Inspection Procedure 11

Inspection Procedure 11: Traction Control Function or Skid Control Function Inoperative.

TECHNICAL DESCRIPTION (COMMENT)
In case of this trouble symptom, traction control function or skid control function operation may be disabled. Diagnostic trouble code may be set by the traction control function or skid control function.

PROBABLE CAUSES
^ Low battery output
^ Wiring harness or connector failure of CAN bus line
^ ASC-ECU malfunction

DIAGNOSIS

Required Special Tools:
^ MB991958: Scan Tool (M.U.T.-III Sub Assembly)
^ MB991824: Vehicle Communication Interface (V.C.I.)
^ MB991827: M.U.T.-III USB Cable
^ MB991910: M.U.T.-III Main Harness A

STEP 1. M.U.T.-III diagnostic trouble code
Q: Is any DTC set?
YES: Troubleshoot for the relevant diagnostic trouble code.
NO: Go to Step 2.

STEP 2. Hydraulic unit (HU) check
Refer to P.35C-188.
Q: Is the check result normal?
YES: Go to Step 3.
NO: Repair the brake pipe or replace ASC-ECU.

STEP 3. Operation check
Q: Does traction control function or skid control function operate normally?
YES: The procedure is complete.
NO: Check the brake system related components except the ASC.