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MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS TSB Revision MULTIPORT FUEL INJECTION (MFI) <3.8L ENGINE> 13B-957 OBD-II DRIVE CYCLE PATTERN . TROUBLESHOOTING HINTS (The most likely • CAN line harness damage or connector damage. • Combination meter failed. • PCM failed. DIAGNOSIS Required Special Tools: • MB991958: Scan tool (MUT-III Sub Assembly) • MB991824: V.C.I. • MB991827: USB Cable • MB991910: Main Harness A STEP 1. Using scan tool MB991958, diagnose CAN bus CAUTION To prevent damage to scan tool MB991958, always turn the (3) Diagnose CAN bus line. YES : Go to Step 2. Bus Diagnostics Table . Then go to Step 6. AC305412 AB MB991910 DATA LINK CONNECTOR MB991824 MB991827 |