2005 Toyota Matrix Base, 4WDFACTORY OEM SERVICE PROCEDURE

Window Defogger System: Inspection

  1. INSPECT REAR WINDOW DEFOGGER SWITCH ASSYΒ 
    1. Inspect the defogger switch.
      1. Connect the battery's positive (+) lead to terminal 2 and negative (-) lead to terminal 3. Check that the indicator lamp turns on.
        2. Fig 1: Connecting Battery's Positive (+) Lead To Terminal 2 And Negative (-) Lead To Terminal 3 (Checking Indicator Lamp Turns On)
        G02635655Courtesy of Β© TOYOTA, LICENSE AGREEMENT TMS1002

      If the result is not as specified, replace the switch or bulb.

    2. Inspect the defogger timer operation.
      1. Connect the battery's positive (+) lead to terminal 2 and negative (-) lead to terminal 3.
        2. Fig 2: Connecting Battery's Positive (+) Lead To Terminal 2 And Negative (-) Lead To Terminal 3
        G02635656Courtesy of Β© TOYOTA, LICENSE AGREEMENT TMS1002
      2. Connect the battery's positive (+) lead to terminal 6 through a 1.4 W test bulb.
      3. Turn the defogger switch ON. Check that:
        • The indicator lamp in the switch and test bulb turn on.
        • After approximately 12 to 18 minutes, the indicator lamp and test bulb turn off.

      If the result is not as specified, replace the switch.

  2. INSPECT DEFOGGER RELAY (Marking: DEFOG)Β 
    1. Remove the DEFOG relay from the instrument panel J/B.
    2. Measure the resistance of the relay.
      TERMINAL NO SPECIFIED CONDITION

      Terminal No. Specified Condition
      3-5 10kΞ© or higher
      3-5 Below 1 Ξ© (when battery voltage is applied to terminal 1 and 2)

      If the result is not as specified, replace the relay.

      Fig 3: Measuring Resistance Of Relay
      G02635657Courtesy of Β© TOYOTA, LICENSE AGREEMENT TMS1002
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