2010 Cadillac Truck SRX FWD V6-3.0L Page 521

2010 Cadillac Truck SRX FWD V6-3.0L 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)