2010 Cadillac CTS Sedan AWD V6-3.6L Page 556
Repair Instructions
Important: This vehicle may be equipped with the Advance 2 Way Remote Start System. Vehicle equipped with the Advance 2 Way
Remote Start System can be identified by an LCD screen on the keyless entry transmitter or a yellow label on the RCDLR. When servicing
the Advance 2 Way Remote Start System, ensure that the correct parts are installed during replacement. Service parts for the Advance 2
Way Remote Start System can be found in the Accessory section of the parts manual.
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
Remote Control Door Lock Transmitter Programming (without Y41) (See: Accessories and Optional Equipment/Antitheft and Alarm
Systems/Keyless Entry/Keyless Entry Transmitter/Testing and Inspection/Remote Control Door Lock Transmitter Programming (without Y41))
B3110
DTC B3109, B3110, B3111, or B3112
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/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
Circuit/System Description
Without RPO Y41
With each press of a keyless entry transmitter button, a message containing the current battery state of the transmitter is sent to the remote control
door lock receiver (RCDLR) along with the commanded keyless entry function.
With RPO Y41
When starting the vehicle, a message containing the current battery state of the transmitter is sent to the remote control door lock receiver
(RCDLR).
Conditions for Running the DTC
Without RPO Y41
A keyless transmitter button is pressed.
With RPO Y41
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.
