AIR CONDITIONING SYSTEM Cooling Box Blower Motor Circuit

DESCRIPTION

The cooler blower motor is operated by signals from the air conditioning amplifier assembly (for cool box).

WIRING DIAGRAM

A01ENR3E03

INSPECTION PROCEDURE

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. A01ENNIE12

      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. A01ENNIE11

      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.

    NG

    INSPECT COOLER BLOWER MOTOR Click here

    OK

    REPLACE NO. 1 COOLER WIRING HARNESS SUB-ASSEMBLY

  5. INSPECT COOLER BLOWER MOTOR


    1. A01ER17E01

      Remove the cooler blower motor Click here.

    2. Connect the positive (+) lead from the battery to terminal 2 and negative (-) lead to terminal 1, then check that the motor operates smoothly.

      OK
      Cooler blower motor operates smoothly.

    NG

    REPLACE COOLER BLOWER MOTOR Click here

    OK

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