Test A: Rear Window Does Not Defog

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2003 Dodge Intrepid, 2003 Chrysler Intrepid, 2003 Chrysler Concorde, 2003 Chrysler 300M, and 2002 Dodge Intrepid. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Indicator light illumination does not confirm system operation. It only indicates that power is available at relay output.

Start engine. Press defogger on. Indicator light should illuminate. If indicator light does not illuminate on vehicles with Automatic Temperature Control (ATC), see ATC TEST 1A: REAR WINDOW DEFOGGER MALFUNCTION under DIAGNOSTIC TESTS. If indicator light does not illuminate on vehicles with Manual Temperature Control (MTC), see MTC TEST 1A: REAR WINDOW DEFOGGER MALFUNCTION under DIAGNOSTIC TESTS. If indicator light illuminates, go to next step.
Using a voltmeter, connect negative lead to ground. Touch positive lead to point "A" (driver's side). See Figure . If no voltage is present, go to FUSE & ELECTRICAL SHORT TEST under COMPONENT TESTS. If voltage is more than 11 volts, press rear window defogger off. Voltage should be zero volts. If voltage is as specified, go to GRID FILAMENT TEST under COMPONENT TESTS.