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MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS TSB Revision MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE> 13A-503 DIAGNOSIS Required Special Tools: • MB991658: Test Harness Set • MB992110: Power Plant ECU Check Harness STEP 1. Check harness connector B-12 at EGR valve for YES : Go to Step 2. Connector Inspection . Then go to Step 11. STEP 2. Measure the EGR valve motor coil resistance. terminal No. 2 and either terminal No. 1 or terminal No. 3. Standard value: 20 − 24 ohms [at 20°C (68°F)] (3) Measure the resistance between EGR valve connector terminal No. 5 and either terminal No. 4 or terminal No. 6 Standard value: 20 − 24 ohms [at 20°C (68°F)] Q: Is the measured resistance between 20 and 24 ohms [at 20 °C (68°F)]? YES : Go to Step 3. STEP 3. Measure the power supply voltage at EGR valve side. (2) Turn the ignition switch to the "ON" position. ground. • Voltage should be battery positive voltage. (4) Turn the ignition switch to the "LOCK" (OFF) position. present? 1 2 3 4 5 6 1 2 3 4 5 6 AK604459 AB 1 2 3 4 5 6 AK201419 B-12 harness AK |