GM Service Manual Online
For 1990-2009 cars only

Electronic Brake Control Module Scan Tool Data Parameters

Parameter

System State

Expected Value

Definition

Operating Conditions: Engine ON

ABS Pump Motor

--

On

The scan tool displays On or Off.

ABS Warning Lamp

--

Off

The scan tool displays On or Off.

Brake Switch

--

Released

The scan tool displays Released or Applied.

Brake Warning Lamp

--

Off

The scan tool displays On or Off.

Engine RPM

--

Varies

The scan tool displays RPM.

Lateral Accelerometer Input

--

Varies

The scan tool displays M/S squared (2).

Left Front Wheel Speed

--

Varies

The scan tool displays km/h (mph).

Left Rear Wheel Speed

--

Varies

The scan tool displays km/h (mph).

LF ABS Hold Solenoid

--

Off

The scan tool displays On or Off.

LF ABS Release Solenoid

--

Off

The scan tool displays On or Off.

LF Wheel Speed Sensor

--

Normal

This displays Normal or Open.

LR ABS Hold Solenoid

--

Off

This displays On or Off.

LR ABS Release Solenoid

--

Off

This displays On or Off.

LR Wheel Speed Sensor

--

Normal

The scan tool displays Normal or Open.

Master Cylinder Pressure Sensor Input

--

Varies

The scan tool displays Volts.

Parking Brake Switch

--

Applied

The scan tool displays Released or Applied.

Right Front Wheel Speed

--

Varies

The scan tool displays km/h (mph).

Right Rear Wheel Speed

--

Varies

The scan tool displays km/h (mph).

RF ABS Hold Solenoid

--

Off

The scan tool displays On or Off.

RF ABS Release Solenoid

--

Off

The scan tool displays On or Off.

RF Wheel Speed Sensor

--

Normal

The scan tool displays Normal or Open.

RR ABS Hold Solenoid

--

Off

The scan tool displays On or Off.

RR ABS Release Solenoid

--

Off

The scan tool displays On or Off.

RR Wheel Speed Sensor

--

Normal

The scan tool displays Normal or Open.

Steering Wheel Angle

--

Varies

The scan tool displays Deg.

Solenoid Relay State

--

Off

The scan tool displays On or Off.

TCS Active

--

No

The scan tool displays Yes or No.

TCS Active Lamp

--

Off

This displays On or Off.

Throttle Angle

--

Varies

The scan tool displays Percent (%).

Vehicle Speed

--

Varies

The scan tool displays km/h (mph).

VSES Warning Lamp

--

No

The scan tool displays Yes or No.

Yaw Rate Sensor

--

Varies

This displays deg./sec.