For 1990-2009 cars

The ABS scan tool data definitions contain a brief description of all ABS related parameters available on the scan tool. The parameters available on the scan tool are listed below in alphanumeric order.

4WD Status: The scan tool displays Two wheel drive/Four wheel drive. The scan tool displays Two wheel drive when the transfer case is shifted into two wheel drive.
ABS Lamp Command: The scan tool displays On/Off. The scan tool displays On when the ABS indicator is commanded on.
ABS Pump Motor: The scan tool displays On/Off. The scan tool displays On when the ABS pump motor is commanded on.
Battery Voltage: The scan tool displays 9-17.5 Volts. The scan tool displays the approximate voltage supplied by the battery and charging system.
Brake Switch Status: The scan tool displays On/Off. The scan tool displays On when the brake is applied.
Delivered Torque: The scan tool displays 11-91%. The scan tool displays 11% when the PCM provides the minimum percentage of available torque in an attempt to eliminate wheel slip.
Left Front Wheel Speed: The scan tool displays 0-257 km/h (0-160 mph). The scan tool displays 0 km/h (0 mph) when the vehicle is not moving.
LF Dump Valve Command: The scan tool displays On/Off. The scan tool displays On when the left front dump valve solenoid is commanded on.
LF ISO Valve Command: The scan tool displays On/Off. The scan tool displays On when the left front isolation valve solenoid is commanded on.
Longitudinal Accelerometer Sensor Signal: The scan tool displays 0-5 Volts. The scan tool displays 2.5 Volts when the vehicle is not accelerating or decelerating.
Low Trac: TCS Active: The scan tool displays Yes/No. The scan tool displays Yes when the low trac message is displayed.
Rear Dump Valve Command: The scan tool displays On/Off. The scan tool displays On when the rear dump valve solenoid is commanded on.
Rear ISO Valve Command: The scan tool displays On/Off. The scan tool displays On when the rear isolation valve solenoid is commanded on.
Rear Wheel Speed: The scan tool displays 0-257 km/h (0-160 mph). The scan tool displays 0 km/h (0 mph) when the vehicle is not moving.
Requested Torque: The scan tool displays 11-91%. The scan tool displays 11% when the EBCM requests the minimum percentage of available torque in an attempt to eliminate wheel slip.
RF Dump Valve Command: The scan tool displays On/Off. The scan tool displays On when the right front dump valve solenoid is commanded on.
RF ISO Valve Command: The scan tool displays On/Off. The scan tool displays On when the right front isolation valve solenoid is commanded on.
Right Front Wheel Speed: The scan tool displays 0-257 km/h (0-160 mph). The scan tool displays 0 km/h (0 mph) when the vehicle is not moving.
TCS Requested: The scan tool displays Yes/No. The scan tool displays No when the driver has disabled the TCS by pressing the traction control switch.
TCS Failed: The scan tool displays Yes/No. The scan tool displays Yes when the traction fault message is displayed.