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MULTIPORT FUEL INJECTION(MFI) DIAGNOSIS TSB Revision MULTIPORT FUEL INJECTION (MFI) <2.4L> 13A-69 STEP 4. Using scan tool MB991502, check data list item 21: CAUTION To prevent damage to scan tool MB991502, always turn the 21, Engine Coolant Temperature Sensor. • The engine coolant temperature and temperature (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 : Replace the PCM. Then go to Step 14. STEP 5. Check connector B-13 at engine coolant YES : Go to Step 6. Connector Inspection ( ). Then go to Step 14. STEP 6. Check the sensor supply voltage at engine side. (2) Turn the ignition switch to the "ON" position. • Voltage should be between 4.5 and 4.9 volts (4) Turn the ignition switch to the "LOCK" (OFF) position. Q: Is the voltage normal? YES : Go to Step 8. AC003081 AB 16 PIN MB991502 ACX02478 CONNECTOR : B-13 AF ENGINE COOLANT AK000234 B-13 HARNESS 1 2 AD |