GM Service Manual Online
For 1990-2009 cars only
Table 1: Electronic Brake Control Module (EBCM) - (JL4)
Table 2: Electronic Brake Control Module (EBCM) - (JL9)
Table 3: Multifunction Center Console Switch (Traction Control/Parking Assist/Tow Haul)
Table 4: Steering Angle Sensor
Table 5: Wheel Speed Sensor (WSS) - LF
Table 6: Wheel Speed Sensor (WSS) - LR
Table 7: Wheel Speed Sensor (WSS) - RF
Table 8: Wheel Speed Sensor (WSS) - RR
Table 9: Yaw Rate and Lateral Acceleration Sensor

Electronic Brake Control Module (EBCM) - (JL4)


Object Number: 1989569  Size: CH

Connector Part Information

Pin

Wire Colour

Wire Size

Function

1

BK

3.0

Ground

2

RD/BK

3.0

Battery Positive Voltage

3

OG

2.0

Battery Positive Voltage

4

BK

2.0

Ground

5

L-BU

0.5

Left Front Wheel Speed Sensor Signal

6

GY

0.5

Left Rear Wheel Speed Sensor Supply Voltage

7

GY

0.5

Right Rear Wheel Speed Sensor Supply Voltage

8

BN

0.5

Right Rear Wheel Speed Sensor Signal

9

GY

0.5

Right Front Wheel Speed Sensor Supply Voltage

10

D-GN

0.5

Right Front Wheel Speed Sensor Signal

11

--

--

Not Used

12

--

--

Not Used

13

--

--

Not Used

14

BN

0.5

High Speed GMLAN Serial Data Bus-

15

BK/BU

0.5

Steering Wheel Position Low Refernce

16

BN/WH

0.5

Yaw Rate Sensor Test Control

17

--

--

Not Used

18

D-GN

0.5

Steering Wheel Sensor 5 Volt Reference

19

--

--

Not Used

20

PU/WH

0.5

Combined Vehicle Sensor Signal (LAT/LONG)

21

--

--

Not Used

22

--

--

Not Used

23

--

--

Not Used

24

--

--

Not Used

25

BN

0.5

High Speed GMLAN Serial Data Bus-

26

GY

0.5

Left Front Wheel Speed Sensor Supply Voltage

27

BN/BK

0.5

Left Rear Wheel Speed Sensor Signal

28

L-BU

0.5

Communication Enable Relay Supply Voltage

29

--

--

Not Used

30

--

--

Not Used

31

--

--

Not Used

32

--

--

Not Used

33

--

--

Not Used

34

--

--

Not Used

35

BN/BK

0.5

High Speed GMLAN Serial Data Bus+

36

--

--

Not Used

37

L-GN/BK

0.5

Yaw Rate Sensor Test Control

38

--

--

Not Used

39

--

--

Not Used

40

--

--

Not Used

41

--

--

Not Used

42

--

--

Not Used

43

--

--

Not Used

44

--

--

Not Used

45

BN/BK

0.5

High Speed GMLAN Serial Data Bus+

46

--

--

Not Used

Electronic Brake Control Module (EBCM) - (JL9)


Object Number: 1989570  Size: CH

Connector Part Information

Pin

Wire Colour

Wire Size

Function

1

BK

3.0

Ground

2

RD/BK

3.0

Battery Positive Voltage

3

OG

2.0

Battery Positive Voltage

4

BK

2.0

Ground

5

L-BU

0.5

Left Front Wheel Speed Sensor Signal

6

GY

0.5

Left Rear Wheel Speed Sensor Supply Voltage

7

GY

0.5

Right Rear Wheel Speed Sensor Supply Voltage

8

BN

0.5

Right Rear Wheel Speed Sensor Signal

9

GY/WH

0.5

Right Front Wheel Speed Sensor Supply Voltage

10

D-GN

0.5

Right Front Wheel Speed Sensor Signal

11

--

--

Not Used

12

--

--

Not Used

13

--

--

Not Used

14

BN

0.5

High Speed GMLAN Serial Data Bus-

15

BN

0.5

High Speed GMLAN Serial Data Bus-

16

GY

0.5

Left Front Wheel Speed Sensor Supply Voltage

17

BN/BK

0.5

Left Rear Wheel Speed Sensor Signal

18

L-BU

0.5

Communication Enable Relay Supply Voltage

19

--

--

Not Used

20

--

--

Not Used

21

--

--

Not Used

22

--

--

Not Used

23

--

--

Not Used

24

--

--

Not Used

25

BN/BK

0.5

High Speed GMLAN Serial Data Bus+

26

BN/BK

0.5

High Speed GMLAN Serial Data Bus+

Multifunction Center Console Switch (Traction Control/Parking Assist/Tow Haul)


Object Number: 1989655  Size: CH

Connector Part Information

Pin

Wire Colour

Wire Size

Function

1

YE

0.3

LED Backlight Dimming Control

2

BK

0.3

Ground

3

L-BU

0.3

Tow/Haul Switch Signal

4

--

--

Not Used

5

BN/OG

0.3

Traction Control Switch Signal

6

GY

0.3

Object Detection Disable Signal

7

BN

0.3

Instrument Panel Lamp Supply Voltage

8

PU/WH

0.3

Object Detection Disable Signal

Steering Angle Sensor


Object Number: 1989572  Size: CH

Connector Part Information

Pin

Wire Colour

Wire Size

Function

1

PU/BN

0.35

High Speed GMLAN Serial Data Bus-

2

D-BU/BN

0.35

High Speed GMLAN Serial Data Bus-

3

GY-BN/BK

0.35

High Speed GMLAN Serial Data Bus+

4

BN-BN/BK

0.35

High Speed GMLAN Serial Data Bus+

5

L-BU

0.5

Communication Enable Relay Supply Voltage

6

OG-BK/Bu

0.5

Steering Wheel Position Sensor Low Reference

Wheel Speed Sensor (WSS) - LF


Object Number: 1989573  Size: CH

Connector Part Information

Pin

Wire Colour

Wire Size

Function

1

BN

0.75

Wheel Speed Sensor Signal Left Front

2

BK

0.75

Wheel Speed Sensor Supply Voltage Left Front

Wheel Speed Sensor (WSS) - LR


Object Number: 1989573  Size: CH

Connector Part Information

Pin

Wire Colour

Wire Size

Function

1

BN/BK

0.5

Wheel Speed Sensor Signal Left Rear

2

GY

0.5

Wheel Speed Sensor Supply Voltage Left Rear

Wheel Speed Sensor (WSS) - RF


Object Number: 1989573  Size: CH

Connector Part Information

Pin

Wire Colour

Wire Size

Function

1

BN

0.75

Wheel Speed Sensor Signal Right Front

2

BK

0.75

Wheel Speed Sensor Supply Voltage Right Front

Wheel Speed Sensor (WSS) - RR


Object Number: 1989573  Size: CH

Connector Part Information

Pin

Wire Colour

Wire Size

Function

1

BN

0.5

Wheel Speed Sensor Signal Right Rear

2

GY

0.5

Wheel Speed Sensor Supply Voltage Right Rear

Yaw Rate and Lateral Acceleration Sensor


Object Number: 1989575  Size: CH

Connector Part Information

Pin

Wire Colour

Wire Size

Function

1

D-GN

0.5

5-V Reference

2

L-GN/BK

0.5

Yaw Rate Sensor Test Control

3

L-BU

0.5

Communication Enable Relay Supply Voltage

4

BN/WH

0.5

Yaw Rate Signal

5

PU/WH

0.5

Combined Vehicle Inertial Sensor Signal (Lat/Long Rate)

6

BK/BU

0.5

Low Reference