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DIAGNOSIS TSB Revision WIRELESS CONTROL MODULE (WCM) 42C-75 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. Using scan tool MB991958, diagnose the CAN bus YES : Go to Step 3. − CAN Bus Diagnostics table ). On completion, go to Step 2. STEP 2. Diagnostic trouble code recheck after resetting YES : Go to Step 3. STEP 3. Check for other diagnostic trouble code. (vehicles without ASC) or Refer to GROUP 35C, diagnostic trouble code chart (vehicles with ASC)> Q: Is the check result normal? YES : Go to Step 4. ASC-ECU.<Refer to GROUP 35B, diagnostic trouble (vehicles without ASC) or Refer to GROUP 35C, diagnostic trouble code chart (vehicles with ASC)>. Then go to Step 5. STEP 4. Check for other diagnostic trouble code. − diagnostic trouble code chart ). Q: Is the check result normal? YES : Replace the WCM and register ID codes (Refer to ). Then go to Step 5. NO : Carry out the troubleshooting (Refer to GROUP 54A − diagnostic trouble code chart ). Then go to Step 5. |