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Home >> Cadillac >> 2009 >> Escalade EXT >> Repair and Diagnosis >> External Pages >> Different car >> Section 8 (Cellular System, Entertainment System, And Navigation System) >> Diagnostic Information and Procedures >> Radio Controls Inoperative - Rear Seat >> Circuit/System Testing
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Circuit/System Testing

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  1. Test or repair open, short to ground or short to voltage on the RSA ground circuit and battery positive voltage circuit.
    • If all circuits test normal, replace the rear HVAC control module.
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