2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 521
DTC B2345 13
- Seat Heater Disable Circuit Low Voltage High/Temperature
Diagnostic Fault Information
Circuit/System Description
The seat heating control module controls seat heating operation for both the driver and front passenger seats. The heating elements are controlled
through individual high side and low side control circuits. The low side control circuits for both seats are connected to a common reference point
internal to the module. This reference point is biased to approximately 2.5 V. Before the seat heating control module will allow heated seat
operation, it checks to see if this biased voltage is shorted to ground or voltage. Once the module verifies that it is not closing to a shorted heating
element, it allows for heated seat operation. The module will then continue to monitor the heating elements for a shorted circuit.
Conditions for Running the DTC
The seat heating control module must be powered.
Conditions for Setting the DTC
B2345 13
Any temperature sensor input that remains below 1.5 V for more than 1 second.
Action Taken When the DTC Sets
The heated seat function for both front seats will be disabled.
Conditions for Clearing the DTC
* The current DTC will clear and set the code to history 3 seconds after the reference voltage returns to the normal operating range and the
ignition is cycled OFF then back to ACC or RUN.
* The history DTC will clear after 40 consecutive fault-free ignition cycles have occurred.
Reference Information
Schematic Reference
Heated/Cooled Seat Schematics (See: Body and Frame/Seats/Seat Temperature Element/Diagrams/Electrical Diagrams)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views/Connector End Views By Name)
Description and Operation
Heated/Vented Seat Description and Operation (See: Body and Frame/Seats/Seat Temperature Element/Description and Operation/Heated/Vented
Seat)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
