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AIR CONDITIONING SYSTEM (for Automatic Air Conditioning System) IG Power Source Circuit

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DTC Code DTC Name
  IG Power Source Circuit
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DESCRIPTION

The main power source is supplied to the air conditioning amplifier assembly when the ignition switch is turned to ON. The power source is used for operating the air conditioning amplifier assembly, servo motors, etc.

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WIRING DIAGRAM

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INSPECTION PROCEDURE

Note:

Inspect the fuses for circuits related to this system before performing the following inspection procedure.

Tip:

Start the engine before inspection. Check the relays, fuses and battery if the engine does not start.

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PROCEDURE


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    CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER - BATTERY AND BODY GROUND)


    1. A01IO2TE15

      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
      H46-1 (IG+) - Body ground Ignition switch off Below 1 V
      Ignition switch ON 11 to 14 V

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      H46-14 (GND) - Body ground Always Below 1 Ω
      Table 1. Text in Illustration
      *1

      Rear view of wire harness connector

      (to Air Conditioning Amplifier Assembly)

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    REPAIR OR REPLACE HARNESS OR CONNECTOR

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    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLEClick here