The signal was received by the BCM from a remote control door lock transmitter that is programmed to the BCM. The message did not pass the sumcheck security test.

All of the remote control door lock transmitter functions do not operate.

DTC 43 is set when all of the following conditions occur:

DTC 43 is automatically cleared after it is displayed. Any button on the remote control door lock transmitter must be pressed again to display DTC 43 again.

If DTC 43 is set, the remote control door lock transmitter is out of synchronization with the BCM. This can be caused by any of the following:

1. The transmitter buttons were pressed more than 256 times while out of range of the BCM.
2. The transmitter buttons were pressed more than 10 time while out of the range of the BCM immediately after the transmitter battery has been replaced.
3. The transmitter signal encountered noise from the surrounding environment.
4. The transmitter is defective.

The numbers below refer to the step numbers on the diagnostic table.

1. This step tests the BCM to see if DTC 43 is displayed by the BCM.

2. This step tests the remote control door lock transmitter.