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MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS TSB Revision MULTIPORT FUEL INJECTION (MFI) 13A-659 • Open or shorted power steering pressure switch circuit, harness damage, or connector damage. • PCM failed. DIAGNOSIS Required Special Tools: • MB991958: Scan Tool (MUT-III Sub Assembly) • MB991824: V.C.I. • MB991827: USB Cable • MB991911: Main Harness B STEP 1. Using scan tool MB991958, check data list item 27: CAUTION To prevent damage to scan tool MB991958, always turn the 27, Power Steering Pressure Switch. • If the steering wheel is not turned while idling, "OFF" will be displayed. • If the steering wheel is turned while idling, "ON" will be displayed. (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 NO : Go to Step 2. AK302970 AB MB991911 MB991824 MB991827 |