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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 ON. The power source is used for operating the air conditioning amplifier assembly and servo motor, etc.

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WIRING DIAGRAM


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  1. A01X4W3E17
    Table 1.
    *a from IG1 Relay
    *b A/C COMP
    *c Air Conditioning Amplifier Assembly

    w/ Rear Heater:

  2. A01X4W3E18
    Table 2.
    *a from IG1 Relay
    *b A/C COMP
    *c Air Conditioning Amplifier Assembly

    w/o Rear Heater:

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CAUTION / NOTICE / HINT

Note:

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

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PROCEDURE


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


    1. A01X13LE03

      w/ Rear Heater:


      1. Disconnect the air conditioning amplifier assembly connector.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        E36-1 (GND) - Body ground Always Below 1 Ω

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

        Standard Voltage
        Tester Connection Switch Condition Specified Condition
        E36-5 (IG+) - Body ground Ignition switch off Below 1 V
        E36-5 (IG+) - Body ground Ignition switch ON 11 to 14 V
    2. A01X5A2E01

      w/o Rear Heater:


      1. Disconnect the air conditioning amplifier assembly connector.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        E81-14 (GND) - Body ground Always Below 1 Ω

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

        Standard Voltage
        Tester Connection Switch Condition Specified Condition
        E81-1 (IG+) - Body ground Ignition switch off Below 1 V
        E81-1 (IG+) - Body ground Ignition switch ON 11 to 14 V
      Table 3. Text in Illustration
      *a

      Rear view of wire harness connector

      (to Air Conditioning Amplifier Assembly)

    • OK

      PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE (Click here)

    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR