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MAIN POWER SUPPLY AND GROUND CIRCUIT EC-413 [YD (WITHOUT EURO-OBD)] C D E F G H I J K L M A EC 8. DETECT MALFUNCTIONING PART Check the following. ● Harness connectors E62, F12 ● 20A fuse ● Harness for open or short between ECM relay and battery >> Repair open circuit or short to ground or short to power in harness or connectors. 9. CHECK OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT 1. Disconnect ECM harness connector. 2. Check harness continuity between ECM terminals 105, 113 and ECM relay terminal 2. Refer to Wiring 3. Also check harness for short to ground and short to power. OK or NG OK >> GO TO 10. NG >> Repair open circuit or short to ground or short to power in harness or connectors. 10. CHECK ECM POWER SUPPLY CIRCUIT-IV 1. Check harness continuity between ECM terminals 119, 120 and ECM relay terminal 7. Refer to Wiring 2. Also check harness for short to ground and short to power. OK or NG OK >> GO TO 11. NG >> Repair open circuit or short to ground or short to power in harness or connectors. 11. CHECK ECM RELAY Refer to EC-414, "Component Inspection" . OK or NG OK >> GO TO 12. NG >> Replace ECM relay. 12. CHECK ECM POWER SUPPLY CIRCUIT-V Check voltage between ECM terminal 121 and ground with CON- OK or NG OK >> GO TO 14. NG >> GO TO 13. Continuity should exist. Continuity should exist. Voltage: Battery voltage MBIB0026E |