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 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.

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Ignition ON, Engine OFF, and vehicle is stationary

ABS Active

ABS Data

Yes/No

No

ABS Failed

ABS Data

Yes/No

No

ABS Warning Indicator

ABS Data

On/Off

Off

Brake Switch

ABS Data

Applied/Released

Released

Brake Temp Status

ABS Data

Normal/Overtemp

Normal

Brake Lining Wear Input

ABS Data

Low/High

Varies

DRP Active

ABS Data

Yes/No

No

DRP Relay Commanded State

ABS Data

On/Off

Off

DRP Relay Feedback State

ABS Data

On/Off

Off

Ignition Voltage

ABS Data

Volts

B+

Left Front Wheel Speed

ABS Data

mph/km/h

0

Left Rear Wheel Speed

ABS Data

mph/km/h

0

LF Inlet Valve Solenoid

ABS Data

Active/Inactive

Inactive

LF Outlet Valve Solenoid

ABS Data

Active/Inactive

Inactive

LR Inlet Valve Solenoid

ABS Data

Active/Inactive

Inactive

LR Outlet Valve Solenoid

ABS Data

Active/Inactive

Inactive

Pump Motor Relay Commanded

ABS Data

On/Off

Off

Pump Motor Relay Feedback

ABS Data

On/Off

Off

Red Brake Warning Indicator

ABS Data

On/Off

Off

Right Front Wheel Speed

ABS Data

mph/km/h

0

Right Rear Wheel Speed

ABS Data

mph/km/h

0

RF Inlet Valve Solenoid

ABS Data

Active/Inactive

Inactive

RF Outlet Valve Solenoid

ABS Data

Active/Inactive

Inactive

RR Inlet Valve Solenoid

ABS Data

Active/Inactive

Inactive

RR Outlet Valve Solenoid

ABS Data

Active/Inactive

Inactive

Solenoid Relay Commanded

ABS Data

On/Off

Off

Solenoid Relay Feedback

ABS Data

On/Off

Off

Switched System Battery

ABS Data

Volts

B+

Vehicle Speed

ABS Data

mph/km/h

Varies