Conditions for Setting the DTC
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B0283 02
The HVAC control module detects a short to ground in the rear defog relay control circuit for greater than 1 second.
B0283 05
The HVAC control module detects a short to voltage or an open/high resistance in the rear defog relay control circuit or the rear defog relay ground circuit for greater than 1 second.
B0283 06
The HVAC control module detects a short to ground or open/high resistance in the rear defog relay control circuit for 1 second or greater.