AIR CONDITIONING SYSTEM > IG Power Source Circuit

for Preparation Click here


DESCRIPTION

Power is supplied to the air conditioning amplifier assembly when the power switch is turned on (IG).
The power is used for operating the air conditioning amplifier assembly, servo motors, etc.

WIRING DIAGRAM


E219976E04


INSPECTION PROCEDURE

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

HINT:
Turn the power switch on (IG) before inspection. Check the IG1 No. 1 relay or battery if the power source does not change to on (IG).

1.CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER ASSEMBLY - POWER SOURCE)

  1. Disconnect the air conditioning amplifier assembly connector.

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

    Standard Voltage:
    Tester Connection
    		Condition
    		Specified Condition
    H85-1 (IG+) - Body ground
    		Power switch off
    		Below 1 V
    H85-1 (IG+) - Body ground
    		Power switch on (IG)
    		11 to 14 V



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


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

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    H85-14 (GND) - Body ground
    		Always
    		Below 1 Ω



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

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