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MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS TSB Revision MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE> 13B-793 • 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. STEP 2. Using scan tool MB991958, check data list. . a. Item 32: Knock retard. (3) Turn the ignition switch to the "LOCK" (OFF) position. YES : Go to Step 3. − Knock Sensor Circuit Low (Bank 1) , DTC P0328 − Knock Sensor Circuit High (Bank 1) , DTC P0332 − Knock , DTC P0333 − Knock Sensor Circuit High (Bank 2) AK700568AB MB991824 MB991827 MB991910 Data link |