GM Service Manual Online
For 1990-2009 cars only
Table 1: Engine Control Module (ECM) - K
Table 2: Engine Control Module (ECM) - M

Engine Control Module (ECM) - K


Object Number: 1466972  Size: CF

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


Object Number: 1481262  Size: CF

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