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DTC B3101Diagnostic Instructions
DTC DescriptorDTC B3101 00: Keyless Entry Data Link CircuitDiagnostic Fault Information
Circuit/System DescriptionThe body control module (BCM) communicates with the remote control door lock receiver through the keyless entry serial data circuits. When any button on the keyless entry transmitter is pressed, the transmitter sends a signal to the remote control door lock receiver. The remote control door lock receiver sends a function request to the BCM, depending on which button is pressed on the transmitter. The BCM receives the message and performs the appropriate function. Conditions for Running the DTCA button is pressed on the keyless entry transmitter. Conditions for Setting the DTCNo response is received from the remote control door lock receiver after the BCM requests information from or sends configuration commands to the remote control door lock receiver. Action Taken When the DTC SetsIn case of power failure the remote control door lock receiver is disabled for 65 seconds, otherwise no action is taken. Conditions for Clearing the DTC
Reference InformationSchematic ReferenceComponent Connector End ViewsDescription and OperationKeyless Entry System Description and Operation Electrical Information ReferenceScan Tool ReferenceControl Module References for scan tool information Circuit/System Testing
If greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the K77 remote control door lock receiver. If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the K9 BCM. If greater than the specified range, test the serial data circuit for a short to voltage. If the circuit tests normal, replace the K9 BCM. If less than the specified range, test the serial data circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the K9 BCM. If greater than the specified range, test the serial data circuit for a short to voltage. If not the specified value, test the serial data circuit for a short to ground. If greater than the specified range, test the serial data circuit for an open/high resistance. Repair InstructionsPerform the Diagnostic Repair Verification after completing the diagnostic procedure. Control Module References for BCM or remote control door lock receiver replacement, programming and setup |
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