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POWER SUPPLY AND GROUND CIRCUIT EC-673 < COMPONENT DIAGNOSIS > [QR25DE EXCEPT FOR CALIFORNIA] C D E F G H I J K L M A EC N P O POWER SUPPLY AND GROUND CIRCUIT Diagnosis Procedure INFOID:0000000004349639 1. INSPECTION START Start engine. YES >> GO TO 8. NO >> GO TO 2. 2. CHECK ECM POWER SUPPLY CIRCUIT-I 1. Turn ignition switch OFF and then ON. 2. Check the voltage between ECM harness connector and ground. Is the inspection result normal? YES >> GO TO 4. NO >> GO TO 3. 3. DETECT MALFUNCTIONING PART Check the following. • IPDM E/R harness connector E18 • 10A fuse (No. 35) • Harness for open or short between ECM and fuse >> Repair open circuit or short to ground or short to power in harness or connectors. 4. CHECK GROUND CONNECTION-I 1. Turn ignition switch OFF. 2. Check ground connection E9. Refer to Ground Inspection in . Is the inspection result normal? YES >> GO TO 5. NO >> Repair or replace ground connection. 5. CHECK ECM GROUND CIRCUIT FOR OPEN AND SHORT-I 1. Disconnect ECM harness connectors. 2. Check the continuity between ECM harness connector and ground. 3. Also check harness for short to power. YES >> GO TO 7. ECM Ground Voltage Connector Terminal E10 93 Ground Battery voltage PBIA9561J ECM Ground Continuity Connector Terminal F14 12 Ground Existed 16 E10 107 108 111 112 |