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DIAGNOSIS TSB Revision ACTIVE STABILITY CONTROL SYSTEM (ASC) 35C-259 CAUTION • If there is any problem in the CAN bus lines, an incor- rect diagnostic trouble code may be set. Prior to this − CAN Bus Line Diagnostic Flow • Whenever ECU is replaced, ensure that the CAN bus lines are normal. • When the steering wheel sensor is replaced, always carry out calibration to make ASC-ECU learn the neu- ). . OPERATION • Steering wheel sensor contains the power supply circuit (terminal No.2) for Steering wheel sensor. The power is • When malfunction occurs in Steering wheel sensor power supply, the communication with scan tool becomes unavail- . PROBABLE CAUSES • Damaged wiring harness and connectors • Fuse and fusible link malfunction • Improper tightening of battery terminal • Battery failure • Charging system failed • Steering wheel sensor 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 • MB991997: ASC check harness STEP 1. Connector check: C-209 steering wheel sensor YES : Go to Step 2. |