GM Service Manual Online
For 1990-2009 cars only
Table 1: Electronic Brake Control Module (EBCM)
Table 2: Instrument Panel Cluster (IPC)
Table 3: Engine Control Module (ECM)

Electronic Brake Control Module (EBCM)

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Ignition ON, engine OFF, and steering wheel straight

ABS Active

ABS Data

Yes/No

No

ABS Failed

ABS Data

Yes/No

No

Battery Voltage

ABS Data

Volts

12

BPP Signal

ABS Data

Released/Applied

Released

Brake Fluid Level Status

ABS Data

OK/Low

OK

Brake Pressure Sensor Input

VSES Data

Volts

0

Delivered Torque

TCS Data

%

 

DRP Active

ABS Data

Yes/No

No

DRP Disabled

ABS Data

Yes/No

No

Engine Drag Control Failed

ABS Data

Yes/No

No

Lateral Accelerometer Signal

VSES Data

Volts

2.5

LF Inlet Solenoid Command

ABS Data

ON/OFF

OFF

LF Outlet Solenoid Command

ABS Data

ON/OFF

OFF

LF Wheel Speed

    • ABS Data
    • TCS Data
    • VSES Data

km/h or mph

0

LR Inlet Solenoid Command

ABS Data

ON/OFF

OFF

LR Outlet Solenoid Command

ABS Data

ON/OFF

OFF

LR Wheel Speed

    • ABS Data
    • TCS Data
    • VSES Data

km/h or mph

0

Panic Brake Assist Failed

ABS Data

Yes/No

No

Pump Motor Commanded Voltage

    • ABS Data
    • TCS Data

Volts

12

Requested Torque

TCS Data

%

90

RF Inlet Solenoid Command

ABS Data

ON/OFF

OFF

RF Outlet Solenoid Command

ABS Data

ON/OFF

OFF

RF Wheel Speed

    • ABS Data
    • TCS Data
    • VSES Data

km/h or mph

0

RR Inlet Solenoid Command

ABS Data

ON/OFF

OFF

RR Outlet Solenoid Command

ABS Data

ON/OFF

OFF

RR Wheel Speed

    • ABS Data
    • TCS Data
    • VSES Data

km/h or mph

0

SWPS Signal A

VSES Data

Volts

Varies 0-5

SWPS Signal B

VSES Data

Volts

Varies 0-5

TCS Active

ABS/TCS Data

Yes/No

No

TCS Failed

ABS/TCS Data

Yes/No

No

VSES Active

VSES Data

Yes/No

No

VSES Failed

VSES Data

Yes/No

No

Yaw Rate Sensor

VSES Data

Volts

2.5

Instrument Panel Cluster (IPC)

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Ignition ON, engine OFF

Brake Fluid

Instrument Panel Data

OK/Low

OK

Brake Fluid Switch

Instrument Panel Data

Volts

12

Engine Control Module (ECM)

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Ignition ON, engine OFF

BPP Signal

ECM Data

Released/Applied

Released

TCS Torque Request Signal

ECM Data

%

10

Torque Delivered Signal

ECM Data

%

90