LEMON Manuals: Even more car manuals for everyone
Home >> Toyota >> 2004 >> Highlander Limited, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 903 (Heater & Air Conditioning Control System) >> DTC/Circuit Diagnosis >> Power Supply And Ground Circuit For Controller >> A/C Auto Amp. Component Function Check >> Inspection Flow

Inspection Flow

WARNING: This page is about a different car, the 2013 Nissan Armada. However, it is still accessible from the selected car via links, so may be relevant.
  1. CONFIRM SYMPTOM BY PERFORMING OPERATIONAL CHECK - AUTO MODE 
    1. Press AUTO switch.
    2. Display should indicate AUTO. Confirm that the compressor clutch engages (sound or visual inspection). (Discharge air and blower speed will depend on ambient, in-vehicle and set temperatures.)

      Is the inspection result normal? 

      YES: GO TO  3.

      NO: GO TO 2.

  2. PERFORM COMPLETE OPERATIONAL CHECK 

    Perform a complete operational check and check for any symptoms. Refer to "OPERATIONAL CHECK (FRONT) ".

    Is the inspection result normal? 

    YES: Refer to "HOW TO PERFORM TROUBLE DIAGNOSIS FOR QUICK AND ACCURATE REPAIR ".

    NO: System OK.

  3. CHECK FOR SERVICE BULLETINS 

    Check for any service bulletins.

    : GO TO 4.

  4. CHECK POWER AND GROUND CIRCUIT 

    Check main power supply and ground circuit. Refer to "A/C AUTO AMP POWER AND GROUND DIAGNOSIS PROCEDURE ".

    Is the inspection result normal? 

    YES: System OK.

    NO: Replace A/C auto amp. Refer to "REMOVAL AND INSTALLATION ".