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MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS TSB Revision MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE> 13A-371 STEP 2. Using scan tool MB991502, read the diagnostic CAUTION To prevent damage to scan tool MB991502, always turn the Q: Is the DTC is output? YES : Refer to, Diagnostic Trouble Code Chart ( NO : Go to Step 3. STEP 3. Checking by operating the accelerator pedal. Q: Does the engine stall right after the accelerator pedal is released? NO : Go to Step 4. STEP 4. Check the engine idling. Q: Is the idling good enough after warm up? YES : Go to Step 5. − Unstable Idle (Rough Idle, Hunting) ( STEP 5. Check the idle air control (IAC) motor operation ° C (68 ° F) or below. NOTE: If necessary, you can disconnect the engine coolant ° C (68 ° F) or below. (2) Check the operation sound of the IAC motor can be heard after the ignition is switched to the "ON" position (but • An operation sound should be heard. (3) Turn the ignition switch to the "LOCK" (OFF) position. Q: Did you hear the operation sound? YES : Go to Step 6. − Idle Control System RPM Lower Than Expected ( ), DTC P0507 − Idle Control System RPM Higher Than Expected ( AKX01177 16 PIN MB991502 AB ACX02519 AI IDLE AIR CONNECTOR:B-34 |