Schematic Reference: Defogger Schematics

Connector End View Reference: Stationary Windows Connector End Views

Did you review the Rear Window Defogger system operation and perform the necessary inspections?

Go to Step 2

Go to Symptoms - Stationary Windows

1. Turn ON the ignition, with the engine OFF.
2. Observe the rear window defogger indicator on the HVAC Control Assembly.
3. Command the rear window defogger indicator ON and OFF, by depressing the rear window defogger switch on the HVAC Control Assembly.

Does the indicator remain illuminated?

Go to Step 3

Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems

Test the supply voltage circuit of the Rear Window Defogger relay coil for short to voltage. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 6

Go to Step 4

Inspect for a poor connection at the harness connector of the HVAC Control Assembly. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 6

Go to Step 5

Replace the HVAC Control Assembly. Refer to Heater and Air Conditioning Control Replacement in HVAC Systems - Manual.

Did you complete the replacement?

Go to Step 6

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Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 2