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).

INSPECTION PROCEDURE

PROCEDURE

1. Click here

   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

   
   
   • OKClick here
   • NGClick here
2. Click here

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

   
   
   1. 

      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

   
   
   • OKClick here
   • NGClick here
3. Click here

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

   
   
   1. 

      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

   
   
   • OKClick here
   • NGClick here
4. Click here

   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.

   
   
   • OKClick here
   • NGClick here
5. Click here

   CHECK COOLER MAGNETIC VALVE (OPERATION)

   
   

   1. Replace the cooler magnetic valve (Click here).

      Tip:

      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.

   
   
   • OKClick here
   • NGClick here
6. Click here

   REPLACE FUSE

7. Click here

   REPAIR OR REPLACE HARNESS OR CONNECTOR

8. Click here

   REPLACE NO. 1 COOLER WIRING HARNESS SUB-ASSEMBLY

9. Click here

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

10. Click here

    REPLACE COOLER MAGNETIC VALVEClick here