ABS

Scan Tool Data


ABS Control Module


The parameter data below are values measured with the scan tool when the normally operating vehicle is under the following conditions. When taking measurements for comparison by using the scan tool, be sure to check that the vehicle is under the following conditions.
- Parking brake lever is pulled up fully and wheels are blocked with chocks.
- Ignition switch is at ON position.
- Air conditioner turns OFF (if equipped).
- Power steering is not operating (steering wheel is at straight-ahead position and released) (if equipped).
- All electrical loads turn OFF (except ignition).
- ABS control module has no DTC.
- ABS is not operating. (Normal braking operation)






Scan Tool Data Definition

Battery Volt (V)
Battery Voltage is an analog input signal read by the ABS control module. Certain ABS control module functions will be modified if the battery voltage falls below or rises above programmed thresholds.
Pump Motor Driver (V)
This parameter indicates the operational condition of the pump motor driver (transistor).
RF Wheel Speed, LF Wheel Speed, RR Wheel Speed and LF Wheel Speed (km/h, MPH)
Wheel speed is an ABS control module internal parameter. It is computed by reference pulses from the wheel speed sensor.
Brake Switch (ON, OFF)
This switch signal informs the ABS control module whether the brake is active or not.
G Sensor (G)
The G-Sensor converts gravity during the vehicle acceleration / deceleration in to a voltage conditions and controls the ABS for 4WD model.