Inspection Procedure 3: ABS system does not operate.


COMMENT
The fail-safe function is probably cancelling ABS system. In this case, M.U.T.-III can be used to retest each system by checking the diagnosis codes.

PROBABLE CAUSES

  • Malfunction of the CAN bus line.
  • Malfunction of the brake system.
  • Malfunction of the ABS-ECU.

DIAGNOSIS

STEP 1. Hydraulic unit check
Refer to .

Q. Is the check result normal?
Go to Step 2.
Connect the brake pipes correctly, repair the external brake lines, or replace the hydraulic unit.

STEP 2. Verify that the condition described by the customer exists.

Q. Can any faults be found with the brake operation?
Check the brake system related components except the ABS system.
The procedure is complete.