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CHG B TERMINAL CIRCUIT CHG-9 < COMPONENT DIAGNOSIS > C D E F G H I J K L B A O P N COMPONENT DIAGNOSIS B TERMINAL CIRCUIT Description INFOID:0000000003860521 “B” terminal circuit supplies power to charge the battery and to operate the vehicle’s electrical system. Diagnosis Procedure INFOID:0000000003860522 1. CHECK “B” TERMINAL CONNECTION 1. Turn ignition switch OFF. 2. Check if “B” terminal is clean and tight. Is the inspection result normal? YES >> GO TO 2. NO >> Repair “B” terminal connection. Confirm repair by performing complete Starting/Charging system test. Refer to Technical Service Bulletin. 2. CHECK “B” TERMINAL CIRCUIT Check voltage between alternator “B” terminal and ground. Is the inspection result normal? YES >> GO TO 3. NO >> Check harness for open between alternator and fusible link. 3. CHECK “B” TERMINAL CONNECTION (VOLTAGE DROP TEST) 1. Start engine, then engine running at idle and warm. 2. Check voltage between battery positive terminal and alternator “B” terminal. Is the inspection result normal? YES >> “B” terminal circuit is normal. Refer to . NO >> Check harness between battery and alternator for poor continuity. Terminals Voltage (Approx.) (+) (–) Alternator “B” terminal Terminal F59 1 Ground Battery voltage Terminals Voltage (Approx.) (+) (–) Alternator “B” terminal Terminal Battery positive terminal F59 1 Less than 0.2 V |