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DIAGNOSIS TSB Revision ACTIVE SKID CONTROL SYSTEM (ASC) 35C-39 DTC SET CONDITIONS ASC-ECU monitors the electric current in each wheel speed . PROBABLE CAUSES Current trouble • Damaged wiring harness and connectors • Noise interference • Malfunction of wheel speed sensor • ASC-ECU malfunction Past trouble • Carry out the diagnosis with a particular emphasis on the wiring harness and connector failures between ASC-ECU − How to Use Troubleshooting/Inspection Service Points ). 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 • MB991997: ASC check harness STEP 1. Using scan tool MB991958, diagnose the CAN bus YES : Go to Step 3. − Troubleshooting .) After repairing the CAN bus line, go to Step 2. STEP 2. DTC recheck after repairing the CAN bus line YES : Go to Step 3. STEP 3. Scan tool service data .) • Item No.04: RR wheel speed sensor Q: Is the check result normal? |