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MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS TSB Revision MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE> 13B-105 DIAGNOSIS Required Special Tools: • MB991316: Test Harness STEP 1. Check harness connector A-33X at the MFI relay, YES : Go to Step 2. Connector Inspection P.00E-2 . Then go to Step 6. STEP 2. Check the right bank heated oxygen sensor connector B-03 and connect test harness special tool, (2) Measure the resistance between right bank heated oxygen sensor (front) connector terminal No. 1 (red clip) and Standard value: 4.5 − 8.0 Ω [at 20°C (68°F)] Q: Is the measured resistance between 4.5 and 8.0 ohms [at 20 °C (68°F)]? YES : Go to Step 3. Then go to Step 6. AK700175 Heated MB991316 Red Blue AB |