-GN	534	Idle Air Control (IAC) A High Control
M14	D-GN	415	Idle Air Control (IAC) B Low Control
M15	WH/D-BU	533	Idle Air Control (IAC) A Low Control
M16	L-BU	469	5-Volt Reference
M17	-	-	Not Used
M18	YE/BK	496	Knock Sensor (KS) Signal
M19	D-BU	436	Exhaust Gas Recirculation (EGR) Valve Control
M20	-	-	Not Used
M21	D-BU/WH	1869	Crankshaft Position (CKP) Sensor Signal
M22	L-GN	1746	Fuel Injector 2 Control
M23	-	-	Not Used
M24	BN/WH	1745	Fuel Injector 3 Control
M25	BN/BK	1747	Fuel Injector 1 Control
M26	L-BU/BK	1748	Camshaft Position (CMP) Sensor Signal
M27	-	-	Not Used
M28	L-GN	410	Engine Coolant Temperature (ECT) Sensor Signal
M29	D-BU/BK	429	Heated Oxygen Sensor (HO2S) 1 Low Reference
M30	L-GN	417	Idle Air Control (IAC) B High Control
M31	-	-	Not Used
M32	PU	427	5-Volt Reference
M33	OG	423	Ignition Coil 2 and 3 Control
M34	-	-	Not Used
M35	L-BU	406	Ignition Coil 1 and 4 Control
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	BN	732	Low Reference
M49-M50	-	-	Not Used
M51	L-BU	406	Ignition Coil 1 and 4 Control
M52	D-BU	436	Exhaust Gas Recirculation (EGR) Valve Control
M53-M63	-	-	Not Used
M64	D-BU/WH	1876	Low Reference