2010 Cadillac CTS Sedan AWD V6-3.6L Page 474
DTC B2430 0E
- Right Seat Heater Cushion Circuit Resistance Below Threshold
Diagnostic Fault Information
Circuit/System Description
The driver and front passenger heated seats are controlled by the memory seat module (MSM) that is located under the driver seat cushion. When
the heated seat is active, the module applies power through a common voltage supply circuit to the seat heater elements. The module controls the
seat temperature by providing a pulse width modulation (PWM) ground through the seat heater element control circuit to the heater elements. The
module then monitors the current flow through the heating elements and the rate of change of the temperature sensor to verify correct heated seat
operation.
Conditions for Running the DTC
The MSM must be powered and the heated seat must be enabled.
Conditions for Setting the DTC
B2425 0D, B2430 0D
By measuring current and voltage output to the seat heating elements every 10 seconds, the MSM calculates that the heating element resistance is
above the maximum resistance.
B2425 0E, B2430 0E
By measuring current and voltage output to the seat heating elements every 10 seconds, the MSM calculates that the heating element resistance is
below the minimum resistance.
Action Taken When the DTC Sets
The heated seat function for the affected seat will be disabled.
Conditions for Clearing the DTC
* The current DTC clears when the malfunction is no longer present, and the power mode changes to OFF then back to ACC or RUN.
* The history DTC will clear after 50 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)
Description and Operation
Heated/Vented Seat Description and Operation (See: Body and Frame/Seats/Seat Temperature Element/Description and Operation)
