Rear Window Defogger Function TestNOTE:
- Be careful not to scratch or damage the defogger wires with the tester probe.
- Before testing, check the No. 8 (30 A) fuse in the under-hood fuse/relay box and the No. 36 (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 the defogger switch ON.|
There should be battery voltage.
|2.||Disconnect the negative terminal (B) from the rear window defogger.|
|3.||Check for continuity between the negative terminal (B) and body ground.|
If there is no continuity, check for an open in the wire or poor ground (G801). If there is continuity, go to 4.
|4.||Reconnect the negative terminal to the rear window defogger.|
|5.||Turn the ignition switch ON (II) and the rear window defogger switch ON.|
|6.||Touch the voltmeter positive probe to each point on each defogger wire, and the negative probe to the negative terminal.|