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P1550 BATTERY CURRENT SENSOR EC-409 < COMPONENT DIAGNOSIS > [VQ37VHR] C D E F G H I J K L M A EC N P O 2. CHECK BATTERY CURRENT SENSOR POWER SUPPLY CIRCUIT-I 1. Disconnect battery current sensor harness connector. 2. Turn ignition switch ON. 3. Check the voltage between battery current sensor harness connector and ground. Is the inspection result normal? YES >> GO TO 5. NO >> GO TO 3. 3. CHECK BATTERY CURRENT SENSOR POWER SUPPLY CIRCUIT-II 1. Turn ignition switch OFF. 2. Disconnect ECM harness connector. 3. Check the continuity between battery current sensor harness connector and ECM harness connector. 4. Also check harness for short to ground and short to power. Is the inspection result normal? YES >> GO TO 5. NO >> GO TO 4. 4. DETECT MALFUNCTIONING PART Check the following. >> Repair open circuit or short to ground or short to power in harness connectors. 5. CHECK BATTERY CURRENT SENSOR GROUND CIRCUIT FOR OPEN AND SHORT 1. Turn ignition switch OFF. 2. Disconnect ECM harness connector. 3. Check the continuity between battery current sensor harness connector and ECM harness connector. 4. Also check harness for short to ground and short to power. Is the inspection result normal? YES >> GO TO 7. NO >> GO TO 6. 6. DETECT MALFUNCTIONING PART Check the following. >> Repair open circuit or short to ground or short to power in harness or connectors. 7. CHECK BATTERY CURRENT SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT Battery current sensor Ground Voltage Connector Terminal E21 1 Ground Approx. 5V Battery current sensor ECM Continuity Connector Terminal Connector Terminal E21 1 F102 64 Existed Battery current sensor ECM Continuity Connector Terminal Connector Terminal E21 2 F102 95 Existed |