Window Defogger Switch On-Vehicle Inspection

Check the illumination area of the switch.

Standard measurement:

Measurement Condition	Specified Condition
Battery positive (+) → 1 (ILL+) Battery negative (-) → 1 (ILL+)	Illuminates

HINT:

The ON/OFF indicator of the switch will not illuminate.

Check the ON/OFF indicator of the switch.

1. Push the switch several times. Check that the ON/OFF indicator illuminates or turns off according to switch operation.
   

   Standard measurement:

   Measurement Condition	Switch Condition	Specified Condition
   Battery positive (+) → 5 (IG) Battery negative (-) → 3 (E)	Defogger switch ON	Illuminates

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

   HINT:

   The illumination area of the switch will not illuminate.

Measure the resistance of the switch.

Standard resistance:

Measurement Condition	Switch Condition	Specified Condition
4 (D) - 3 (E)	ON	Below 1 Ω
4 (D) - 3 (E)	OFF	10 kΩ or higher