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MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS TSB Revision MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE> 13A-71 TROUBLESHOOTING HINTS (The most • Exhaust engine oil control valve failed. • Open or shorted exhaust engine oil control valve circuit, harness damage, or connector damage. • ECM failed. DIAGNOSIS Required Special Tools: • MB992110:Power Plant ECU CHeck Harness STEP 1. Check harness connector B-26 at the exhaust YES : Go to Step 2. Connector Inspection P.00E-2 . Then go to Step 10. STEP 2. Check the exhaust engine oil control valve. B-26. (2) Measure the resistance between exhaust engine oil control valve side connector terminal No. 1 and No. 2. Standard value: 6.9 − 7.9 ohms [at 20°C (68°F)] Q: Is the measured resistance between 6.9 and 7.9 ohms [at 20 °C (68°F)]? YES : Go to Step 3. to Step 10. STEP 3. Measure the power supply voltage at exhaust side. (2) Turn the ignition switch to the "ON" position. • Voltage should be battery positive voltage. (4) Turn the ignition switch to the "LOCK" (OFF) position. present? AK704144 1 2 AB Engine oil control AK704148 2 1 AB B-26 harness |