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"
    AV branch line circuit
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    STRG branch line circuit
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    Other materials:

    B2581, B2582 intake sensor
    Description Intake Sensor The intake sensor is located on the evaporator. It converts air temperature after it passes through the evaporator into a resistance value which is then input to the A/C auto amp. Intake Sensor Circuit DTC Logic DTC DETECTION LOGIC NOTE: If DTC is di ...

    Condenser
    CONDENSER CONDENSER : Removal and Installation REMOVAL Discharge the refrigerant. Refer to HA-28, "Recycle Refrigerant". Remove the RH hoodledge cover. Remove the front bumper fascia. Refer to EXT-16, "Removal and Installation". Disconnect the high-pressure pipe from the condenser pip ...

    Seat belt warning light
    Both the driver's and passenger's front seats are equipped with a seat belt warning light. The warning light, located on the instrument panel, will show the status of the driver and passenger seat belt. NOTE: The front passenger seat belt warning light will not light up if the seat is not ...

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    Nissan Maxima Service and Repair Manual

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