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MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS TSB Revision MULTIPORT FUEL INJECTION (MFI) <3.8L ENGINE> 13B-1060 STEP 3. Using scan tool MB991958, check data list. Reference Table . a. Item 79: Throttle Position Sensor (main). c. Item 78: Accelerator Pedal Position Sensor (main). d. Item 77: Accelerator Pedal Position Sensor (sub). (3) Turn the ignition switch to the "LOCK" (OFF) position. YES : Go to Step 4. symptom is eliminated. STEP 4. Inspection of throttle body (throttle valve area) for YES : Refer to On-vehicle Service − Clean the throttle valve NO : Check the following items, and repair, replace or clean the defective sections. a. Check the ignition coil and spark plugs. Then confirm that the malfunction symptom is eliminated. AC305412 AB MB991910 DATA LINK CONNECTOR MB991824 MB991827 |