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.