GM Service Manual Online
For 1990-2009 cars only
Table 1: Brake Fluid Level Switch
Table 2: Multifunction Alarm Module (MFAM) (C1) (Cat® Diesel)
Table 3: Multifunction Alarm Module (MFAM) w/Automatic Engine Shutdown (C2) (Cat® Diesel)
Table 4: Multifunction Alarm Module (MFAM) (Gasoline)
Table 5: Multifunction Alarm Module (MFAM) (GM Diesel)
Table 6: Power Brake Booster Fluid Flow Switch
Table 7: Power Brake Booster Pump Motor Relay

Brake Fluid Level Switch


Object Number: 232831  Size: CH

Connector Part Information

    • 12162194
    • 2 Way F Metri-Pack 150 Series, Sealed (BLK)

Pin

Wire Color

Circuit No.

Function

A

PPL

333

Brake Fluid Level Switch Output Brake Warning Indicator Lamp

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

Stop Lamp 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-Seconday

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) w/Automatic Engine Shutdown (C2) (Cat® Diesel)


Object Number: 280782  Size: CH

Connector Part Information

    • 12064760
    • 4 Way F Metri-Pack 150 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

BLK

850

Ground

B

BLK

150

Ground

C

--

--

Not Used

D

GRY

535

Coolant Temperature Switch Output

Multifunction Alarm Module (MFAM) (Gasoline)


Object Number: 73152  Size: CH

Connector Part Information

    • 12110259
    • 16 Way F Micro-Pack 100 Series (GRN)

Pin

Wire Color

Circuit No.

Function

A1

--

--

Not Used

A2

LT BLU

1377

Check Gauges Indicator Lamp Output

A3

LT GRN

1478

Low Coolant Sensor Signal

A4

LT BLU/BLK

1928

Brake Booster Fluid Flow Switch Feed

A5

GRY

847

Brake Pedal Switch Output- Extended Travel

A6

PNK

39

Fuse Output -Ignition 1- Type III Fuse

A7

LT BLU

20

Stop Lamp Feed

A8

ORN

1740

Fuse Output -Battery- Type III Fuse

B1

YEL/BLK

68

Low Coolant Level Indicator Lamp Output

B2

TAN/WHT

33

Brake Warning Indicator Lamp Output

B3

YEL/BLK

1471

Brake Warning Indicator Lamp Feed-Seconday

B4

BLK

150

Ground

B5

TAN/WHT

33

Brake Warning Indicator Lamp Output

B6

PPL

806

Fuse Output -Crank- Type III Fuse

B7

YEL

53

Fuse Output -Generator- Tachometer Pulse

B8

DK BLU

527

Automatic Engine Shutdown Alarm Signal

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

Stop Lamp 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-Seconday

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

Power Brake Booster Fluid Flow Switch


Object Number: 68719  Size: CH

Connector Part Information

    • 12162198
    • 2 Way F Metri-Pack 150 Series, Sealed (GRY)

Pin

Wire Color

Circuit No.

Function

A

LT BLU/BLK

1928

Brake Booster Fluid Flow Switch Feed

B

BLK

150

Ground

Power Brake Booster Pump Motor Relay


Object Number: 68749  Size: CH

Connector Part Information

    • 12124169
    • 4 Way F Mixed (BLK)

Pin

Wire Color

Circuit No.

Function

30

RED

2

Fuse Output Battery Type I Fuse

85

GRY

847

Brake Pedal Switch Output Extended Travel

86

LT BLU/BLK

1928

Brake Booster Fluid Flow Switch Feed

87

ORN

1470

Power Brake Booster Pump Motor Feed