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HANDS-FREE CELLULAR PHONE SYSTEM TSB Revision CHASSIS ELECTRICAL 54A-477 STEP 1. Using scan tool MB991958, diagnose the CAN bus CAUTION To prevent damage to scan tool MB991958, always turn the Scan Tool (M.U.T.-III) ." (2) Turn the ignition switch to the "ON" position. YES : Go to Step 2. ). STEP 2. Using scan tool MB991958, read the SRS-ECU YES : Troubleshoot the SRS (Refer to GROUP 52B, Troubleshooting ). NO : Go to Step 3. STEP 3. Recheck for diagnostic trouble code. position. (3) Check if DTC is set. YES : Replace the hands free module. to GROUP 00 − How to use Troubleshooting/inspection Service Points − How to Cope with Intermittent Malfunction AC608435 Data link connector MB991827 MB991824 MB991910 AB |