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MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS TSB Revision MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE> 13B-435 DIAGNOSIS Required Special Tool: STEP 1. Check the battery positive voltage. • The voltage is 8 volts or more. Q: Is the voltage normal? YES : Go to Step 2. STEP 2. Using scan tool MB991502, read the diagnostic CAUTION To prevent damage to scan tool MB991502, always turn the Q: Is the DTC is output? YES : Refer to Diagnostic Trouble Code Chart ( ). NO : Go to Step 3. STEP 3. Using scan tool MB991502, check actuator test. Actuator Test Reference Table ( ). a. Item 07: Fuel Pump. (3) Turn the ignition switch to the "LOCK" (OFF) position. Q: Is the actuator operating properly? YES : Go to Step 4. symptom is eliminated. STEP 4. Using scan tool MB991502, check data list. Reference Table ( a. Item 21: Engine Coolant Temperature Sensor. (3) Turn the ignition switch to the "LOCK" (OFF) position. Q: Is the sensor operating properly? YES : Go to Step 5. symptom is eliminated. AKX01177 16 PIN MB991502 AB AKX01177 16 PIN MB991502 AB AKX01177 16 PIN MB991502 AB |