Excessive Operation Frequency

EXCESSIVE OPERATION FREQUENCY

Description

VDC function, TCS function, ABS function, EBD function, brake limited slip differential (BLSD) function and brake assist function operates in excessive operation frequency.


Diagnosis Procedure


1. CHECK BRAKING FORCE

Check the brake force using a brake tester.
Is the inspection result normal?
YES- GO TO 2.
NO- Check the brake system.

2. CHECK AXLE

Check that there is no excessive looseness in front axle and rear axle.
- Front axle: Refer to "Inspection" Inspection.
- Rear axle: Refer to "Inspection" Inspection.
Is the inspection result normal?
YES- GO TO 3.
NO- Repair or replace error-detected parts.

3. CHECK WHEEL SENSOR

Check the wheel sensor.
- Check the installation and damage of wheel sensor.
- Check the connection of wheel sensor harness connector.
- Check the terminal of wheel sensor harness connector.
Is the inspection result normal?
YES- GO TO 4.
NO-Repair or replace wheel sensor.
- Front wheel sensor: Refer to "FRONT WHEEL SENSOR : Removal and Installation" Removal And Installation.
- Rear wheel sensor: Refer to "REAR WHEEL SENSOR : Removal and Installation" Removal And Installation.

4. CHECK SENSOR ROTOR

Check that there is no looseness, damage or foreign material on sensor rotor.
Is the inspection result normal?
YES- GO TO 5.
NO-Repair installation or replace sensor rotor.
- Front sensor rotor: Refer to "FRONT SENSOR ROTOR : Removal and Installation" Front Sensor Rotor.
- Rear sensor rotor. Refer to "REAR SENSOR ROTOR : Removal and Installation" Rear Sensor Rotor.

5. CHECK WARNING LAMP TURNS OFF

Check that ABS warning lamp, brake warning lamp and VDC warning lamp turn OFF approx. 1 second after power switch is turned ON and stay in OFF status during driving.

CAUTION:
Brake warning lamp turns ON when brake fluid is less than the specified level (brake fluid level switch is ON).
Is the inspection result normal?
YES- Normal
NO- GO TO 6.

6. PERFORM SELF-DIAGNOSIS

With CONSULT
1.Turn the power switch OFF ON.

CAUTION:
- Be sure to wait of 10 seconds after turning power switch OFF or ON.
- Set the vehicle to READY.
2.Repeat step 1 two or more times.
3.Perform self-diagnosis for "ABS".
Is any DTC detected?
YES- Check the DTC.