GM Service Manual Online
For 1990-2009 cars only
Table 1: Air Brake Dryer
Table 2: Low Air Pressure Switch
Table 3: Moisture Ejector Heater
Table 4: Multifunction Alarm Module (MFAM) C1 (Cat® Diesel)
Table 5: Multifunction Alarm Module (MFAM) (Gasoline Engine)
Table 6: Multifunction Alarm Module (MFAM) (GM Diesel)

Air Brake Dryer


Object Number: 35430  Size: CH

Connector Part Information

    • 12020599
    • 2 Way F Metri-Pack 280 Series, Sealed (BLK)

Pin

Wire Color

Circuit No.

Function

A

BRN

341

Fuse Output-Ignition

B

BLK

150

Ground

Low Air Pressure Switch


Object Number: 236406  Size: CH

Connector Part Information

    • 12065400
    • 2 Way F Metri-Pack 150 Series, Sealed (GRN)

Pin

Wire Color

Circuit No.

Function

A

BLK

150

Ground

B

TAN/WHT

33

Brake Warning Indicator Lamp Output

Moisture Ejector Heater


Object Number: 35437  Size: CH

Connector Part Information

    • 12052644
    • 2 Way F Metri-Pack 150 Series Sealed (LT GRY)

Pin

Wire Color

Circuit No.

Function

A

BRN

341

Fuse Output-Ignition

B

BLK

150

Ground

Multifunction Alarm Module (MFAM) C1 (Cat® Diesel)


Object Number: 73152  Size: CH

Connector Part Information

    • 12084944
    • 16 Way F Micro-Pack 100 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A1

LT BLU/BLK

1928

Brake Booster Fluid Flow Switch Feed

A2

YEL

53

Fuse Output-Generator-Tachometer Pulse

A3

LT BLU

20

Stoplamp Feed

A4

ORN/BLK

434

Transmission Mounted Neutral Safety Switch Signal

A5

PNK

39

Fuse Output-Ignition

A6

TAN/WHT

33

Brake Warning Indicator Lamp Output

A7

TAN/BLK

231

Oil Pressure Switch Signal

A8

BLK

150

Ground

B1

LT GRN

1478

Low Coolant Sensor Signal

B2

YEL/BLK

68

Low Coolant Level Indicator Lamp Output

B3

YEL/BLK

1471

Brake Warning Indicator Lamp Feed-Secondary

B4

GRY

847

Brake Pedal Switch Output-Extended Travel

B5

TAN/WHT

33

Brake Warning Indicator Lamp Output

B6

BRN

1675

Check Gauges Signal

B7

LT BLU

1377

Check Gauges Indicator Lamp Output

B8

ORN

1740

Fuse Output-Battery

Multifunction Alarm Module (MFAM) (Gasoline Engine)


Object Number: 73152  Size: CH

Connector Part Information

    • 12084944
    • 16 Way F Micro-Pack 100 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A1

LT BLU/BLK

1928

Brake Booster Fluid Flow Switch Feed

A2

YEL

53

Fuse Output-Generator-Tachometer Pulse

A3

LT BLU

20

Stoplamp Feed

A4

ORN/BLK

434

Transmission Mounted Neutral Safety Switch Signal

A5

PNK

39

Fuse Output-Ignition

A6

TAN/WHT

33

Brake Warning Indicator Lamp Output

A7

--

--

Not Used

A8

BLK

150

Ground

B1

BLK

150

Ground

B2

--

--

Not Used

B3

YEL/BLK

1471

Brake Warning Indicator Lamp Feed-Secondary

B4

GRY

847

Brake Pedal Switch Output-Extended Travel

B5

TAN/WHT

33

Brake Warning Indicator Lamp Output

B6

--

--

Not Used

B7

LT BLU

1377

Check Gauges Indicator Lamp Output

B8

ORN

1740

Fuse Output-Battery

Multifunction Alarm Module (MFAM) (GM Diesel)


Object Number: 73152  Size: CH

Connector Part Information

    • 12084944
    • 16 Way F Micro-Pack 100 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A1

LT BLU/BLK

1928

Brake Booster Fluid Flow Switch Feed

A2

YEL

53

Fuse Output-Generator-Tachometer Pulse

A3

LT BLU

20

Stoplamp Feed

A4

ORN/BLK

434

Transmission Mounted Neutral Safety Switch Signal

A5

PNK

39

Fuse Output-Ignition

A6

TAN/WHT

33

Brake Warning Indicator Lamp Output

A7

--

--

Not Used

A8

BLK

150

Ground

B1

LT GRN

1478

Low Coolant Sensor Signal

B2

YEL/BLK

68

Low Coolant Level Indicator Lamp Output

B3

YEL/BLK

1471

Brake Warning Indicator Lamp Feed-Secondary

B4

GRY

847

Brake Pedal Switch Output-Extended Travel

B5

--

--

Not Used

B6

BRN

1675

Check Gauges Signal

B7

LT BLU

1377

Check Gauges Indicator Lamp Output

B8

ORN

1740

Fuse Output-Battery