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AIR CONDITIONING SYSTEM (for Automatic Air Conditioning System) Headlight Signal Circuit

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DTC Code DTC Name
  Headlight Signal Circuit
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DESCRIPTION

The air conditioning amplifier assembly receives the headlight illumination signal and uses the signal to judge electrical load conditions. The electrical load signal is one element of PTC heater control.

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WIRING DIAGRAM

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INSPECTION PROCEDURE

Note:

Check that the headlight comes on when the light control switch is turned to the headlight position before proceeding to the inspection procedure.

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PROCEDURE


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    CHECK HARNESS AND CONNECTOR (HEADLIGHT SIGNAL)


    1. A01ITJBE09

      Disconnect the H46 amplifier connector.

    2. Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      H46-27 (HLS) - Body ground Headlight dimmer switch off 11 to 14 V
      H46-27 (HLS) - Body ground Headlight dimmer switch on Below 1 V
      Table 1. Text in Illustration
      *1

      Rear view of wire harness connector

      (to Air Conditioning Amplifier Assembly)

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    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLEClick here

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    REPAIR OR REPLACE HARNESS OR CONNECTOR