GM Service Manual Online
For 1990-2009 cars only

EBCM Control Module Scan Tool Output Controls

Scan Tool Output Control

Additional Menu Selection(s)

Description

ABS Motor Test

--

Used in order to command the ABS pump motor On or Off.

Automated Bleed Procedure

--

Used in order to bleed ABS hydraulics. Refer to Antilock Brake System Automated Bleed Procedure .

LF Inlet Valve Solenoid

Solenoid Test

Commands the solenoid ON and OFF.

LF Outlet Valve Solenoid

Solenoid Test

Commands the solenoid ON and OFF.

LR Inlet Valve Solenoid

Solenoid Test

Commands the solenoid ON and OFF.

LR Outlet Valve Solenoid

Solenoid Test

Commands the solenoid ON and OFF.

RF Inlet Valve Solenoid

Solenoid Test

Commands the solenoid ON and OFF.

RF Outlet Valve Solenoid

Solenoid Test

Commands the solenoid ON and OFF.

RR Inlet Valve Solenoid

Solenoid Test

Commands the solenoid ON and OFF.

EBCM Control Module Scan Tool Output Controls

Parameter

Operating Conditions

Expected Value

Definition

Ignition is ON, engine OFF, and vehicle is stationary

ABS Active

--

Yes

The scan tool displays Yes/No. The scan tool displays No when not active.

--

No

ABS Failed

--

Yes

The scan tool will display Yes/No depending on the state of the ABS indicator.

--

No

Battery Voltage

--

12 Volts

The scan tool displays 0-14 Volts. The scan tool displays approximately 12 Volts when the ignition is ON.

Brake Fluid Pressure Sensor Input

Brake applied

0.5V

The scan tool displays 0-5 Volts. The scan tool displays approximately 0.5 Volts when the ignition is ON.

Engine running, brake applied

1.5V

Brake Switch

Brake pedal applied

0.5V

The scan tool displays 0-5 Volts. The scan tool displays approximately 0.5 Volts when the ignition is ON and the brake pedal is not applied.

Brake pedal not applied

0.7V

Delivered Torque

Engine OFF

88%

The scan tool displays 0-100 percent. The scan tool displays the duty cycle of the Delivered Torque PWM signal. The duty cycle of the signal is used to transmit how much engine torque the ECM is delivering. Normal values are between 10 and 90 percent duty cycle.

Engine idling

10%

EBD Failed

--

Yes

The scan tool displays Yes/No. The failed status of the EBD. Indicates if the EBCM disabled EBD due to a malfunction.

--

No

ESP Active

--

Yes

The scan tool displays Yes/No. The scan tool displays Yes when ESP is active, and No when ESP is inactive.

--

No

ESP Failed

--

Yes

The scan tool will display Yes/No depending on the state of the ABS indicator.

--

No

ESP Off Request

TCS/ESP Switch activated

Active

The scan tool will display Active/Inactive depending on the position of the TCS/ESP Switch.

TCS/ESP Switch deactivated

Inactive

FL Inlet Valve Commanded

--

Active

The scan tool displays Active/Inactive. The scan tool displays Active when the left front inlet valve solenoid is commanded on.

--

Inactive

FL Inlet Valve Feedback

--

Active

The scan tool displays Active/Inactive. Indicates the actual state of the left front inlet valve solenoid.

--

Inactive

FL Inlet Valve Heat Protection

--

Active

The scan tool displays Active/Inactive. Indicates the actual state of left front inlet valve heat protection.

--

Inactive

FL Outlet Valve Commanded

--

Active

The scan tool displays Active/Inactive. The scan tool displays Active when the left front outlet valve solenoid is commanded on.

--

Inactive

FL Outlet Valve Feedback

--

Active

The scan tool displays Active/Inactive. Indicates the actual state of the left front outlet valve solenoid.

--

Inactive

FL Outlet Valve Heat Protection

--

Active

The scan tool displays Active/Inactive. Indicates the actual state of left front outlet valve heat protection.

--

Inactive

FL Wheel Acceleration

--

0.000 m/s² (0.000 ft/s²)

The scan tool displays 0-XXX m/s² . The scan tool displays 0 m/s² (0 ft/s²) when the vehicle is not moving or is moving at speeds less than or equal to 0 m/s² (0 ft/s²).

FR Wheel Acceleration

--

FL/FR TC/ESP Priming Valve Commanded

--

Active

The scan tool will display Active/Inactive. The scan tool displays Active when the FL/FR TC/ESP priming valve is commanded on.

--

Inactive

FL/FR TC/ESP Priming Valve Feedback

--

Active

The scan tool displays Active/Inactive. The scan tool displays active when FL/FR TC/ESP priming valve feedback is commanded on.

--

Inactive

FL/FR TC/ESP Switch Over Valve Commanded

--

Active

The scan tool will display Active/Inactive. The scan tool displays Active when the FL/FR TC/ESP switch over valve is commanded on.

--

Inactive

FL/FR TC/ESP Switch Over Valve Feedback

--

Active

The scan tool will display Active/Inactive. The scan tool displays Active when the FL/FR TC/ESP switch over valve feedback is commanded on.

--

Inactive

Front Left Wheel Speed

--

0 km/h (0 mph)

The scan tool displays 0-327 km/h (0-204 mph). The scan tool displays 0 km/h (0 mph) when the vehicle is not moving or is moving at speeds less than or equal to 0 km/h (0 mph).

Front Right Wheel Speed

--

FR Inlet Valve Commanded

--

Active

The scan tool displays Active/Inactive. The scan tool displays Active when the right front inlet valve solenoid is commanded on.

--

Inactive

FR Inlet Valve Feedback

--

Active

The scan tool displays Active/Inactive. Indicates the actual state of the right front inlet valve solenoid.

--

Inactive

FR Inlet Valve Heat Protection

--

Active

The scan tool displays Active/Inactive. Indicates the actual state of right front inlet valve heat protection.

--

Inactive

FR Outlet Valve Commanded

--

Active

The scan tool displays Active/Inactive. The scan tool displays Active when the right front outlet valve solenoid is commanded on.

--

Inactive

FR Outlet Valve Feedback

--

Active

The scan tool displays Active/Inactive. Indicates the actual state of the right front outlet valve solenoid.

--

Inactive

FR Outlet Valve Heat Protection

--

Active

The scan tool displays Active/Inactive. Indicates the actual state of right front outlet valve heat protection.

--

Inactive

Lateral Acceleration Input

--

2.5V

The scan tool will display 0-5 Volts. The scan tool displays approximately 2.5 volts when the ignition is ON, and the vehicle is stationary.

Pump Relay Commanded

--

Active

The scan tool displays Active/Inactive. The scan tool displays Active when the pump relay is commanded on.

--

Inactive

Pump Relay Feedback

--

Active

The scan tool displays Active/Inactive. Indicates the actual state of the pump relay.

--

Inactive

Pump Voltage

--

Voltage

The scan tool will display Voltage when the pump motor is active.

Rear Left Wheel Speed

--

0 km/h (0 mph)

The scan tool displays 0-327 km/h (0-204 mph). The scan tool displays 0 km/h (0 mph) when the vehicle is not moving or is moving at speeds less than or equal to 0 km/h (0 mph).

Rear Right Wheel Speed

--

Requested Torque

--

99%

The scan tool displays 0-100 percent. The scan tool displays the duty cycle of the Requested Torque PWM signal. The duty cycle of the signal is used to transmit how much engine torque the EBCM has requested.

RL Inlet Valve Commanded

--

Active

The scan tool displays Active/Inactive. The scan tool displays Active when the left rear inlet valve solenoid is commanded on.

--

Inactive

RL Inlet Valve Feedback

--

Active

The scan tool displays Active/Inactive. Indicates the actual state of the left rear inlet valve solenoid.

--

Inactive

RL Inlet Valve Heat Protection

--

Active

The scan tool displays Active/Inactive. Indicates the actual state of left rear inlet valve heat protection.

--

Inactive

RL Outlet Valve Commanded

--

Active

The scan tool displays Active/Inactive. The scan tool displays Active when the left rear outlet valve solenoid is commanded on.

--

Inactive

RL Outlet Valve Feedback

--

Active

The scan tool displays Active/Inactive. Indicates the actual state of the left rear outlet valve solenoid.

--

Inactive

RL Outlet Valve Heat Protection

--

Active

The scan tool displays Active/Inactive. Indicates the actual state of left rear outlet valve heat protection.

--

Inactive

RL Wheel Acceleration

--

0.000 m/s² (0.000 ft/s²)

The scan tool displays 0-XXX m/s² . The scan tool displays 0 m/s² (0 ft/s²) when the vehicle is not moving or is moving at speeds less than or equal to 0 m/s² (0 ft/s²).

RR Wheel Acceleration

--

RL/RR TC/ESP Priming Valve Commanded

--

Active

The scan tool displays Active when the RL/RR TC/ESP priming valve is commanded on.

--

Inactive

RL/RR TC/ESP Priming Valve Feedback

--

Active

The scan tool displays Active when the RL/RR TC/ESP priming valve feedback jis commanded on.

--

Inactive

RL/RR TC/ESP Switch Over Valve Commanded

--

Active

The scan tool displays Active when the RL/RR TC/ESP switch over valve is commanded on.

--

Inactive

RL/RR TC/ESP Switch Over Valve Feedback

--

Active

The scan tool displays Active when the RL/RR TC/ESP switch over valve feedback is commanded on.

--

Inactive

RR Inlet Valve Commanded

--

Active

The scan tool displays Active/Inactive. The scan tool displays Active when the right rear inlet valve solenoid is commanded on.

--

Inactive

RR Inlet Valve Feedback

--

Active

The scan tool displays Active/Inactive. Indicates the actual state of the right rear inlet valve solenoid.

--

Inactive

RR Inlet Valve Heat Protection

--

Active

The scan tool displays Active/Inactive. Indicates the actual state of right rear inlet valve heat protection.

--

Inactive

RR Outlet Valve Commanded

--

Active

The scan tool displays Active/Inactive. The scan tool displays Active when the right rear outlet valve solenoid is commanded on.

--

Inactive

RR Outlet Valve Feedback

--

Active

The scan tool displays Active/Inactive. Indicates the actual state of the right rear outlet valve solenoid.

--

Inactive

RR Outlet Valve Heat Protection

--

Active

The scan tool displays Active/Inactive. Indicates the actual state of right rear outlet valve heat protection.

--

Inactive

Steering Angle

Steering wheel at centre

The scan tool will display Steering Angle Sensor. The scan tool will display the signal received from the Steering Angle Sensor.

Steering wheel at left lock

-500°

Steering wheel at right lock

500°

Valve Relay Commanded

--

Active

The scan tool displays Active/Inactive. The scan tool displays Active when the valve relay is commanded on.

--

Inactive

Valve Relay Feedback

--

Active

The scan tool displays Active/Inactive. Indicates the actual state of the valve relay.

--

Inactive

Yaw Rate sensor Input

--

2.5V

The scan tool will display Volts, depending on the angle of the vehicle.