Keyless Entry Data Link Circuit Range/Performance
Table of contents
B3101 CADILLAC Possible Causes
- Faulty Remote Control Door Lock Receiver (RCDLR)
- Remote Control Door Lock Receiver (RCDLR) harness is open or shorted
- Remote Control Door Lock Receiver (RCDLR) circuit poor electrical connection
- Faulty Body Control Module (BCM)
How do I fix code B3101 CADILLAC?
Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins.
Cost of diagnosing the B3101 CADILLAC code
The cost of diagnosing the B3101 CADILLAC code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
B3101 CADILLAC Description
The Remote Control Door Lock Receiver (RCDLR) communicates with the Body Control Module (BCM) through the keyless entry serial data circuit. When any button on the keyless entry transmitter is pressed, the transmitter sends a signal to the RCDLR. The RCDLR sends a lock, unlock, or panic alarm request to the BCM, depending on which button is pressed on the transmitter. The BCM receives the message and performs the appropriate function. The BCM also uses the keyless entry serial data circuit in order to communicate with the RCDLR when programming transmitters. The Diagnostic Trouble Code (DTC) sets when the BCM does not receive an acknowledgment message from the RCDLR within 300 milliseconds of a second Programming Mode/Diagnostic Mode request.