Heated Glass Element Grid Test
PRINTED-HEATER LINE CHECK1. Run engine at 2000 r/min. Check heater element with battery at full.
2. Turn "ON" rear window defogger switch. Measure heater element voltage with circuit tester at rear window glass center A.
Condition is good if it indicates approximately 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) in the same method described above.