Engine Control Module (ECM) Connector End Views

Engine Control Module (ECM) - MR-140 - European Emissions - K

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		AMP 1-368434-2 64-Way F ECU 64P Conn Ass'y (32-bit-B) (BN)
Pin	Wire Color	Circuit Number	Function
K1	OG	440	Battery Positive Voltage
K2-K5	-	-	Not Used
K6	D-GN/WH	817	Vehicle Speed Signal
K7-K11	-	-	Not Used
K12	D-BU	473	High Speed Cooling Fan Relay Control
K13	-	-	Not Used
K14	YE/BK	1921	CAN Serial Data High
K15	WH/BK	1922	CAN Serial Data Low
K16	BK	1654	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-BU/BK	480	Rough Road Sensor Signal
K22	RD/D-BU	380	A/C Pressure Sensor Signal
K23-K24	-	-	Not Used
K25	WH	121	Engine Speed Signal
K26-K27	-	-	Not Used
K28	D-GN	335	Low Speed Cooling Fan Relay Control
K29	PU/WH	67	A/C Clutch Relay Control
K30	PU	130	Fuel Gage Control
K31	-	-	Not Used
K32	D-GN/BK	2905	Keyword Serail Data
K33	-	-	Not Used
K34	BK/WH	1750	Low Reference
K35	D-GN/WH	762	A/C Request Signal
K36	D-BU/WH	1668	Heated Oxygen Sensor (HO2S) 2 Signal
K37-K49	-	-	Not Used
K50	OG/BK	605	5-Volt Reference
K51	D-BU	1936	Fuel Level Sensor Signal
K52	-	-	Not Used
K53	L-BU/WH	1669	Heated Oxygen Sensor (HO2S) 2 Low Reference
K54	D-GN/WH	465	Fuel Pump Relay Control
K55-K63	-	-	Not Used
K64	BN/WH	419	Malfunction Indicator Lamp (MIL) Control

Engine Control Module (ECM) - MR-140 - European Emissions - M

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		AMP 0-68434-1 64-Way F ECU 64P Conn Ass'y (32-bit-B) (BN)
Pin	Wire Color	Circuit Number	Function
M1	D-BU/WH	406	Ignition Coil 2 and 3 Control
M2	BK	1654	Heated Oxygen Sensor (HO2S) 2 Heater Control
M3	PK/WH	739	Ignition 1 Voltage
M4	D-GN/WH	428	EVAP Canister Purge Valve Solenoid Control
M5	YE/BK	1868	Low Reference
M6	D-BU	417	Throttle Position (TP) Sensor Signal
M7	BN	472	Intake Air Temperature (IAT) Sensor Signal
M8	L-GN	432	Manifold Absolute Pressure (MAP) Sensor Signal
M9	BN	1456	Exhaust Gas Recirculation (EGR) Valve Position Sensor Signal
M10	-	-	Not Used
M11	D-BU/BK	844	Fuel Injector 4 Control
M12	GY	1653	Heated Oxygen Sensor (HO2S) 1 Signal
M13	L-BU/WH	1747	Idle Air Control (IAC) A High Control
M14	L-GN/BK	444	Idle Air Control (IAC) B Low Control
M15	L-BU/BK	1748	Idle Air Control (IAC) A Low Control
M16	OG/BK	469	5-Volt Reference
M17	-	-	Not Used
M18	YE/BK	496	Knock Sensor (KS) Signal
M19	GY	435	Exhaust Gas Recirculation (EGR) Valve Control
M20	-	-	Not Used
M21	D-BU/WH	1869	Crankshaft Position (CKP) Sensor Signal
M22	L-GN/BK	1745	Fuel Injector 2 Control
M23	-	-	Not Used
M24	RD/BK	1746	Fuel Injector 3 Control
M25	RD	1744	Fuel Injector 1 Control
M26	BN/WH	633	Camshaft Position (CMP) Sensor Signal
M27	-	-	Not Used
M28	YE	410	Engine Coolant Temperature (ECT) Signal
M29	RD	1665	Heated Oxygen Sensor (HO2S) 1 Low Reference
M30	L-GN/WH	1749	Idle Air Control (IAC) B High Control
M31	-	-	Not Used
M32	OG/BK	416	5-Volt Reference
M33	D-BU/WH	406	Ignition Coil 2 and 3 Control
M34	-	-	Not Used
M35	D-GN/WH	423	Ignition Coil 1 and 4 Control
M36	-	-	Not Used
M37	BK/WH	251	Ground
M38	BK/WH	251	Ground
M39	BK/WH	251	Ground
M40	BK/WH	251	Ground
M41	BK/WH	251	Ground
M42-M47	-	-	Not Used
M48	L-BU/BK	1688	Low Reference
M49-M50	-	-	Not Used
M51	D-GN/WH	423	Ignition Coil 1 and 4 Control
M52	GY	435	Exhaust Gas Recirculation (EGR) Valve Control
M53-M63	-	-	Not Used
M64	D-BU/BK	808	Low Reference

Engine Control Module (ECM) - A-B - Non European Emissions

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		PED 12110113 32-Way F Micro-Pack 100 Series (RD)
Pin	Wire Color	Circuit Number	Function
A1	L-BU/WH	1747	Idle Air Control (IAC) A High Control
A2	YE/BK	1748	Idle Air Control (IAC) A Low Control
A3	L-GN/BK	444	Idle Air Control (IAC) B Low Control
A4	L-GN/WH	1749	Idle Air Control (IAC) B High Control
A5	-	-	Not Used
A6	OG	440	Battery Positive Voltage
A7	L-GN	432	Manifold Absolute Pressure (MAP) Sensor Signal
A8	D-GN/WH	762	A/C Request Signal
A9	D-BU/D-GN	3003	Throttle Position (TP) Sensor Signal
A10	D-GN	335	Low Speed Cooling Fan Relay Control
A11	-	-	Not Used
A12	D-GN/WH	465	Fuel Pump Relay Control
A13	D-GN/WH	428	EVAP Canister Purge Valve Solenoid Control
A14	D-BU	473	High Speed Cooling Fan Relay Control
A15	PU/WH	67	A/C Compressor Clutch Coil Supply Voltage
A16	YE/BK	1868	Low Reference
B1	BK/WH	251	Ground
B2	BK	808	Low Reference
B3	YE	410	Engine Coolant Temperature (ECT) Sensor Signal
B4	BN	472	Intake Air Temperature (IAT) Sensor Signal
B5-B7	-	-	Not Used
B8	OG/BK	434	Automatic Transmission Shift Lock Control
B9	WH/BK	448	Keyword Serial Data - Engine Control Module (ECM)
B10	BN/WH	419	Malfunction Indicator Lamp (MIL) Control
B11	-	-	Not Used
B12	YE	1410	Delivered Torque Signal
B13	WH	121	Engine Speed Signal
B14	D-BU/WH	1869	Crankshaft Position (CKP) Sensor Signal
B15-B16	-	-	Not Used

Engine Control Module (ECM) - C-D - Non European Emissions

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		PED 12110114 32-Way F Micro-Pack 100 Series (WH)
Pin	Wire Color	Circuit Number	Function
C1-C3	-	-	Not Used
C4	BK	1744	Fuel Injector 1 and 4 Control
C5	-	-	Not Used
C6	L-GN/BK	1745	Fuel Injector 2 and 3 Control
C7	BK/WH	251	Ground
C8	-	-	Not Used
C9	WH	1653	Oxygen Sensor Low Reference
C10	GY/BK	3015	Requested Torque Signal
C11	D-BU/WH	496	Knock Sensor (KS) Signal
C12	-	-	Not Used
C13	D-BU/BK	1813	Octane Selection Switch
C14	WH	423	Ignition Coil 1 and 4 Control
C15	RD/BK	380	A/C Pressure Sensor Signal
C16	PK/D-BU	539	Ignition 1 Voltage
D1	-	-	Not Used
D2	PU/WH	1666	CO Potentiometer Signal
D3-D4	-	-	Not Used
D5	D-BU	417	Throttle Position (TP) Sensor Signal
D6	BN	1812	Octane Selection Switch
D7	BK/WH	251	Ground
D8	L-BU/BK	1688	Low Reference
D9	PU/WH	1665	Oxygen Sensor Signal
D10	D-GN/WH	817	Vehicle Speed Signal
D11	YE/BK	800	Serial Data
D12-D13	-	-	Not Used
D14	OG	406	Ignition Coil 2 and 3 Control
D15	OG/BK	469	Reference Low
D16	BK/WH	251	Ground