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MULTIPORT FUEL INJECTION(MFI) DIAGNOSIS TSB Revision MULTIPORT FUEL INJECTION (MFI) <3.0L> 13B-41 TECHNICAL DESCRIPTION • The barometric pressure sensor outputs a • The PCM checks whether this voltage is within a DTC SET CONDITIONS Check Conditions • Two seconds or more have passed since the • Battery positive voltage is higher than 8 volts. Judgement Criteria • Barometric pressure sensor output voltage has TROUBLESHOOTING HINTS (The most likely • Barometric pressure sensor failed. • Open or shorted barometric pressure sensor • PCM failed. DIAGNOSIS Required Special Tools STEP 1. Using scan tool MB991502, check data list item 25: CAUTION To prevent damage to scan tool MB991502, always turn the 25, Barometric Pressure Sensor. • When altitude is 0 m(0 foot), 101 kPa. • When altitude is 600 m(1,969 feet), 95 kPa. • When altitude is 1,200 m(3,937 feet), 88 kPa. • When altitude is 1,800 m(5,906 feet), 81 kPa. (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 : NO: Go to Step 2. AC003081 AB 16 PIN MB991502 |