WINDSHIELD DEICER SYSTEM Windshield Deicer does not Operate

DESCRIPTION

When the front wiper deicer switch is turned on, the front wiper deicer switch operation information is sent to the air conditioning amplifier assembly. When the air conditioning amplifier assembly receives the front wiper deicer switch operation information, it turns the front wiper deicer relay (DEICER) on and operates the windshield deicer system.

WIRING DIAGRAM

B001HSKE03

CAUTION / NOTICE / HINT

Note


  • Inspect the fuses for circuits related to this system before performing the following procedure.

  • Troubleshoot the windshield deicer system after confirming that the air conditioning system is functioning properly.

    Click here

PROCEDURE


  1. PERFORM ACTIVE TEST USING GTS (DEICER RELAY (FRONT))


    1. Using the GTS, perform the Active Test.

      Click here

      Air Conditioner
      Tester Display Measurement Item Control Range Diagnostic Note
      Deicer Relay (Front) Windshield glass (windshield deicer wire) OFF or ON -
      OK
      The windshield deicer system operates normally.
      Result
      Proceed to
      OK
      NG

    NG

    CHECK HARNESS AND CONNECTOR (WINDSHIELD GLASS [WINDSHIELD DEICER WIRE] - BATTERY) Click here

    OK

  2. INSPECT FRONT WIPER DEICER SWITCH


    1. Remove the front wiper deicer switch.

      Click here

    2. Inspect the front wiper deicer switch.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE FRONT WIPER DEICER SWITCH Click here

    OK

  3. CHECK HARNESS AND CONNECTOR (FRONT WIPER DEICER SWITCH - AIR CONDITIONING AMPLIFIER ASSEMBLY)


    1. Disconnect the G219 front wiper deicer switch connector.

    2. Disconnect the G24 air conditioning amplifier assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      G219-2 (E) - G24-5 (SW 1) Always Below 1 Ω
      G219-4 (D) - G24-11 (FDFI) Always Below 1 Ω
      G219-2 (E) or G24-5 (SW 1) - Body ground Always 10 kΩ or higher
      G219-4 (D) or G24-11 (FDFI) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  4. CHECK HARNESS AND CONNECTOR (WINDSHIELD GLASS [WINDSHIELD DEICER WIRE] - BATTERY)


    1. B001CR0C05
      *a

      Front view of wire harness connector

      (to Windshield Glass [Windshield Deicer Wire])

      Disconnect the windshield glass (windshield deicer wire) connector.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      A101-2 (B) - Body ground Ignition switch ON, front wiper deicer switch off Below 1 V
      Ignition switch ON, front wiper deicer switch on 11 to 14 V
      A101-3 (B2) - Body ground Ignition switch ON, front wiper deicer switch off Below 1 V
      Ignition switch ON, front wiper deicer switch on 11 to 14 V
      Result
      Proceed to
      OK
      NG

    NG

    INSPECT FRONT WIPER DEICER RELAY (DEICER) Click here

    OK

  5. CHECK HARNESS AND CONNECTOR (WINDSHIELD GLASS [WINDSHIELD DEICER WIRE] - BODY GROUND)


    1. B001CR0C06
      *a

      Front view of wire harness connector

      (to Windshield Glass [Windshield Deicer Wire])

      Disconnect the windshield glass (windshield deicer wire) connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A101-1 (E) - Body ground Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE WINDSHIELD GLASS (WINDSHIELD DEICER WIRE) Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  6. INSPECT FRONT WIPER DEICER RELAY (DEICER)


    1. Remove the front wiper deicer relay (DEICER) from the No. 5 engine room relay block.

    2. Inspect the front wiper deicer relay (DEICER).

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE FRONT WIPER DEICER RELAY (DEICER)

    OK

  7. CHECK HARNESS AND CONNECTOR (FRONT WIPER DEICER RELAY [DEICER] - BATTERY)


    1. B001FH8C02
      *a

      Front view of wire harness connector

      (to Front Wiper Deicer Relay [DEICER])

      Remove the front wiper deicer relay (DEICER) from the No. 5 engine room relay block.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      Front wiper deicer relay (DEICER) terminal 3 - Body ground Always 11 to 14 V
      Front wiper deicer relay (DEICER) terminal 2 - Body ground Ignition switch ON 11 to 14 V
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  8. CHECK HARNESS AND CONNECTOR (FRONT WIPER DEICER RELAY [DEICER] - AIR CONDITIONING AMPLIFIER ASSEMBLY AND WINDSHIELD GLASS [WINDSHIELD DEICER WIRE])


    1. Remove the front wiper deicer relay (DEICER) from the No. 5 engine room relay block.

    2. Disconnect the A101 windshield glass (windshield deicer wire) connector.

    3. Disconnect the G25 air conditioning amplifier assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      Front wiper deicer relay (DEICER) terminal 5 - A101-2 (B) Always Below 1 Ω
      Front wiper deicer relay (DEICER) terminal 5 - A101-3 (B2) Always Below 1 Ω
      Front wiper deicer relay (DEICER) terminal 1 - G25-40 (FDEF) Always Below 1 Ω
      Front wiper deicer relay (DEICER) terminal 5 or A101-2 (B) - Body ground Always 10 kΩ or higher
      Front wiper deicer relay (DEICER) terminal 5 or A101-3 (B2) - Body ground Always 10 kΩ or higher
      Front wiper deicer relay (DEICER) terminal 1 or G25-40 (FDEF) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR