2010 Cadillac Truck SRX FWD V6-3.0L Page 631

2010 Cadillac Truck SRX FWD V6-3.0L 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.