Saturn Scan Tool (PDT) Parameter Info - Antilock Brakes (ABS)
The following ABS data definitions are intended to assist in understanding the data displayed by a scan tool when it is communicating with the ABS controller. A thorough understanding of this data will not only aid in diagnosing ABS related problems, but will also help eliminate repairs.T-CODES/FLAGS
^ Displays a YES with codes or flags are present in the ABS controller.
LF WHEEL SPD MPH
^ Displays the speed of the left front wheel.
RF WHEEL SPD MPH
^ Displays the speed of the right front wheel.
LR WHEEL SPD MPH
^ Displays the speed of the left rear wheel
RR WHEEL SPD MPH
^ Displays the speed of the right rear wheel.
VEHICLE REF MPH
^ Displays the filtered average of all four wheel sped sensors.
LF SOLENOID
^ Displays the status of the left front ABS solenoid. The solenoid is On during an ABS stop.
RF SOLENOID
^ Displays the status of the right front ABS solenoid. The solenoid is On during an ABS stop.
LF COMMANDED AMPS
^ Displays the left front desired motor current during an ABS stop.
LF SENSED AMPS
^ Displays actual left front motor current during an ABS stop.
RF COMMANDED AMPS
^ Displays the right front desired motor current during an ABS stop.
RF SENSED AMPS
^ Displays actual right front motor current during and ABS stop.
REAR COMMANDED
^ Displays in amps, the rear desired motor current during an ABS stop.
REAR SENSED
^ Displays in amps, the rear actual motor current during an ABS stop.
BATTERY ENABLE
^ Displays the ignition voltage to the ABS control module.
LF BRAKE
^ Displays the left front motor direction (up or down) during an ABS stop.
RF BRAKE
^ Displays the right front motor direction (up or down) during an ABS stop.
BRAKE SWITCH
^ Displays the current status of the brake switch, On or Off.
BRAKE SWITCH CYCLE
^ Displays YES if the brake switch has been cycled this ignition cycle.
BRAKE SWITCH OPEN
^ Displays YES when an open brake switch circuit is detected.
ABS TT
^ Displays On when ABS telltale is being commanded on by the ABS control module.
ABS TT FLASHING
^ Displays On when the ABS telltale is flashing.
ENABLE RELAY
^ Displays the status of the ABS enable relay.
ABS STOP
^ Displays YES when the vehicle is in an ABS stop.
BRAKE TT
^ Displays On when the brake telltale is on.
BRAKE TT OPEN
^ Displays On when an open brake telltale circuit is detected.
25 MPH REACHED
^ Displays On when the vehicle has reached 40 km/h (25 mph) during this ignition cycle.