GM Service Manual Online
For 1990-2009 cars only
Table 1: Engine Control Module (ECM) - MR-140 - European Emissions - K
Table 2: Engine Control Module (ECM) - MR-140 - European Emissions - M
Table 3: Engine Control Module (ECM) - A-B - Non European Emissions (ITMS-6F)
Table 4: Engine Control Module (ECM) - C-D - Non European Emissions (ITMS-6F)

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


Object Number: 1466972  Size: CF

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

1

OG

440

Battery Positive Voltage

2-5

--

--

Not Used

6

D-GN/WH

817

Vehicle Speed Signal

7

D-BU/BK

480

Rough Road Signal (ABS) (RHD)

8-11

--

--

Not Used

12

D-BU

473

High Speed Cooling Fan Relay Control

13

--

--

Not Used

14

YE/BK

1921

CAN Serial Data High

15

WH/BK

1922

CAN Serial Data Low

16

BK

1654

Heated Oxygen Sensor (HO2S) 1 Heater Control

17

OG

440

Battery Positive Voltage

18

PK/D-BU

539

Ignition 1 Voltage

19

WH/BK

448

Diagnostic

20

--

--

Not Used

21

D-BU/BK

480

Rough Road Sensor Signal (Non ABS)

22

RD/D-BK

380

A/C Pressure Sensor Signal

23-24

--

--

Not Used

25

WH

121

Engine Speed Signal

26-27

--

--

Not Used

28

D-GN

335

Low Speed Cooling Fan Relay Control

29

PU/WH

67

A/C Clutch Relay Control

30

PU/BK

130

Fuel Gage Control (RHD)

YE

130

Fuel Gage Control (LHD)

31

--

--

Not Used

32

D-GN/BK

2905

Keyword Serial Data

33

--

--

Not Used

34

BK/WH

1750

Low Reference (LHD)

470

Low Reference (RHD)

35

D-GN/WH

762

A/C Request Signal

36

D-BU/WH

1668

Heated Oxygen Sensor (HO2S) 2 Signal

37-49

--

--

Not Used

50

OG/BK

605

5-Volt Reference

51

D-BU

1936

Fuel Level Sensor Signal

52

--

--

Not Used

53

L-BU/WH

1669

Heated Oxygen Sensor (HO2S) 2 Low Reference

54

D-GN/WH

465

Fuel Pump Relay Control

55-63

--

--

Not Used

64

BN/WH

419

Malfunction Indicator Lamp (MIL) Control

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


Object Number: 1501851  Size: CF

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

1

D-BU/WH

406

Ignition Coil 2 and 3 Control

2

BK

1654

Heated Oxygen Sensor (HO2S) 2 Heater Control

3

PK/WH

739

Ignition 1 Voltage

4

D-GN/WH

428

EVAP Canister Purge Valve Solenoid Control

5

YE/BK

1868

Low Reference

6

D-BU

417

Throttle Position (TP) Sensor Signal

7

BN

472

Intake Air Temperature (IAT) Sensor Signal

8

L-GN

432

Manifold Absolute Pressure (MAP) Sensor Signal

9

BN

1456

Exhaust Gas Recirculation (EGR) Valve Position Sensor Signal

10

--

--

Not Used

11

D-BU/BK

844

Fuel Injector 4 Control

12

GY

1653

Heated Oxygen Sensor (HO2S) 1 Signal

13

L-BU/WH

1747

Idle Air Control (IAC) A High Control

14

L-GN/BK

444

Idle Air Control (IAC) B Low Control

15

L-BU/BK

1748

Idle Air Control (IAC) A Low Control

16

OG/BK

469

5-Volt Reference

17

--

--

Not Used

18

YE/BK

496

Knock Sensor (KS) Signal (LHD)

GY

496

Knock Sensor (KS) Signal (RHD)

19

GY

435

Exhaust Gas Recirculation (EGR) Valve Control

20

--

--

Not Used

21

D-BU/WH

1869

Crankshaft Position (CKP) Sensor Signal

22

L-GN/BK

1745

Fuel Injector 2 Control

23

--

--

Not Used

24

RD/BK

1746

Fuel Injector 3 Control

25

RD

1744

Fuel Injector 1 Control

26

BN/WH

633

Camshaft Position (CMP) Sensor Signal

27

--

--

Not Used

28

YE

410

Engine Coolant Temperature (ECT) Signal

29

RD

1665

Heated Oxygen Sensor (HO2S) 1 Low Reference

30

L-GN/WH

1749

Idle Air Control (IAC) B High Control

31

--

--

Not Used

32

OG/BK

416

5-Volt Reference

33

D-BU/WH

406

Ignition Coil 2 and 3 Control

34

--

--

Not Used

35

D-GN/WH

423

Ignition Coil 1 and 4 Control

36

--

--

Not Used

37

BK/WH

251

Ground

38

BK/WH

251

Ground

39

BK/WH

251

Ground

40

BK/WH

251

Ground

41

BK/WH

251

Ground

42-47

--

--

Not Used

48

L-BU/BK

1688

Low Reference

49-50

--

--

Not Used

51

D-GN/WH

423

Ignition Coil 1 and 4 Control

52

GY

435

Exhaust Gas Recirculation (EGR) Valve Control

53-63

--

--

Not Used

64

D-BU/BK

808

Low Reference

Engine Control Module (ECM) - A-B - Non European Emissions (ITMS-6F)


Object Number: 258912  Size: CH

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

L-BU/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

D-BU/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 (ITMS-6F)


Object Number: 1501865  Size: CH

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