Lexus IS250 IS220d GSE20 ALE20 - WINDSHIELD / WINDOWGLASS

WINDSHIELD DEICER SWITCH - INSPECTION

1. INSPECT WINDSHIELD DEICER SWITCH
Windshield Deicer Switch - Inspection. WINDSHIELD / WINDOWGLASS. Lexus IS250 IS220d GSE20 ALE20

Disconnect the windshield deicer switch connector.

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

  • Voltage:
  • Tester ConnectionConditionSpecified Condition
    1 (ILL+) - 2 (ILL-)Headlight dimmer switch OFF → ONBelow 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 ConnectionConditionSpecified Condition
    2 (ILL-) - Body groundAlwaysBelow 1Ω
    3(E) - Body groundAlwaysBelow 1Ω
Windshield Deicer Switch - Inspection. WINDSHIELD / WINDOWGLASS. Lexus IS250 IS220d GSE20 ALE20

Reconnect the windshield deicer connector.

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

  • Voltage:
  • Tester ConnectionConditionSpecified Condition
    4 (D) - 3(E)Engine switch on (IG), windshield deicer switch OFF → ONBelow 1 V → 10 to 14 V (after 15 +- 3 minutes: Below 1 V)
    5 (IG) - 3(E)Engine switch on (IG), windshield deicer switch ON10 to 14 V → Below 1 V