Component Tests and General Diagnostics

PERFORM THESE TEST FIRST

1. Check Rear WDO Defogger Grid for opens.

2. Check G400 by noting normal operation of the RH stoplamps.

3. Check for a broken (or partially broken) wire inside of the insulation which could cause system failure but prove "GOOD" in a continuity/voltage check.

4. Check for proper installation of aftermarket electronic equipment which may affect the integrity of other systems.