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MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS TSB Revision MULTIPORT FUEL INJECTION (MFI) 13A-197 DIAGNOSIS Required Special Tools: • MB991958: Scan Tool (M.U.T.-III Sub Assembly) • MB991824: V.C.I. • MB992110: Power Plant ECU Check Harness STEP 1. Using scan tool MB991958, check data list item 6: CAUTION To prevent damage to scan tool MB991958, always turn the 6, Engine Coolant Temperature Sensor. • The engine coolant temperature and temperature shown with the scan tool should approximately match. (4) Turn the ignition switch to the "LOCK" (OFF) position. YES : It can be assumed that this malfunction is intermittent. Refer to GROUP 00, How to Use Cope with Intermittent Malfunctions . NO : Go to Step 2. STEP 2. Check harness connector B-08 at the engine YES : Go to Step 3. Connector Inspection . Then go to Step 10. AC608435 Data link connector MB991827 MB991824 MB991910 AB |