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Home >> Toyota >> 2009 >> Avalon XLS >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Air Conditioning >> Air Conditioning System >> Circuit Tests >> 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.

      Standard Voltage 

      STANDARD VOLTAGE SPECIFICATIONS

      Tester Connection 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
      Fig 1: Identifying E6 Heater Control Panel LH (IG+ - Body Ground)
      G05409381Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Result 

      RESULT REFERENCE

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

    B:  Go to STARTING SYSTEM

    C:  Go to PUSH BUTTON START SYSTEM.

    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.

      Standard Resistance 

      STANDARD RESISTANCE SPECIFICATIONS

      Tester Connection Condition Specified Condition
      E6-24 (GND) - Body ground Always Below 1 Ω

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Fig 2: Identifying E6 Heater Control Panel LH (GUD - Body Ground)
    G05004807Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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