Heated Glass Element: Testing and Inspection

Function Test

NOTE:
- Be careful not to scratch or damage the defogger wires with the tester probe.
- Before testing, check the No. 11 (40 A) fuse in the under-hood fuse/relay box and the No. 14 (10 A) fuse in the under-dash fuse/relay box.




1. Check for voltage between the positive terminal (A) and body ground with the ignition switch and defogger switch ON. There should be battery voltage.
- If there is no voltage, check for:
- Faulty defogger relay.
- Faulty window antenna coil ('02-04 models).
- An open in the BLK/RED, BLK/YES, or YES/BLK wire.
- Faulty climate control unit.
- If there is battery voltage, go to step 2.

2. Check for voltage between the positive terminal (A) and the negative terminal (B). If there is no voltage, check for:
- An open in the BLK/BLU wire.
- Faulty window antenna coil.
- Poor body ground at the window antenna coil mounting bolt.

3. Touch the voltmeter positive probe to the halfway point of each defogger wire, and the negative probe to the negative terminal. There should be about 6 V with the ignition switch and the defogger switch ON.
- If the voltage is as specified, the defogger wire is OK.
- If the voltage is not as specified, repair the defogger wire.
- If it is more than 6 V, there is a break in the negative half of the wire.
- If it is less than 6 V, there is a break in the positive half of the wire.