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IGNITION SWITCH TSB Revision CHASSIS ELECTRICAL 54A-31 STEP 3. Using scan tool MB991958, read the MFI system CAUTION To prevent damage to scan tool MB991958, always turn the Yes : Refer to GROUP 13A, MFI Diagnosis − Diagnostic Trouble Code Chart or GROUP 13B, MFI Diagnosis − Diagnostic Trouble Code Chart No : Go to Step 4. STEP 4. Attempt to start the engine. YES : The procedure is complete (If no malfunctions are found in all steps, an intermittent malfunction is ). NO : Refer to GROUP 13A, MFI Diagnosis − Symptom Chart or GROUP 13B, MFI Diagnosis − Symptom Chart . If the malfunction is not resolved, replace the immobilizer-ECU. Then register .) The engine should now start. AC305412 AB MB991910 DATA LINK CONNECTOR MB991824 MB991827 |