B3122

DTC B3122

Circuit Description
The Keyless Entry Antenna-Back Up Is located in the glove compartment area and is used as a short range Low Frequency (LF) transmitter. When a valid Key Fob is within the passenger compartment and the brake pedal is depressed and the ignition button is pressed the Keyless Entry Antenna transmitter broadcasts a challenge within the passenger compartment to the Key Fob. If the response from the Key Fob via radio frequency (RF) is a valid response and all the security requirement are met the vehicles engine will start or be able to go into accessory mode.

Conditions for Setting the DTC
The Remote Control Door Lock Receiver (RCDLR) will set this DTC during antenna activation if the Keyless Entry Antenna-Back Up 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.

Action Taken When the DTC Sets
The Remote Control Door Lock Receiver (RCDLR) will set and store a DTC B3122.

Conditions for Clearing the DTC
^ The Remote Control Door Lock Receiver (RCDLR) no longer detects a open, short to power or short to ground on the antenna circuit.
^ The use of a scan tool.

Test Description
The numbers below refer to the step numbers on the diagnostic table.
2. Verifies that DTC B3122 is a current DTC.
3. Testing for power and ground to the Keyless Entry Antenna.