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

DESCRIPTION

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

WIRING DIAGRAM

INSPECTION PROCEDURE

PROCEDURE

1. INSPECT AIR CONDITIONING AMPLIFIER

   
   
   1. 

      Text in Illustration

      *1	Rear view of wire harness connector (to Air Conditioning Amplifier)

      Disconnect the D15 air conditioning amplifier connector.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition D15-1 (IG+) - D15-14 (GND) Ignition switch ON 11 to 14 V

   3. Reconnect the air conditioning amplifier connector.

      Result

      Result	Proceed to
      OK	A
      NG (w/o Stop and Start System)	B
      NG (w/ Stop and Start System)	C

   
   

   B

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

   C

   GO TO STOP AND START SYSTEM Click here

   A

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

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

   
   
   1. 

      Text in Illustration

      *1	Rear view of wire harness connector (to Air Conditioning Amplifier)

      Disconnect the D15 air conditioning amplifier connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition D15-14 (GND) - Body ground Always Below 1 Ω

   3. Reconnect the air conditioning amplifier connector.

   
   

   NG

   REPAIR OR REPLACE HARNESS OR CONNECTOR

   OK

   REPAIR OR REPLACE HARNESS OR CONNECTOR (IG1 NO. 1 RELAY - AIR CONDITIONING AMPLIFIER)