Diagnosis And Testing - Window Defogger
WARNING: This page is about a different car, the 2004 Dodge Intrepid, 2004 Chrysler Intrepid, 2004 Chrysler Concorde, and 2004 Chrysler 300M. However, it is still accessible from the selected car via links, so may be relevant.
Electrically Heated Rear Window Defogger operation can be easily checked in three steps:
- Use ATC or MTC self diagnostics, or the DRB III(R) scan tool to check fault codes and control button operation. (Refer to DIAGNOSIS AND TESTING - SELF DIAGNOSTICS ) Note, this does not check the EBL system. There are no fault codes that can check for the EBL grid, relay, or wiring. Refer to steps 2 and 3 for system tests.
- Perform a system test with a voltmeter. (Refer to DIAGNOSIS AND TESTING - SYSTEM TEST )
- Check the voltages at the rear grid relay. (Refer to DIAGNOSIS AND TESTING - REAR WINDOW DEFOGGER RELAY )