B3109

DTC B3109

DTC Descriptor

DTC B3109
- Keyless Entry Transmitter 1 Low Battery

Diagnostic Fault Information

Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. Initial Inspection and Diagnostic Overview

Circuit/System Description

With each press of a keyless entry transmitter button, a message containing the current battery state of the transmitter is sent to the body control module (BCM) along with the commanded keyless entry function.

Conditions for Running the DTC

The keyless entry system must be enabled.

Conditions for Setting the DTC

The DTC sets after 3 consecutive low battery signals from the same programmed transmitter.

Action Taken When the DTC Sets

The keyless entry system is inoperative.

Conditions for Clearing the DTC

The DTC is cleared when a normal transmitter voltage signal is received from any programmed transmitter.

Circuit/System Verification

Verify DTC B 3109 is not set:

If the DTC is set, replace the battery in the applicable keyless entry transmitter. Operate the applicable transmitter 3 consecutive times. If any DTCs reset, replace the applicable keyless entry transmitter.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

* Transmitter Battery Replacement
* Transmitter Programming Verification Tests