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MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS TSB Revision MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE> 13B-451 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. 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 that 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 4. − Idle Control System RPM Lower Than Expected ( ), DTC P0507 − Idle Control System RPM Higher Than Expected ( STEP 4. Using scan tool MB991502, check actuator test CAUTION To prevent damage to scan tool MB991502, always turn the Test Reference Table ( ). a. Item 01, 02, 03, 04, 05, 06: Injector. (4) Turn the ignition switch to the "LOCK" (OFF) position. Q: Is the actuator operating properly? YES : Go to Step 5. − Injector Circuit Malfunction ( ),DTC P0202, P0204, P0206 − Injector Circuit Malfunction ( AKX01177 16 PIN MB991502 AB ACX02523AI IDLE AIR CONNECTOR:B-34 AKX01177 16 PIN MB991502 AB |