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MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS TSB Revision MULTIPORT FUEL INJECTION (MFI) <3.8L ENGINE> 13B-944 STEP 6. Using scan tool MB991958, check data list item 78: CAUTION To prevent damage to scan tool MB991958, always turn the 78, Accelerator Pedal Position Sensor (main). • Output voltage is between 0.735 and 1.335 volts when foot is released from accelerator pedal. • Output voltage is 4.0 volts or higher when accelerator pedal is fully depressed. (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 − How to Cope with Intermittent Malfunctions . NO : Replace the PCM. Then go to Step 11. STEP 7. Check harness connector B-20 at PCM for YES : Go to Step 8. . Then go to Step 11. AC305412 AB MB991910 DATA LINK CONNECTOR MB991824 MB991827 AK303092 25 21 24 23 22 29 28 27 26 34 33 32 31 30 38 37 36 35 43 42 41 40 39 CONNECTOR: B-20 B-20 PCM AB HARNESS CONNECTOR: AIR CLEANER |