Nissan Juke Service and Repair Manual : B terminal circuit

Description

“B” terminal circuit supplies power to charge the battery and to operate the vehicle’s electrical system.

Diagnosis Procedure

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.

2.CHECK “B” TERMINAL CIRCUIT

Check voltage between alternator “B” terminal and ground.

Is the inspection result normal?


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?


Is the inspection result normal? YES >> “B” terminal circuit is normal. Refer to CHG-12, "GASOLINE ENGINE MODELS : Work Flow" (gasoline engine models) or CHG-15, "DIESEL ENGINE MODELS : Work Flow" (diesel engine models).

NO >> Check harness between battery and alternator for poor continuity.

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