B3112

DTC B3109-B3113

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (Diagnostic System Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (Strategy Based Diagnosis) for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions (Diagnostic Procedure Instructions) provides an overview of each diagnostic category.

DTC Descriptors
DTC B3109 00
- Keyless Entry Transmitter 1 Low Battery

DTC B3110 00
- Keyless Entry Transmitter 2 Low Battery

DTC B3111 00
- Keyless Entry Transmitter 3 Low Battery

DTC B3112 00
- Keyless Entry Transmitter 4 Low Battery

DTC B3113 00
- Keyless Entry Transmitter 5 Low Battery

Circuit/System Description

With RPO ATG

With each press of a keyless entry transmitter button, a message containing the current battery state of the transmitter is sent to the remote function receiver module, along with the commanded keyless entry function. The remote function receiver module sends this to the body control module (BCM) to determine what action to perform.

With RPO ATS

When starting the vehicle, a message containing the current battery state of the transmitter is sent to the keyless entry control module, which then sends the message to the BCM.

Conditions for Running the DTC

With RPO ATG

A keyless transmitter button is pressed.

With RPO ATS

Ignition ON.

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 the programmed transmitter that set the DTC.

Reference Information
Schematic Reference

Remote Function Schematics (Electrical Diagrams)
Connector End View Reference

Component Connector End Views (Connector Views)
Description and Operation

Keyless Entry System Description and Operation (without ATH) (Keyless Entry System Description and Operation (Without ATH))Keyless Entry System Description and Operation (with ATH) (Keyless Entry System Description and Operation (With ATH))
Electrical Information Reference

* Circuit Testing (Circuit Testing)
* Connector Repairs (Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (Testing For Intermittent Conditions and Poor Connections)
* Wiring Repairs (Wiring Repairs)

Scan Tool Reference

Control Module References (Programming and Relearning) for scan tool information

Circuit/System Verification

Verify none of the following DTCs are set:

* DTC B3109
* DTC B3110
* DTC B3111
* DTC B3112
* DTC B3113

If any of the DTCs are set, replace the battery in the appropriate keyless entry transmitter. Operate the transmitter 3 consecutive times. If the DTC resets, replace the keyless entry transmitter.

Repair Instructions

Perform the Diagnostic Repair Verification (Verification Tests) after completing the diagnostic procedure.

* Remote Control Door Lock Transmitter Programming (with or without ATH) (Testing and Inspection)
* Control Module References (Programming and Relearning) for remote function receiver module replacement, setup, and programming