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Home >> Nissan-Datsun >> 2004 >> Altima S, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 925 (LAN System) >> Service Information >> Trouble Diagnosis >> Unified Meter and A/C Amp. Branch Line Circuit >> Inspection Procedure

Inspection Procedure

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 CONNECTOR 
    1. Turn the ignition switch OFF.
    2. Disconnect the battery cable from the negative terminal.
    3. Check the terminals and connectors of the unified meter and A/C amp. for damage, bend and loose connection (unit side and connector side).

      4. OK or NG 

      OK: GO TO 2.

      NG: Repair the terminal and connector.

  2. CHECK HARNESS FOR OPEN CIRCUIT 
    1. Disconnect the connector of unified meter and A/C amp.
    2. Check the resistance between the unified meter and A/C amp. harness connector terminals.
      HARNESS FOR OPEN CIRCUIT

      Unified meter and A/C amp. harness connector Resistance (Ω)
      Connector No. Terminal No.
      M49 1 11 Approx. 54 - 66

      3. OK or NG 

      OK: GO TO 3.

      NG: Repair the unified meter and A/C amp. branch line.

  3. CHECK POWER SUPPLY AND GROUND CIRCUIT 

    Check the power supply and the ground circuit of the unified meter and A/C amp. Refer to SCHEMATIC

    OK or NG 

    OK:

    • Present error: Replace the unified meter and A/C amp. Refer to UNIFIED METER AND A/C AMP .
    • Past error: Error was detected in the unified meter and A/C amp. branch line.

    NG: Repair the power supply and the ground circuit.

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