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MULTIPORT FUEL INJECTION(MFI) DIAGNOSIS TSB Revision MULTIPORT FUEL INJECTION (MFI) <3.0L> 13B-385 TECHNICAL DESCRIPTION • The PCM is checks the open circuit of battery DTC SET CONDITIONS Check Conditions • Ignition switch: ON Judgement Criteria • The backup memory is lost. TROUBLESHOOTING HINTS (The most likely • Open or shorted battery backup line, or loose • PCM failed. DIAGNOSIS Required Special Tools STEP 1. Check if the battery terminal is disconnected. Q: Is the battery terminal disconnected before reading the DTC? and then in 10 seconds turn the ignition switch to the NO : Go to Step 3. STEP 2. Using scan tool MB991502, read the diagnostic CAUTION To prevent damage to scan tool MB991502, always turn the Q: Is the DTC P1603 is output? YES : Go to Step 3. AK000280 CONNECTOR : C-40 PCM AV AC003081 AB 16 PIN MB991502 |