2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 560
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic repair.
* Liftgate Release Switch Replacement (See: Body and Frame/Doors, Hood and Trunk/Trunk / Liftgate/Trunk / Liftgate Switch/Service and
Repair/Liftgate Release Switch Replacement)
* Control Module References (See: Testing and Inspection/Programming and Relearning)for BCM replacement, setup and programming
Liftgate Handle Switch Malfunction
Liftgate Handle Switch Malfunction - DTC B2494
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 02
- Liftgate Handle Switch Circuit Short to Ground
Diagnostic Fault Information
Circuit/System Description
The power liftgate handle switch circuit provides a single input to the liftgate control module. The liftgate handle switch is supplied a signal
voltage, when the switch contact closes and the voltage drops, the liftgate control module detects the voltage drop and commands the liftgate to
release.
Conditions for Running the DTC
The system voltage is 9-16 V.
Conditions for Setting the DTC
The liftgate handle switch signal circuit is active for greater than 30 seconds.
Action Taken When the DTC Sets
The liftgate control module will ignore the signal from the liftgate handle switch. Normal power liftgate operation will be available from the interior
liftgate control switch or from a request from the remote keyless entry module.
Conditions for Clearing the DTC
* The DTC will be current for as long as the fault is present.
* When the fault is no longer present, the DTC will be a history DTC.
* A history DTC will clear after 50 ignition cycles.
Diagnostic Aids
* If the liftgate will not release from the closed position, refer to Opening the Liftgate Without Electrical Power (See: Body and Frame/Doors,
Hood and Trunk/Trunk / Liftgate/Service and Repair/Procedures) for the appropriate procedure
* Whenever the liftgate control module loses power or is disconnected, the ignition must be cycled OFF then ON in order to reactivate the
liftgate control module.
Reference Information
Schematic Reference
Liftgate Schematics (See: Body and Frame/Locks/Diagrams/Electrical Diagrams/Liftgate Schematics)
