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Home >> Toyota >> 2007 >> Avalon Touring >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Air Conditioning >> Air Conditioning System >> Heater Control Panel Power Source Circuit >> Inspection Procedure

Inspection Procedure

  1. CHECK HARNESS AND CONNECTOR (IG+ - BODY GROUND) 
    1. Disconnect the connector from heater control panel LH.
    2. Measure the voltage according to the value(s) in the table below.

      Voltage 

      Fig 1: Identifying Heater Control Panel LH Connector Terminals
      G05004806Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      VOLTAGE SPECIFICATIONS

      Tester connection (Symbols) Condition Specified condition
      E6-1 (IG+) - Body ground Ignition switch on (IG) 10 to 14 V
      E6-1 (IG+) - Body ground Ignition switch off Below 1 V

    Result 

    RESULT DESCRIPTION

    Result Proceed to
    OK A
    NG (w/o Smart key system) B
    NG (w/ Smart key system) C

    B: GO TO STARTING SYSTEM STARTING SYSTEM 

    C: GO TO PUSH BUTTON START SYSTEM SYSTEM DESCRIPTION 

    A: Go to Next Step 

  2. CHECK HARNESS AND CONNECTOR (GND - BODY GROUND) 
    1. Measure the resistance according to the value(s) in the table below.

      Resistance 

      Fig 2: Heater Control Panel LH Connector Wire Harness View
      G05004807Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      RESISTANCE SPECIFICATIONS

      Tester connection (Symbols) Condition Specified condition
      E6-24 (GND) - Body ground Always Below 1 Ω

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN  PROBLEM SYMPTOMS TABLE