2010 Cadillac CTS Sedan AWD V6-3.6L Page 559

2010 Cadillac CTS Sedan AWD V6-3.6L Page 559

Control Module References (See: Testing and Inspection/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

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

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))

B3112

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