GM Service Manual Online
For 1990-2009 cars only

The electronic brake control module (EBCM) Scan Tool Data Lists contain all the antilock brake system related parameters that are available on the scan tool. The parameters in the list are arranged in alphabetical order. The column, "Data List," indicates the location of the parameter within the scan tool menu selections.

Use the EBCM Scan Tool Data Lists as directed by a diagnostic table or in order to supplement the diagnostic procedures. Begin all the diagnostic procedures with the antilock brake system (ABS) Diagnostic Starting Point. Use the EBCM Scan Tool Data Lists only after the following is determined:

    • There is no published DTC procedure nor published symptom procedure for the customer concern.
        OR
    • The DTC or symptom diagnostic procedure indicated by the diagnostic system check does not resolve the customer concern.

The Typical Data Values are obtained from a properly operating vehicle under the conditions specified in the first row of the Scan Tool Data List table. Comparison of the parameter values from the suspect vehicle with the Typical Data Values may reveal the source of the customer concern.

The ID Information menu is located on the EBCM main screen.

EBCM Scan Tool Data List

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Operating Conditions: Ignition is ON, engine OFF, and vehicle is stationary

ABS Active

ABS

Yes/No

No

ABS Failed

ABS

On/Off

Off

ABS Warning Lamp

ABS

On/Off

Off

Brake Fluid Level Status

ABS

OK/Low

OK

Brake Pressure Sensor Input

VSES Data

Volts

0

BPP Signal

ABS

Released/Applied

Released

Battery Voltage Signal

ABS

Volts

B+

Delivered Torque

TCS

%

0-100%

DRP Active

ABS

Yes/No

No

DRP Disabled

ABS

Yes/No

No

Engine Drag Control Active

TCS

No/Yes

No

Engine Drag Control Failed

TCS

No/Yes

No

Lateral Accelerometer Signal

VSES Data

m/s

Varies

LF Inlet Solenoid Command

ABS

Active/Inactive

Inactive

LF Outlet Solenoid Command

ABS

Active/Inactive

Inactive

LF Wheel Speed Sensor

ABS/TCS

km/h or mph

0

LR Wheel Speed Sensor

ABS/TCS

km/h or mph

0

LR Inlet Solenoid Command

ABS

Active/Inactive

Inactive

LR Outlet Solenoid Command

ABS

Active/Inactive

Inactive

Panic Brake Assist Failed

ABS

No/Yes

No

Pump Motor Command Voltage

ABS

B+/0

B+

Requested Torque

TCS

%

0-100%

RF Inlet Solenoid

ABS

Active/Inactive

Inactive

RF Outlet Solenoid

ABS

Active/Inactive

Inactive

RF Wheel Speed Sensor

ABS/TCS

km/h or mph

0

RR Inlet Solenoid Command

ABS

Active/Inactive

Inactive

RR Outlet Solenoid Command

ABS

Active/Inactive

Inactive

RR Wheel Speed Sensor

ABS/TCS

km/h or mph

0

Steering Wheel Position 1

VSES Data

Degrees

Varies 0-360

Steering Wheel Position 2

VSES Data

Degrees

Varies 0-360

TCS Active

TCS

No/Yes

No

TCS Failed

TCS

No/Yes

No

TCS Warning Lamp

TCS

On/Off

Off

VSES Active

VSES Data

Yes/No

Yes

VSES Failed

VSES Data

Yes/No

No

Yaw Rate Sensor

VSES Data

°/sec

Varies

The electronic brake control module (EBCM) Scan Tool Data Lists contain all the antilock brake system related parameters that are available on the scan tool. The parameters in the list are arranged in alphabetical order. The column, "Data List," indicates the location of the parameter within the scan tool menu selections.

Use the EBCM Scan Tool Data Lists as directed by a diagnostic table or in order to supplement the diagnostic procedures. Begin all the diagnostic procedures with the antilock brake system (ABS) Diagnostic Starting Point. Use the EBCM Scan Tool Data Lists only after the following is determined:

    • There is no published DTC procedure nor published symptom procedure for the customer concern.
        OR
    • The DTC or symptom diagnostic procedure indicated by the diagnostic system check does not resolve the customer concern.

The Typical Data Values are obtained from a properly operating vehicle under the conditions specified in the first row of the Scan Tool Data List table. Comparison of the parameter values from the suspect vehicle with the Typical Data Values may reveal the source of the customer concern.

The ID Information menu is located on the EBCM main screen.

EBCM Scan Tool Data List

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Operating Conditions: Ignition is ON, engine OFF, and vehicle is stationary

ABS Active

ABS

Yes/No

No

ABS Failed

ABS

On/Off

Off

ABS Warning Lamp

ABS

On/Off

Off

Brake Fluid Level Status

ABS

OK/Low

OK

Brake Pressure Sensor Input

VSES Data

Volts

0

BPP Signal

ABS

Released/Applied

Released

Battery Voltage Signal

ABS

Volts

B+

Delivered Torque

TCS

%

0-100%

DRP Active

ABS

Yes/No

No

DRP Disabled

ABS

Yes/No

No

Engine Drag Control Active

TCS

No/Yes

No

Engine Drag Control Failed

TCS

No/Yes

No

Lateral Accelerometer Signal

VSES Data

Volts

2.5 Volts

LF Inlet Solenoid Command

ABS

Active/Inactive

Inactive

LF Outlet Solenoid Command

ABS

Active/Inactive

Inactive

LF Wheel Speed Sensor

ABS/TCS

km/h or mph

0

LR Wheel Speed Sensor

ABS/TCS

km/h or mph

0

LR Inlet Solenoid Command

ABS

Active/Inactive

Inactive

LR Outlet Solenoid Command

ABS

Active/Inactive

Inactive

Panic Brake Assist Failed

ABS

No/Yes

No

Pump Motor Command Voltage

ABS

B+/0

B+

Requested Torque

TCS

%

0-100%

RF Inlet Solenoid

ABS

Active/Inactive

Inactive

RF Outlet Solenoid

ABS

Active/Inactive

Inactive

RF Wheel Speed Sensor

ABS/TCS

km/h or mph

0

RR Inlet Solenoid Command

ABS

Active/Inactive

Inactive

RR Outlet Solenoid Command

ABS

Active/Inactive

Inactive

RR Wheel Speed Sensor

ABS/TCS

km/h or mph

0

Steering Wheel Position 1

VSES Data

Degrees

Varies 0-360

Steering Wheel Position 2

VSES Data

Degrees

Varies 0-360

TCS Active

TCS

No/Yes

No

TCS Failed

TCS

No/Yes

No

TCS Warning Lamp

TCS

On/Off

Off

VSES Active

VSES Data

Yes/No

Yes

VSES Failed

VSES Data

Yes/No

No

Yaw Rate Sensor

VSES Data

Volts

2.5 Volts