AIR CONDITIONING SYSTEM(for Automatic Air Conditioning System) Cooling Box Magnetic Valve Circuit

DESCRIPTION

The cooler expansion valve (cooler magnetic valve) is controlled by the air conditioning amplifier assembly (for cool box).

WIRING DIAGRAM

PROCEDURE

1. INSPECT FUSE (A/C IG)

   
   

   1. Remove the A/C IG fuse from the cowl side junction block LH.

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

      Standard Resistance
      Tester Connection Condition Specified Condition A/C IG fuse Always Below 1 Ω

   
   

   NG

   REPLACE FUSE

   OK

2. CHECK HARNESS AND CONNECTOR (NO. 1 COOLER WIRING HARNESS - BATTERY)

   
   
   1. 

      *1	Front view of wire harness connector: (to No. 1 Cooler Wiring Harness Sub-assembly)

      Disconnect the No. 1 cooler wiring harness sub-assembly connector.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition 1 (B) - Body ground Engine switch off Below 1 V Engine switch on (IG) 11 to 14 V

   
   

   NG

   REPAIR OR REPLACE HARNESS OR CONNECTOR

   OK

3. CHECK HARNESS AND CONNECTOR (NO. 1 COOLER WIRING HARNESS - BODY GROUND)

   
   
   1. 

      *1	Front view of wire harness connector: (to No. 1 Cooler Wiring Harness Sub-assembly)

      Disconnect the No. 1 cooler wiring harness sub-assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition 6 (L) - Body ground Always Below 1 Ω

   
   

   NG

   REPAIR OR REPLACE HARNESS OR CONNECTOR

   OK

4. CHECK NO. 1 COOLER WIRING HARNESS SUB-ASSEMBLY (OPERATION)

   
   

   1. Replace the No. 1 cooler wiring harness sub-assembly with a normal one and check that the condition returns to normal.

      OK
      Same problem does not occur.

   
   

   OK

   REPLACE NO. 1 COOLER WIRING HARNESS SUB-ASSEMBLY

   NG

5. CHECK COOLER MAGNETIC VALVE (OPERATION)

   
   

   1. Replace the cooler magnetic valve Click here.

      Tech Tips

      Since the cooler magnetic valve cannot be inspected while it is removed from the vehicle, replace the cooler magnetic valve with a normal one and check that the condition returns to normal.

      OK
      Same problem does not occur.

   
   

   OK

   REPLACE COOLER MAGNETIC VALVE Click here

   NG

   REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY (for Cool Box) Click here