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MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS TSB Revision MULTIPORT FUEL INJECTION (MFI) <3.8L ENGINE> 13B-168 STEP 6. Using scan tool MB991958, check data list item 79: CAUTION To prevent damage to scan tool MB991958, always turn the terminals No. 3, No. 4, No. 5, and No. 6. (6) Set scan tool MB991958 to the data reading mode for item 79, Throttle Position Sensor (main). • Output voltage should be between 0.3 and 0.7 volt when the throttle valve is fully closed with your finger. • Output voltage should be 4.0 volts or more when the throttle valve is fully open with your finger. (7) 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 PCM. Then go to Step 11. STEP 7. Check harness connector B-22 at PCM for Q: Is the harness connector in good condition? YES : Go to Step 8. . Then go to Step 11. AC305412 AB MB991910 DATA LINK CONNECTOR MB991824 MB991827 AK303016 104 96 94 95 93 92 91 99 98 97 103 102 101 100 108 107 106 105 113 112 111 110 109 CONNECTOR: B-22 B-22 (B) PCM AB HARNESS CONNECTOR: AIR CLEANER |