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MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS TSB Revision MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE> 13B-395 STEP 1. Using scan tool MB991502, check data list item 95: CAUTION To prevent damage to scan tool MB991502, always turn the 95, Manifold Differential Pressure Sensor. • While engine is idling, pressure should be between 62 (4) Turn the ignition switch to the "LOCK" (OFF) position. Q: Is the sensor operating properly? YES : It can be assumed that this malfunction is intermittent. Refer to GROUP 00, How to Use Troubleshooting/ NO : Go to Step 2. STEP 2. Check connector B-04 at manifold differential YES : Go to Step 3. Connector Inspection ( ). Then go to Step 12. STEP 3. Check the sensor supply voltage at manifold side. (2) Turn the ignition switch to "ON" position. • Voltage should be between 4.8 and 5.2 volts. (4) Turn the ignition switch to "LOCK" (OFF) position. Q: Is the voltage normal? YES : Go to Step 6. AKX01177 16 PIN MB991502 AB ACX02483 CONNECTOR : B-04 MANIFOLD AC AKX01427 3 2 1 B-04 HARNESS AD |