Friday, November 13, 2020

2010 Cadillac Truck SRX AWD V6-3.0L Page 519

2010 Cadillac Truck SRX AWD V6-3.0L Page 519



Frame/Seats/Seat Temperature Element/Service and Repair/Rear Seat Cushion Heater Replacement (60 Percent Seat))



* Control Module References (See: Testing and Inspection/Programming and Relearning) for rear seat heating control module replacement,



setup, and programming



With Memory A45



DTC B2345 (With Memory A45)



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 Descriptors



DTC B2345 13



- Seat Heater Disable Circuit Low Voltage High/Temperature



Diagnostic Fault Information



Circuit/System Description



The seat memory 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 memory 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 memory 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.