GM Service Manual Online
For 1990-2009 cars only

Data Display/Definitions

The Scan Tool Data Display/Definitions contains a brief description of all the ABS/ TCS data parameters. The menus available depend on the number and type of system on the vehicle and are listed below in alphanumeric order.

    • ABS DATA
    • TCS DATA
ABS Active: The scan tool displays Yes or No. The scan tool will display Yes when the ABS is active and No during normal vehicle operation.

Brake Fluid Level: The scan tool will display OK/Low depending on the state of the Master Cylinder Fluid Level Switch.

Brake Switch: The scan tool will display Applied or Released depending on the state of the brake switch.

DRP Active: The scan tool will display Yes/No depending on the state of the DRP.

DRP Disabled: The scan tool will display Yes/No depending on the state of the DRP.

Front TCS Isolation Solenoid: The scan tool will display Active/Inactive. This displays the commanded state of the solenoid valve.

Front TCS Prime Solenoid: The scan tool will display Active/Inactive. This displays the commanded of the solenoid valve.

Ignition Voltage: The scan tool displays 0-17 Volts. The scan tool displays the level of ignition voltage at the EBCM.

Left Front Wheel Speed: The scan tool displays 0-255 km/h or (0-158 mph). The scan tool displays the actual speed of the left front wheel.

Left Rear Wheel Speed: The scan tool displays 0-255 km/h or (0-158 mph). The scan tool displays the actual speed of the left rear wheel.

LF Inlet Valve Solenoid Inactive: The scan tool will display Active or Inactive. The scan tool displays the commanded state of the LF inlet solenoid valve.

LF Outlet Valve Solenoid Inactive: The scan tool will display Active or Inactive. The scan tool displays the commanded state of the LF outlet solenoid valve.

Longitudinal Accelerometer Sensor: The scan tool will display Volts. The scan tool displays the longitudinal accelerometer signal received from the sensor.

Loose Service Mode: The scan tool displays Disabled/Enabled. The scan tool displays the switch state.

LR Inlet Valve Solenoid Inactive: The scan tool displays Active or Inactive. The scan tool displays the commanded state of the LR inlet solenoid valve.

LR Outlet Valve Solenoid Inactive: The scan tool displays Active or Inactive. The scan tool displays the commanded state of the LR outlet solenoid valve.

Pump Motor Relay Command: The scan tool display On /Off. This is the commanded state of the relay.

Rear TCS Isolation Solenoid: The scan tool will display Active/Inactive. This will be the commanded state of the solenoid valve.

Rear TCS Prime Solenoid: The scan tool will display Active/Inactive. This will be the commanded state of the solenoid valve.

RF Inlet Valve Solenoid Inactive: The scan tool displays Active or Inactive. The scan tool displays the commanded state of the RF inlet solenoid valve.

RF Outlet Valve Solenoid Inactive: The scan tool displays Active or Inactive. The scan tool displays the commanded state of the RF outlet solenoid valve.

Right Front Wheel Speed: The scan tool displays 0-255 km/h or (0-158 mph). The scan tool displays the actual speed of the right front wheel.

RR Inlet Valve Solenoid Inactive: The scan tool displays Active or Inactive - The scan tool displays the commanded state of the RR inlet solenoid valve.

RR Outlet Valve Solenoid Inactive: The scan tool displays Active or Inactive - The scan tool displays the commanded state of the RR outlet solenoid valve.

Right Rear Wheel Speed: The scan tool displays 0-255 km/h or (0-158 mph). The scan tool displays the actual speed of the right rear wheel.

Solenoid Relay Command: The scan tool will display On/Off depending on the state of the relay.

TCS Active: The scan tool will display Off or On. The scan tool displays On if the TCS indicator is currently being commanded ON.