Heated Glass Element Switch: Testing and Inspection

A/C control panel assembly:

INSPECT DEFOGGER SWITCH OPERATION




a. Connect the positive (+) lead from the battery to terminal 29 and negative (-) lead to terminal 30.
b. Connect the positive (+) lead from the battery to terminal 36 through a 1.4 W test bulb.




c. Turn the defogger switch ON and check that the test bulb and indicator light turn ON, then turn OFF after approx. 15 minutes.
If operation is not as specified, proceed to inspect the A/C control assembly.







INSPECT DEFOGGER SWITCH CIRCUIT
Disconnect the connector from the switch and inspect the connector on wire harness side.
If the circuit is not as specified, inspect the circuits connected to other parts.