EXCESSIVE ABS FUNCTION OPERATION FREQUENCY

Diagnosis Procedure

1.CHECK START
Check front and rear brake force distribution using a brake tester.
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. Refer to front: See: Maintenance\Wheels and Tires\Wheel Hub\Testing and Inspection\Front Wheel Hub, Rear: See: Maintenance\Wheels and Tires\Wheel Hub\Testing and Inspection\Wheel Hub.
Is the Inspection result normal?
YES >> GO TO 3
NO >> Repair or replace malfunctioning components.
3.CHECK WHEEL SENSOR AND SENSOR ROTOR

Check the following.

• Wheel sensor installation for damage.
• Sensor rotor installation for damage.
• Wheel sensor connector connection.
• Wheel sensor harness Inspection. Is the Inspection result normal?

YES >> GO TO 4
NO >>

• Replace wheel sensor or sensor rotor.
• Repair harness. 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 Inspection result normal?
YES >> System normal.
NO >> Perform self-diagnosis. Refer to See: Scan Tool Testing and Procedures\ABS.