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

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

Yes/No

No

Brake Pressure Sensor

    • TCS
    • VSES

PSI

0

Brake Pressure Sensor Input

    • TCS
    • VSES

Volts

0

Brake Temp Status

    • TCS
    • VSES

Normal/Overheated

Normal

DRP Active

ABS

Yes/No

No

DRP Disabled

ABS

Yes/No

No

EDC Active

TCS

Yes/No

No

Ignition Voltage Signal

    • ABS
    • TCS
    • VSES

Volts

12

Lateral Accelerometer Signal

VSES

g

0

Lateral Accelerometer Signal

VSES

Volts

2.5

LF Inlet Solenoid Command

ABS

On/Off

On

LF Outlet Solenoid Command

ABS

On/Off

On

LF Wheel Speed Sensor

    • ABS
    • TCS
    • VSES

km/h (mph)

0

LR Inlet Solenoid Command

ABS

On/Off

On

LR Outlet Solenoid Command

ABS

On/Off

On

LR Wheel Speed Sensor

    • ABS
    • TCS
    • VSES

km/h (mph)

0

Pump Motor Relay Command

ABS

On/Off

Off

Pump Motor Relay Feedback Signal

ABS

On/Off

Off

RF Inlet Solenoid Command

ABS

On/Off

On

RF Outlet Solenoid Command

ABS

On/Off

On

RF Wheel Speed Sensor

    • ABS
    • TCS
    • VSES

km/h (mph)

0

Rough Road Detected

TCS

Yes/No

No

RR Inlet Solenoid Command

ABS

On/Off

On

RR Outlet Solenoid Command

ABS

On/Off

On

RR Wheel Speed Sensor

    • ABS
    • TCS
    • VSES

km/h (mph)

0

Solenoid Relay

ABS

On/Off

On

Steering Wheel Position Sensor

VSES

Degrees

0

Steering Wheel Position Sensor Centered

VSES

Yes/No

Yes

Switched Battery Voltage Signal

    • ABS
    • TCS
    • VSES

Volts

12

SWPS Signal 1

VSES

Volts

Varies 0-5

SWPS Signal 2

VSES

Volts

Varies 0-5

TCS Active

TCS

Yes/No

No

TCS Active Indicator

TCS

On/Off

Off

TCS Enabled

TCS

Yes/No

Yes

TCS OFF Indicator

TCS

On/Off

Off

VSES Active

VSES

Yes/No

No

VSES Enabled

VSES

Yes/No

No

Vehicle Speed

    • ABS
    • TCS
    • VSES

km/h (mph)

0

Yaw Rate Sensor

VSES

0/sec

0

Yaw Rate Signal

VSES

Volts

2.5

Engine Control Module (ECM)

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Ignition ON, engine OFF.

Delivered Torque

--

%

10

Engine Speed

--

RPM

800

Vehicle Speed Sensor

--

km/h (mph)

0

Body Control Module (BCM)

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Ignition ON, engine OFF.

BPP Status

--

Applied/Release

Released

Brake Fluid Level Sensor

--

OK/Low

OK

TCS Switch

--

Pressed/Released

Released