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Home >> GMC >> 2007 >> Acadia SLE, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 317 (Keyless Entry System And Remote Functions) >> Diagnostic Information and Procedures >> DTC B3121 >> DTC Descriptor >> Conditions for Setting the DTC

Conditions for Setting the DTC

WARNING: This page is about a different car, the 2007 Cadillac STS. However, it is still accessible from the selected car via links, so may be relevant.

The remote control door lock receiver (RCDLR) will set this DTC during antenna authentication if the keyless entry antenna - rear compartment is open, shorted to battery, or shorted to ground. The RCDLR can only set a DTC when it is the vehicle system voltage is between 9-16 volts.

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