On-Vehicle Service

PRINTED-HEATER LINES CHECK




1. Run the engine at 2,000 r/min. Check the heater element with the battery at full.
2. Turn "ON " the rear window defogger switch. Measure the heater element voltage with an ohmmeter at the rear window glass center A. Condition is good if it indicates about 6 V.




3. If 12 V is indicated at A, there is a break in the negative terminals from A. Move the test probe slowly to the negative terminal to detect where voltage changes suddenly (0V).
4. If 0 V is indicated at A, there is a break in the positive terminals from A. Defect where the voltage changes suddenly (12 V) in the same method described above.