For 1990-2009 cars only
Diagnostic Instructions
| • | Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. |
| • | Review Strategy Based Diagnosis for an overview of the diagnostic approach. |
| • | Diagnostic Procedure Instructions provides an overview of each diagnostic category. |
DTC Descriptor
DTC B3109 : Keyless Entry Transmitter Low BatteryCircuit Description
The LOW battery detection is handled inside the transmitter. The transmitter sends a battery condition signal to the body control module (BCM) when any transmitter button is pressed.
Conditions for Setting the DTC
This code shall be set whenever a low battery signal is received from any 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. |
| • | A scan tool may be used to clear history and current DTC(s). |
Reference Information
Schematic Reference
Electrical Information Reference
Scan Tool Reference
Circuit/System Testing
- Replace the batteries in the transmitter and with the scan tool clear the DTC.
- Operate the transmitter three consecutive times.
- If all circuits test normal, test or replace the transmitter.
| ⇒ | If the DTC sets again, test the battery. |
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
Control Module References for BCM replacement, setup, and programming
