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EC-374 < DTC/CIRCUIT DIAGNOSIS > [VQ35DE] P1553 BATTERY CURRENT SENSOR P1553 BATTERY CURRENT SENSOR Description INFOID:0000000009720115 The power generation voltage variable control enables fuel consumption to be decreased by reducing the CAUTION: Never connect the electrical component or the ground wire directly to the battery terminal. The con- DTC Logic INFOID:0000000009720116 DTC DETECTION LOGIC NOTE: DTC CONFIRMATION PROCEDURE 1. PRECONDITIONING If DTC Confirmation Procedure has been previously conducted, always perform the following before conduct- Turn ignition switch OFF and wait at least 10 seconds. 2. Turn ignition switch ON. 3. Turn ignition switch OFF and wait at least 10 seconds. TESTING CONDITION: >> GO TO 2. 2. PERFORM DTC CONFIRMATION PROCEDURE 1. Start engine and wait at least 10 seconds. 2. Check 1st trip DTC. Is 1st trip DTC detected? YES >> Go to NO >> INSPECTION END Diagnosis Procedure INFOID:0000000009720117 1. CHECK GROUND CONNECTION 1. Turn ignition switch OFF. 2. Check ground connection E38. Refer to Ground Inspection in . Is the inspection result normal? YES >> GO TO 2. NO >> Repair or replace ground connection. 2. CHECK BATTERY CURRENT SENSOR POWER SUPPLY CIRCUIT DTC No. Trouble diagnosis name DTC detecting condition Possible cause P1553 Battery current sensor perfor- The signal voltage transmitted from the • Harness or connectors (The sensor circuit is open or shorted.) • Battery current sensor |