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MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS TSB Revision MULTIPORT FUEL INJECTION (MFI) <3.8L ENGINE> 13B-981 INSPECTION PROCEDURE 6: Starts Up and Dies. . COMMENT • In such cases as the above, the cause is usually improper air/fuel mixture. It is possible, though . TROUBLESHOOTING HINTS (The most likely • Malfunction of the ignition system. • Malfunction of the injector system. • Contaminated fuel. • Poor compression. • Dirtiness around throttle valve. • Malfunction of the PCM. DIAGNOSIS Required Special Tools: • MB991958: Scan Tool (MUT-III Sub Assembly) • MB991824: V.C.I. • MB991827: USB Cable • MB991910: Main Harness A STEP 1. Measure the battery positive voltage. • The voltage should be 8 volts or more. Q: Does the voltage remain greater than 8 volts while the engine is cranked? − Battery Check STEP 2. Using scan tool MB991958, read the diagnostic CAUTION To prevent damage to scan tool MB991958, always turn the (3) Read the DTC. YES : Refer to Diagnostic Trouble Code Chart NO : Go to Step 3. AC305412 AB MB991910 DATA LINK CONNECTOR MB991824 MB991827 |