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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.

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