Heated Glass Element Switch: Testing and Inspection
INSPECTION1. INSPECT CENTER CLUSTER MODULE SWITCH
a. Check operation of the defogger timer.
1. Connect the positive (+) lead from the battery to terminal 3 and the negative (-) lead to terminal 4.
2. Connect the positive (+) lead from the battery to terminal 4 through a 1.4 W test bulb.
3. Push the rear window defogger switch ON, check that the switch and the test bulb illuminates for 12 to 18 minutes, and then they go off.
If the result is not as specified, replace the module switch.