WINDSHIELD DEICER SYSTEM Windshield Deicer does not Operate

DESCRIPTION

When the windshield deicer switch is operated, the operation signal is transmitted to the radio receiver assembly. The radio receiver assembly transmits the operation signal to the air conditioning amplifier assembly via the CAN communication line.

WIRING DIAGRAM

B002JUDE05

CAUTION / NOTICE / HINT

Note


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

  • If the auxiliary battery voltage is low, the windshield deicer system may not operate. Refer to Data List for the power steering system.

    for Power Tilt and Power Telescopic Steering Column: Click here

    for Manual Tilt and Power Telescopic Steering Column: Click here

  • Troubleshoot the windshield deicer system after confirming that the nvigation system (w/ Navigation System) or audio and visual system (w/ Audio and Visual System) is functioning properly.

    w/ Navigation System: Click here

    w/ Audio and Visual System (for 8 Inch Display): Click here

    w/ Audio and Visual System (for 10.3 Inch Display): Click here

PROCEDURE


  1. PERFORM ACTIVE TEST USING GTS


    1. Using the GTS, perform the Active Test.

      Click here


      Body Electrical > Air Conditioner > Active Test
      Tester Display Measurement Item Control Range Diagnostic Note
      Deicer Relay (Front) Windshield glass (windshield deicer wire) OFF or ON -

      Body Electrical > Air Conditioner > Active Test
      Tester Display
      Deicer Relay (Front)
      OK
      The windshield deicer system operates normally.
      Result
      Proceed to
      OK
      NG

    NG

    CHECK HARNESS AND CONNECTOR (WINDSHIELD GLASS - BATTERY) Click here

    OK

  2. CHECK AIR CONDITIONING AMPLIFIER ASSEMBLY


    1. Replace the air conditioning amplifier assembly with a new or normally functioning one.

      Click here

    2. Check that the window deicer system operates normally.

      OK
      The window deicer system operates normally.
      Result
      Proceed to
      OK
      NG

    OK

    END (AIR CONDITIONING AMPLIFIER ASSEMBLY IS DEFECTIVE)

    NG

  3. CHECK MULTI-DISPLAY ASSEMBLY


    1. Replace the multi-display assembly with a new or normally functioning one.

      Click here

    2. Check that the window deicer system operates normally.

      OK
      The window deicer system operates normally.
      Result
      Proceed to
      OK
      NG

    OK

    END (MULTI-DISPLAY ASSEMBLY IS DEFECTIVE)

    NG

    REPLACE RADIO RECEIVER ASSEMBLY Click here

  4. CHECK HARNESS AND CONNECTOR (WINDSHIELD GLASS - BATTERY)


    1. B002KKHC03
      *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
      A5-2 (B) - Body ground Power switch on (IG), windshield deicer switch on 11 to 14 V
      A5-1 (B2) - Body ground
      Result
      Proceed to
      OK
      NG

    NG

    INSPECT FRONT WIPER DEICER RELAY Click here

    OK

  5. CHECK HARNESS AND CONNECTOR (WINDSHIELD GLASS - BODY GROUND)


    1. B002KKHC04
      *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
      A5-3 (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


    1. Remove the front wiper deicer relay from the No. 2 engine room relay block.

    2. Inspect the front wiper deicer relay.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE FRONT WIPER DEICER RELAY

    OK

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


    1. B002IUEC04
      *a

      Front view of wire harness connector

      (to Front Wiper Deicer Relay)

      Remove the front wiper deicer relay from the No. 2 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 terminal 5 - Body ground Power switch off 11 to 14 V
      Front wiper deicer relay terminal 1 - Body ground Power switch on (IG) 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 - AIR CONDITIONING AMPLIFIER ASSEMBLY AND WINDSHIELD GLASS)


    1. Disconnect the A5 windshield glass (windshield deicer wire) connector.

    2. Disconnect the I50 air conditioning amplifier assembly connector.

    3. Remove the front wiper deicer relay from the No. 2 engine room relay block.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      Front wiper deicer relay terminal 3 - A5-2 (B) Always Below 1 Ω
      Front wiper deicer relay terminal 3 - A5-1 (B2) Always Below 1 Ω
      Front wiper deicer relay terminal 2 - I50-39 (FDEF) Always Below 1 Ω
      Front wiper deicer relay terminal 3 or A5-2 (B) - Body ground Always 10 kΩ or higher
      Front wiper deicer relay terminal 3 or A5-1 (B2) - Body ground Always 10 kΩ or higher
      Front wiper deicer relay terminal 2 or I50-39 (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