Heated Glass Element Grid Test

THE PRINTED-HEATER LINES CHECK




1. Run engine at 2,000 rpm. Check heater element with battery fully charged.
2. Turn ON rear window defogger switch. Measure heater element voltage with circuit tester at rear window glass center A.
Condition good if indicating about 6 V.




3. If 12 V is indicated at A, there is a break to the negative terminal side.
Move test bar slowly to negative terminal to detect where voltage suddenly changes to 0 V.
4. If 0 V is indicated at A, there is a break to the positive terminal side. Detect where the voltage changes suddenly (12 V) with the same method described.