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MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS TSB Revision MULTIPORT FUEL INJECTION (MFI) 13A-697 STEP 4. Using scan tool MB991958, read the diagnostic again. (3) Turn the ignition switch to the "LOCK" (OFF) position. YES : Replace the ETACS-ECU. When the ECM is replaced, register the ID code. Refer to GROUP 42B, or GROUP 42C, ID Codes Registration Judgment Table <Vehicles with NO : It can be assumed that this malfunction is intermittent of CAN bus line between ECM and ETACS-ECU. Cope with Intermittent Malfunctions . STEP 5. Using scan tool MB991958, read the diagnostic again. (3) Turn the ignition switch to the "LOCK" (OFF) position. YES : Replace the ECM. When the ECM is replaced, register the ID code. Refer to GROUP 42B, ID Code or GROUP 42C, ID Codes Registration Judgment Table <Vehicles with WCM> . Then go to Step 6. NO : It can be assumed that this malfunction is intermittent of CAN bus line between ECM and ETACS-ECU. Cope with Intermittent Malfunctions . STEP 6. Using scan tool MB991958, read the diagnostic again. (3) Turn the ignition switch to the "LOCK" (OFF) position. YES : Retry the troubleshooting. |