Excessive ABS Function Operation Frequency

EXCESSIVE ABS FUNCTION OPERATION FREQUENCY


Diagnosis Procedure

1.CHECK START
Check front and rear brake force distribution using a brake tester. Refer to General Specifications.
Is the inspection result normal?
YES - GO TO 2.
NO - Check brake system.
2.CHECK FRONT AND REAR AXLE
Make sure that there is no excessive play in the front and rear axles.
- Front: refer to Inspection.
- Rear: refer to Testing and Inspection.
Is the inspection result normal?
YES - GO TO 3.
NO - Repair or replace error-detected parts.
3.CHECK WHEEL SENSOR AND SENSOR ROTOR
Check the following.
- Wheel sensor installation for damage.
- Sensor rotor installation for damage.
- Wheel sensor harness connector connection.
- Wheel sensor harness inspection.
Is the inspection result normal?
YES - GO TO 4.
NO - Replace wheel sensor or sensor rotor.
- Front wheel sensor: refer to Exploded View.
- Rear wheel sensor: refer to Exploded View.
- Front sensor rotor: refer to Exploded View.
- Rear sensor rotor: refer to Exploded View.
4.CHECK ABS WARNING LAMP DISPLAY
Make sure that the ABS warning lamp is turned off after the ignition switch is turned ON or when driving.
Is the ABS warning lamp illuminated?
YES - Perform self-diagnosis.
NO - Normal