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

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DESCRIPTION

This is the main power source supplied to the air conditioning amplifier assembly when the ignition switch is ON. This power source is used for operating components, such as air conditioning amplifier assembly.

WIRING DIAGRAM


E146515E05


INSPECTION PROCEDURE

NOTICE:
Inspect fuses for circuits related to this system before the performing the following inspection procedures.

1.INSPECT AIR CONDITIONING AMPLIFIER


    E153753E13

  1. Disconnect the D16 air conditioning amplifier connector.

  1. Turn the ignition switch to ON.

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

    Standard Voltage:
    Tester Connection
    		Switch Condition
    		Specified Condition
    D16-14 (IG+) - D16-24 (GND)
    		Ignition switch ON
    		11 to 14 V

  1. Reconnect the D16 air conditioning amplifier connector

Text in Illustration 
*1
Front view of wire harness connector
(to Air Conditioning Amplifier)


NG
Go to step 2
OK

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

2.CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER - BODY GROUND)
E153753E15

  1. Disconnect the D16 air conditioning amplifier connector.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    D16-24 (GND) - Body ground
    		Always
    		Below 1 Ω

  1. Reconnect the air conditioning amplifier connector.

Text in Illustration 
*1
Front view of wire harness connector
(to Air Conditioning Amplifier)


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPAIR OR REPLACE HARNESS OR CONNECTOR (IG1 RELAY - AIR CONDITIONING AMPLIFIER)