Diagnosis Procedure

VDC function, TCS function, ABS function, EBD function, Brake limited slip differential (BLSD) function, Brake assist function, hill start assist function or Brake force distribution function operates in excessive operation frequency.

1. CHECK BRAKING FORCE 

   Check brake force using a brake tester.

   Is the inspection result normal?

   YES

   GO TO 2.

   NO

   Check brake system.

2. CHECK FRONT AND REAR AXLE 

   Check that there is no excessive looseness in front and rear axle.

   • Front axle: Refer to FRONT WHEEL HUB AND KNUCKLE : Periodic Maintenance Operation .
   • Rear axle: Refer to REAR WHEEL HUB AND HOUSING : Periodic Maintenance Operation .

   Is the inspection result normal?

   YES

   GO TO 3.

   NO

   Repair / replace error-detecting of front or rear axle part.

3. CHECK WHEEL SENSOR 

   Check wheel sensor.

   • Check installation and damage of wheel sensor.
   • Check connection of wheel sensor harness connector.
   • Check terminal of wheel sensor harness connector.

   Is the inspection result normal?

   YES

   GO TO 4.

   NO

   Repair installation or replace wheel sensor.

   • Front wheel sensor: Refer to FRONT WHEEL SENSOR : Removal & Installation .
   • Rear wheel sensor: Refer to REAR WHEEL SENSOR : Removal & 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 & Installation .
   • Rear sensor rotor: Refer to REAR SENSOR ROTOR : Removal & Installation .
5. CHECK WARNING LAMP TURNS OFF 

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

   CAUTION: Brake warning lamp turns ON when parking brake is operated (parking brake switch is ON) or 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 THE SELF-DIAGNOSIS 

   With CONSULT

   1. Turn the ignition switch OFF -> ON.
      CAUTION:

      • Be sure to wait of 10 seconds after turning ignition switch OFF or ON.
      • Start the engine.
   2. Repeat step 1 two or more times.
   3. Perform self-diagnosis for "ABS".

   Is any DTC detected?

   YES

   Check the DTC. Refer to DTC Index .

   NO

   INSPECTION END