Nissan Maxima Service and Repair Manual: HVAC branch line circuit

Diagnosis Procedure

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 A/C auto amp. for damage, bend and loose connection (unit side and connector side).

2.CHECK HARNESS FOR OPEN CIRCUIT

  1. Disconnect the connector of A/C auto amp.
  2. Check the resistance between the A/C auto amp. harness connector terminals.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the A/C auto amp. Refer to the following.

  • Models with color display: HAC-60, "A/C AUTO AMP. : Diagnosis Procedure"
  • Models with monochrome display: HAC-165, "A/C AUTO AMP. : Diagnosis Procedure"
    M&A branch line circuit
    Diagnosis Procedure 1.CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the terminals and connectors of the combination meter for ...

    STRG branch line circuit
    Diagnosis Procedure 1.CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the terminals and connectors of the steering angle sensor ...

    Other materials:

    ECU diagnosis information
    BCM (BODY CONTROL MODULE) Reference Value NOTE: The Signal Tech II Tool (J-50190) can be used to perform the following functions. Refer to the Signal Tech II User Guide for additional information. Activate and display TPMS transmitter IDs Display tire pressure reported by the TPMS tran ...

    ICC system limitations
    WARNING Listed below are the system limitations for the ICC system. Failure to operate the vehicle in accordance with these system limitations could result in serious injury or death. The ICC system is primarily intended for use on straight, dry, open roads with light traffic. It is ...

    BCM (body control module)
    Reference Value NOTE: The Signal Tech II Tool (J-50190) can be used to perform the following functions. Refer to the Signal Tech II User Guide for additional information. Activate and display TPMS transmitter IDs Display tire pressure reported by the TPMS transmitter Read TPMS DTCs Re ...

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    Nissan Maxima Service and Repair Manual

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