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Home >> Nissan-Datsun >> 2004 >> Altima S, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 937 (Starting & Charging System) >> Generator >> Trouble Diagnoses with Battery/Starting/Charging System Tester >> Diagnostic Procedure 2 >> Check Battery Circuit

Check Battery Circuit

WARNING: This page is about a different car, the 2008 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK BATTERY CIRCUIT CONNECTION 

    Check to see if "B" terminal is clean and tight.

    OK or NG 

    OK: GO TO 2. Confirm repair by performing complete Battery/Starting/Charging system test.

    NG: Repair terminal "B" connection.

  2. CHECK BATTERY CIRCUIT 

    Check voltage between generator connector F2 terminal B and ground using a digital circuit tester.

    Fig 1: Checking Voltage Between Generator Connector F2 Terminal B And Ground
    G04917784Courtesy of NISSAN MOTOR CO., U.S.A.

    Battery voltage should exist. 

    OK or NG 

    OK: GO TO 3.

    NG: Check the following.

    • 120A fusible link (letter a  , located in fusible link box)
    • Harness for open or short between generator and fusible link
  3. CHECK VOLTAGE DROP ON BATTERY CIRCUIT 

    Check voltage between generator connector F2 terminal B and battery positive terminal using a digital tester.

    Fig 2: Checking Voltage Between Generator Connector F2 Terminal B And Battery Positive Terminal
    G04917785Courtesy of NISSAN MOTOR CO., U.S.A.

    With engine running at idle and warm: Less than 0.2V 

    OK or NG 

    OK: Replace the generator. Confirm repair by performing complete Battery/Starting/Charging system test.

    NG: Check harness between the battery and the generator for poor continuity.