2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 631
5. Install a DMM between the signal circuit terminal 1 and the low reference circuit terminal 2. Set the DMM to capture DC voltage using the
MIN MAX function.
6. Activate the antenna by pressing the rear closure touch pad. Verify the MAX voltage captured by the DMM is greater than.5 V.
瀚慖f less than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the K84
keyless entry control module.
7. If all circuits test normal, replace the T10K center console rear keyless entry antenna. Verify DTC B3123 is not set.
瀚慖f the DTC is set, replace the K84 keyless entry control module.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Ignition Lock Key Transmitter Antenna Replacement - Floor Console (See: Accessories and Optional Equipment/Antitheft and Alarm
Systems/Keyless Entry/Antenna - Keyless Entry/Service and Repair/Ignition Lock Key Transmitter Antenna Replacement - Floor Console)
* Control Module References (See: Testing and Inspection/Programming and Relearning)for keyless entry control module replacement, setup,
and programming
B3124
DTC B3124
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 B3124 02
- Keyless Entry Antenna 6 Short to Ground
DTC B3124 05
- Keyless Entry Antenna 6 High Voltage/Open
Diagnostic Fault Information
Circuit/System Description
The rear compartment antenna is located on the rear compartment floor near the seat back, centered, and is used to establish low frequency
communications with the keyless entry transmitter. When the driver attempts to change the ignition status of the vehicle, the keyless entry control
module communicates with the rear compartment antenna.
Conditions for Running the DTC
* The touch pad in the driver door or passenger door handle is touched within 15 minutes of any door ajar status changing.
* Any exterior door handle or handles is pulled.
* The last door becomes closed.
* Pressing the start/stop switch.
Conditions for Setting the DTC
B3124 02
The keyless entry control module detects a short to ground on the rear compartment keyless entry antenna signal circuit.
