2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 260
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
Control Module References (See: Testing and Inspection/Programming and Relearning) for seat heating control module replacement, setup, and
programming
With Memory A45
DTC B242A (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 B242A 01
- Seat Heaters Common Circuit Short to Battery
DTC B242A 02
- Seat Heaters Common Circuit Short to Ground
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
* DTC B1325 must not be present.
* The seat memory control module must be powered.
Conditions for Setting the DTC
