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MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS TSB Revision MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE> 13A-339 STEP 6. Using scan tool MB991958, check data list item 15: terminals No. 3, No. 4, No. 5, and No. 6. (5) Set scan tool MB991958 to the data reading mode for item 15, Throttle Position Sensor (sub). • Output voltage should be 4.0 volts or more when the throttle valve is fully closed with your finger. • Output voltage should be 1.0 volt or less when the throt- tle valve is fully open with your finger. (6) 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 − How to Cope with Intermittent Malfunctions . NO : Replace the ECM. When the ECM is replaced, register the ID code. Refer to GROUP 42B, Diagnosis or GROUP 42C, Diagnosis − ID Codes Registration Judgment Table <Vehicles with STEP 7. Check harness connector B-10 at ECM for YES : Go to Step 8. Connector Inspection . Then go to Step 11. STEP 8. Check for harness damage between throttle YES : Go to Step 9. STEP 9. Check for open circuit, short circuit to ground and YES : Go to Step 10. |