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MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS TSB Revision MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE> 13A-763 STEP 4. Check the ignition coil. − On-vehicle Service − Ignition Coil Check . Q: Are there any abnormalities? YES : Replace the ignition coil. Then confirm that the malfunction symptom is eliminated. NO : Check for occurrence of ignition leak. Then confirm that the malfunction symptom is eliminated. Inspection procedure 16: Knocking . COMMENT • Incases such as the above, the cause is probably that the detonation control is defective or the heat . TROUBLESHOOTING HINTS (The most • Defective knock sensor. • Incorrect heat value of the spark plug. • Poor compression. • Malfunction of the ECM. DIAGNOSIS Required Special Tools: • MB991958: Scan Tool (M.U.T.-III Sub Assembly) • MB991824: V.C.I. • MB991827: USB Cable • MB991910: Main Harness A STEP 1. Using the scan tool MB991958, read the CAUTION To prevent damage to scan tool MB991958, always turn the YES : Refer to Diagnostic Trouble Code Chart . NO : Go to Step 2. AK700568AB MB991824 MB991827 MB991910 Data link |