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MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS TSB Revision MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE> 13A-395 STEP 3. Check the trouble symptoms. Diagnostic Function − OBD-II Drive Cycle − Pattern 23 (2) Check the diagnostic trouble code (DTC). YES : 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 . Then go to Step 19. NO : It can be assumed that this malfunction is intermittent. Refer to GROUP 00, How to Use − How to Cope with Intermittent Malfunctions . STEP 4. Check harness connector B-22 at exhaust YES : Go to Step 5. Connector Inspection . Then go to Step 19. STEP 5. Measure the sensor supply voltage at exhaust side. (2) Turn the ignition switch to the "ON" position. • Voltage should be between 4.9 and 5.1 volts. (4) Turn the ignition switch to the "LOCK" (OFF) position. YES : Go to Step 9. STEP 6. Check harness connector B-10 at ECM for YES : Go to Step 7. Connector Inspection . Then go to Step 19. AK604205 1 2 3 AC B-22 harness |