2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 558
Circuit/System Testing
1. Verify the Bluetooth (R) antenna is properly connected to the K73 telematics communication interface control module and is not damaged.
瀚慖f the antenna is disconnected or damaged, repair or replace as necessary.
2. Ignition ON, verify the DTC B2485 is not set.
瀚慖f the DTC is set, replace the Bluetooth (R) antenna. Clear the DTC and cycle the ignition OFF then back ON. If the DTC resets as
current, replace the K73 telematics communication interface control module.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Wireless Communication Interface Antenna Replacement (See: Accessories and Optional Equipment/Antenna/Service and Repair/Wireless
Communication Interface Antenna Replacement)
* Control Module References (See: Testing and Inspection/Programming and Relearning) for telematics communication interface control
module replacement, setup, and programming
Vehicle Access
DTC B2494 (Manual Liftgate)
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 Descriptor
DTC B2494 00
- Liftgate Handle Switch Circuit
Diagnostic Fault Information
Circuit/System Description
The liftgate release switch is an input to the body control module (BCM). The BCM supplies battery voltage to the signal circuit and when the
release switch is activated the signal circuit voltage goes low. The BCM controls the liftgate release actuator through the liftgate latch release relay.
When the release switch signal is activated, the BCM enables the liftgate latch release relay by applying battery voltage to the liftgate latch release
relay supply circuit and the relay is energized when the BCM grounds the liftgate latch release relay control circuit. When the relay is energized
battery voltage is supplied to the liftgate release actuator through the liftgate release actuator control circuit.
Conditions for Running the DTC
The system voltage is 9-18 V.
Conditions for Setting the DTC
The liftgate release switch signal circuit is active for longer than 10 minutes.
Action Taken When the DTC Sets
The liftgate latch will malfunction.
Conditions for Clearing the DTC
* The DTC will be current for as long as the fault is present.
