GM Service Manual Online
For 1990-2009 cars only
Table 1: Electronic Brake Control Module Scan Tool Data Parameters
Table 2: Electronic Brake Control Module Scan Tool Output Controls

Electronic Brake Control Module Scan Tool Data Parameters

Parameter

System State

Expected Value

Definition

Operating Conditions: Ignition ON

ABS Active

--

No

The scan tool displays Yes or No. Yes is displayed if the ABS system is engaged.

Brake Pressure Sensor

--

Varies

This displays kPa (psi). This is the current brake pressure.

Brake Pressure Sensor Input

--

Varies

The scan tool displays 0-5 Volts. This is the current voltage at the brake pressure sensor input.

Brake Temp Status

--

Normal

The scan tool displays Normal or Overtemp. This is the current state of the brake temperature.

DRP Active

--

No

The scan tool displays Yes or No. This is the state of the dynamic rear proportioning (DRP).

DRP Disabled

--

No

The scan tool displays Yes or No. This is the state of the dynamic rear proportioning (DRP).

Ignition Voltage Signal

--

Varies

This displays Volts. This is the current ignition voltage.

Lateral Accelerometer Signal

--

Varies

This displays Volts or g. This is the current signal of the lateral accelerometer.

Left TCS Isolation Solenoid Command

--

Off

This displays On or Off. This is the state of the left traction control system (TCS) isolation solenoid.

Left TCS Prime Solenoid Command

--

Off

This displays On or Off. This is the state of the left traction control system (TCS) prime solenoid.

LF Wheel Speed Sensor

--

0 km/h (0 mph)

This displays km/h (mph). This is the current speed of the left front wheel speed sensor.

LF Inlet Solenoid Command

--

Off

The scan tool displays On or Off. On is displayed when the left front inlet valve solenoid is commanded on.

LF Outlet Solenoid Command

--

Off

The scan tool displays On or Off. On is displayed when the left front outlet valve solenoid is commanded on.

LR Wheel Speed Sensor

--

OK

The scan tool displays OK or Low. This is the state of the washer fluid level.

LR Inlet Solenoid Command

--

Off

The scan tool displays On or Off. On is displayed when the left rear inlet valve solenoid is commanded on.

LR Outlet Solenoid Command

--

Off

The scan tool displays On or Off. On is displayed when the left rear outlet valve solenoid is commanded on.

Pump Motor Relay Command

--

Off

The scan tool displays On or Off. On is displayed when the pump motor relay is commanded to be engaged.

Pump Motor Relay Feedback Signal

--

Off

The scan tool displays On or Off. This is the current state of the pump motor relay feedback signal.

RF Inlet Solenoid

--

Off

The scan tool displays On or Off. On is displayed when the right front inlet valve solenoid is commanded on.

RF Outlet Solenoid

--

Off

The scan tool displays On or Off. On is displayed when the right front outlet valve solenoid is commanded on.

RF Wheel Speed Sensor

--

0 km/h (0 mph)

This displays km/h (mph). This is the current speed of the right front wheel speed sensor.

Right TCS Isolation Solenoid Command

--

Off

This displays On or Off. This is the state of the right traction control system (TCS) isolation solenoid.

Right TCS Prime Solenoid Command

--

Off

This displays On or Off. This is the state of the right traction control system (TCS) prime solenoid.

Rough Road Detected

--

Varies

This displays g.

RR Inlet Solenoid Command

--

Off

The scan tool displays On or Off. On is displayed when the right rear inlet valve solenoid is commanded on.

RR Outlet Solenoid Command

--

Off

The scan tool displays On or Off. On is displayed when the right rear outlet valve solenoid is commanded on.

RR Wheel Speed Sensor

--

0 km/h (0 mph)

This displays km/h (mph). This is the current speed of the right front wheel speed sensor.

Solenoid Relay Command

--

Off

The scan tool displays On or Off. This is the current state of the solenoid relay.

Solenoid Relay Feedback Signal

--

Off

The scan tool displays On or Off. This is the current state of the solenoid relay feedback signal.

Steering Position Sensor

--

Varies

This displays degrees. This is the signal received from the steering angle sensor.

Steering Sensor Is Centered

--

Yes

The scan tool displays Yes or No. Yes is displayed if the steering sensor is centered.

SWPS Signal A

--

Varies

This displays Volts. This is the current steering wheel position sensor (SWPS) signal A voltage.

SWPS Signal B

--

Varies

This displays Volts. This is the current steering wheel position sensor (SWPS) signal B voltage.

Switched Battery Voltage Signal

--

Varies

This displays Volts. This is the current switched battery voltage.

TCS Active

--

No

The scan tool displays Yes or No. This is the state of the traction control system (TCS).

Vehicle Speed

--

0 km/h (0 mph)

This displays km/h (mph). This is the current speed of the vehicle.

VES Actuator Commanded

--

Varies

This displays amps. This is the current supplied when the VES actuator is engaged.

VES Actuator Feedback Signal

--

Varies

This displays amps. This is the current supplied when the VES actuator is engaged.

VES Failed

--

No

The scan tool displays Yes or No. Yes is displayed if the variable effort steering (VES) has failed.

VSES Active

--

No

The scan tool displays Yes or No. The scan tool displays Yes when VSES is active, and No when VSES is inactive.

VSES Enabled

--

No

The scan tool displays Yes or No. The scan tool displays Yes when VSES is enabled, and No when VSES is disabled.

Yaw Rate Sensor

--

°/sec

This displays °/sec. This is the current yaw rate speed.

Yaw Rate Signal

--

Varies

This displays Volts. This is the current yaw rate signal voltage.

Electronic Brake Control Module Scan Tool Output Controls

Scan Tool Output Control

Description

Automated Bleed

This is used in order to bleed ABS hydraulics. Refer to Antilock Brake System Automated Bleed Procedure .

LF Inlet Valve Solenoid

Commands the solenoid ON and OFF.

LF Outlet Valve Solenoid

Commands the solenoid ON and OFF.

LR Inlet Valve Solenoid

Commands the solenoid ON and OFF.

LR Outlet Valve Solenoid

Commands the solenoid ON and OFF.

RF Inlet Valve Solenoid

Commands the solenoid ON and OFF.

RF Outlet Valve Solenoid

Commands the solenoid ON and OFF.

RR Inlet Valve Solenoid

Commands the solenoid ON and OFF.

RR Outlet Valve Solenoid

Commands the solenoid ON and OFF.