2004 Nissan-Datsun Sentra SE-RFACTORY OEM SERVICE PROCEDURE

A/C Does Not Work

WARNING: This page is about a different car, the 2003 Nissan Murano. However, it is still accessible from the selected car via links, so may be relevant.
  1. A/C AND AV SWITCH SELF-DIAGNOSIS 
    1. A/C and AV switch self-diagnosis. Refer to "A/C AND AV SWITCH SELF-DIAGNOSIS FUNCTION  ".

    OK or NG

    1. OK : GO TO 2.
    2. NG : Check the malfunctioning parts.
  2. CHECK COMMUNICATION LINE 
    1. Check AV communication line. Refer to "AV COMMUNICATION LINE CHECK (BETWEEN DISPLAY CONTROL UNIT AND A/C AND AV SWITCH)  ".

    OK or NG

    1. OK : GO TO 3.
    2. NG : Check the malfunctioning parts.
  3. CHECK CAN COMMUNICATION LINE 
    1. Check CAN communication line. Refer to "CAN COMMUNICATION LINE CHECK  ".

    OK or NG

    1. OK : Replace display control unit.
    2. NG : After filling out CAN DIAG SUPPORT MONITOR check sheet, GO TO PRECAUTIONS WHEN USING CONSULT-II .
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.

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