Symptom Related Diagnostic Procedures

Rear Window Defogger Inoperative

Test Description

Step 1 - Step 11:

Step 12 - Step 23:

The numbers below refer to the step numbers on the diagnostic table.
6. If the Rear Defog Load Shed data parameters are displayed as Active, system voltage may be low due to a number of loads enabled on the vehicle, while the ignition is ON. This may be normal due to the number of loads enabled or the vehicle may have a charging system or battery concern.
7. Gain access to the REAR DEFOG relay located in the right rear fuse block and listen for an audible click when the relay operates. Command both the ON and OFF states of the REAR DEFOG relay. Repeat the commands as necessary.