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EC-258 < COMPONENT DIAGNOSIS > [VQ25DE, VQ35DE] P1550 BATTERY CURRENT SENSOR P1550 BATTERY CURRENT SENSOR Description INFOID:0000000003856732 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:0000000003856733 DTC DETECTION LOGIC NOTE: DTC CONFIRMATION PROCEDURE 1. PRECONDITIONING If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and at wait >> 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:0000000003856734 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 1. Disconnect battery current sensor harness connector. 2. Turn ignition switch ON. 3. Check the voltage between battery current sensor harness connector and ground. DTC No. Trouble diagnosis name DTC detecting condition Possible cause P1550 Battery current sensor circuit The output voltage of the battery current • Harness or connectors (The sensor circuit is open or shorted.) • Battery current sensor |