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MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS TSB Revision MULTIPORT FUEL INJECTION (MFI) <3.8L ENGINE> 13B-577 DIAGNOSIS Required Special Tools: • MB991958: Scan Tool (MUT-III Sub Assembly) • MB991824: V.C.I. • MB991827: USB Cable • MB991910: Main Harness A STEP 1. Check harness connector B-120 at the knock Q: Is the harness connector in good condition? YES : Go to Step 2. Connector Inspection . Then go to Step 6. AK303120 1 2 KNOCK SENSOR AB CONNECTOR: B-120 B-120 (GR) HARNESS |