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TROUBLESHOOTING MULTIPORT FUEL INJECTION (MFI) 13A-143 FUNCTION In response to the signal from the engine-ECU, TROUBLE JUDGMENT Check Conditions Except the engine stalling The battery voltage is 10 - 16 V. Judgment Criteria If the off surge voltage from the motor coil is not PROBABLE CAUSE Failed EGR control solenoid valve Open/short circuit in EGR control solenoid valve Failed engine-ECU DIAGNOSIS PROCEDURE STEP 1. MUT-II actuator test Refer to Actuator test reference table a. Item 10: EGR control solenoid valve OK: Operating sound can be heard and the Q: Is the check result normal? YES : Intermittent malfunction (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points ). NO : Go to Step 2 . STEP 2. Connector check: B-102 EGR control Q: Is the check result normal? YES : Go to Step 3 . NO : Repair. STEP 3. Measure resistance at B-102 EGR Disconnect connector, and measure at solenoid Resistance between terminal No. 1 and No. 2. OK: 29 - 35 W (at 20 C) Q: Is the check result normal? YES : Go to Step 4 . NO : Replace EGR control solenoid valve. STEP 4. Measure voltage at B-102 EGR control Disconnect connector, and measure at harness Ignition switch: ON Voltage between terminal No. 1 and earth. OK: System voltage Q: Is the check result normal? YES : Go to Step 6 . NO : Go to Step 5 . AK300281 1 2 Harness side B-102 (BR) AB Connector: B-102 AK300281 1 2 Harness side B-102 (BR) AB Connector: B-102 AK300281 1 2 Harness side B-102 (BR) AB Connector: B-102 |