Heated Glass Element Relay: Testing and Inspection

Defogger Timer:

1. Remove the knee protector.
2. Remove the defogger timer from indoor relay box.
3. Connect the battery and the test-light to the timer as shown in the figure.
4. Check to be sure that the test light illuminates for approximately eleven seconds when battery voltage is applied to terminal 3 for a few seconds.
5. Check to be. sure that the test light switches OFF when battery voltage is again applied, during the test described above, to terminal 3.

Defogger Relay:

1. Remove defogger relay from junction block.
2. Connect battery power source to terminal 2. Check circuit between terminals with terminal 4 grounded.