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TROUBLESHOOTING ACTIVE STABILITY CONTROL SYSTEM (ASC) 35C-9 OPERATION • The wheel speed sensor is a kind of a pulse gen- erator. It consists of magnetic encoders (a plate • The pulse signals, which the wheel speed sensor creates, are sent to ASC-ECU. ASC-ECU uses DIAGNOSIS CODE SET CONDITIONS ASC-ECU monitors voltage fluctuation in each wheel PROBABLE CAUSES Current trouble • Damaged wiring harness and connectors • Malfunction of the wheel speed sensor • ASC-ECU malfunction Past trouble • Carry out diagnosis with particular emphasis on wiring harness and connector failures between − How to Use Troubleshoot- DIAGNOSTIC PROCEDURE STEP 1. M.U.T.-III CAN bus diagnostics Q: Is the check result normal? YES : Go to Step 3. NO : Repair the CAN bus lines. (Refer to GROUP completion, go to Step 2. STEP 2. Diagnosis code recheck after resetting Q: Is the diagnosis code No. C1200, C1205, C1210 or C1215 set? Go to Step 3. NO : This diagnosis is complete. STEP 3. M.U.T.-III data list • (When the code No. C1200 is set) Item 01: FR wheel speed sensor • (When the code No. 1205 is set) Item 02: FL wheel speed sensor • (When the code No. 1210 is set) Item 03: RR wheel speed sensor • (When the code No. C1215 is set) Item 04: RL wheel speed sensor Q: Is the check result normal? YES : Intermittent malfunction (Refer to GROUP 00 − How to Cope with Intermittent .) NO : Go to Step 4. Main Index Group TOC |