2010 Cadillac Truck SRX FWD V6-3.0L Page 558

2010 Cadillac Truck SRX FWD V6-3.0L 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.