LEMON Manuals: Even more car manuals for everyone
Home >> Toyota >> 2011 >> Highlander Hybrid >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Air Conditioning (Diagnostic Codes & Circuit Tests) (Hybrid) >> AIR CONDITIONING SYSTEM (for Manual Air Conditioning System) >> IG Power Source Circuit >> Procedure

IG Power Source Circuit: Procedure

  1. INSPECT FUSE (A/C NO. 2) 
    1. Remove the A/C No. 2 fuse from the instrument panel junction block.
    2. Measure the resistance of the fuse.

      Standard resistance

      Tester Connection Condition Specified Condition
      A/C NO. 2 fuse Always Below 1 Ω

    NG → REPLACE FUSE 

    OK: Go to next step 

  2. CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER - BATTERY) 
    1. Install the A/C No. 2 fuse.
    2. Disconnect the D37 amplifier connector.
      Fig 1: Identifying D37 Air Conditioning Amplifier Connector Terminals
      GTY207464Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Measure the voltage according to the value(s) in the table below.

      Standard voltage

      Tester Connection Condition Specified Condition
      D37-1 (IG+) - Body ground Ignition switch ON 11 to 14 V

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to next step 

  3. CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER - BODY GROUND) 
    1. Disconnect the D38 amplifier connector.
      Fig 2: Identifying D37 & D38 Air Conditioning Amplifier Connectors
      GTY298041Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance according to the value(s) in the table below.

      Standard resistance

      Tester Connection Condition Specified Condition
      D37-14 (GND) - Body ground Always Below 1 Ω
      D38-20 (GND2) - Body ground Always Below 1 Ω

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK → See step   4 

  4. PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to  PROBLEM SYMPTOMS TABLE 
scientia non olet · About LEMON Manuals