B3109

DTC B3109

Circuit Description

The low battery detection is handled inside the transmitter. The transmitter sends a battery condition signal to the body control module (BCM) when the transmitter buttons are pressed.

DTC Descriptor

This diagnostic procedure supports the following DTC:

DTC B3109 RFA Key Fob Battery Low






Conditions for Running the DTC

The RFA system must be enabled.

Conditions for Setting the DTC

This code shall be set after 3 consecutive low battery signals from the same programmed transmitter.

Conditions for Clearing the DTC

This code is cleared as current when a normal transmitter voltage signal is received from any programmed transmitter.

Test Description

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

1. This step performs the Diagnostic System Check.
2. This step checks DTC status as current or history in Remote Function Actuation Menu on the scan tool.
3. This step identifies the key fob # , transmitter, with a low battery signal.
4. This step verifies that the battery replacement corrected the fault.