Celica GT L4-1.8L (1ZZ-FE) (2001)
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Heated Glass Control Module: Testing and Inspection
INSPECT DEFOGGER TIMER OPERATION
a. Connect the positive (+) lead from the battery to terminal 1 and negative (-) lead to terminal 3.
b. Connect the positive (+) lead from the battery to terminal 5 through a 3.4 W test bulb.
c. Turn the defogger switch ON and check that the indicator light and test bulb light up for 12 to 18 minutes, then the indicator light and test bulb
lights go out.
If operation is not as specified, replace the switch.
