Lexus IS250 · Service Manual BODY

INSPECTION

Inspection


INSPECT WINDSHIELD DEICER SWITCH

  1. E105444E01
    Disconnect the windshield deicer switch connector.

  1. Measure the voltage and resistance according to the value(s) in the table below.

    Voltage:
    Tester Connection
    Condition
    Specified Condition
    1 (ILL+) - 2 (ILL-)
    Headlight dimmer switch OFF → ON
    Below 1 V → 10 to 14 V
    4 (D) - 3(E)
    Engine switch on (IG)
    10 to 14 V
    5 (IG) - 3(E)
    Engine switch on (IG)
    10 to 14 V

    Resistance:
    Tester Connection
    Condition
    Specified Condition
    2 (ILL-) - Body ground
    Always
    Below 1Ω
    3(E) - Body ground
    Always
    Below 1Ω

  1. E105443E01
    Reconnect the windshield deicer connector.

  1. Measure the voltage and resistance according to the value(s) in the table below.

    Voltage:
    Tester Connection
    Condition
    Specified Condition
    4 (D) - 3(E)
    Engine switch on (IG), windshield deicer switch OFF → ON
    Below 1 V → 10 to 14 V (after 15 +- 3 minutes: Below 1 V)
    5 (IG) - 3(E)
    Engine switch on (IG), windshield deicer switch ON
    10 to 14 V → Below 1 V

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