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

DESCRIPTION

When the engine is started, the generator assembly turns on and a pulsed voltage signal is generated.

This signal is used by the air conditioning amplifier assembly.

The signal expressing the amount of output from the generator assembly is one element of PTC heater control.

WIRING DIAGRAM

A01ISIOE25

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER - GENERATOR)


    1. A01IQNPE03
      Text in Illustration
      *1

      Rear view of wire harness connector

      (to Air Conditioning Amplifier Assembly)
      *2

      Front view of wire harness connector

      (to Generator Assembly)

      Disconnect the H46 amplifier connector.

    2. Disconnect the C26 generator connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      H46-25 (ALT) - C26-3 (M) Always Below 1 Ω
      H46-25 (ALT) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Click here