2010 Cadillac CTS Sedan AWD V6-3.6L Page 443
Circuit/System Description
The position sensor that set this diagnostic trouble code (DTC) is either attached to the seat directional motor drive cable or directly to the motor it
monitors. It receives a 5 V reference and low reference from the memory seat module (MSM). The sensor sends a voltage signal that varies with the
movement of the seat through the signal circuit to the MSM. Then based on this voltage signal, the MSM determines the position of the seat.
Conditions for Running the DTC
The MSM must be powered.
Conditions for Setting the DTC
B1825 01, B1850 01, B2355 01, B2365 01, or B2375 01
If the MSM sees the analog input from this sensor is greater than 4.75 V, the sensor will be considered out of range and the MSM will set this DTC.
B1825 06, B1850 06, B2355 06, B2365 06, or B2375 06
If the MSM sees the analog input from this sensor is less than 0.22 V, the sensor will be considered out of range and the MSM will set this DTC.
B1825 5A, B1850 5A, B2355 5A, B2365 5A, or B2375 5A
This DTC will set, if the MSM is controlling a motor in one direction and its position sensor is tracking the motor in the opposite direction. The
sensor is either mounted or wired incorrectly, or the polarity of the motor control circuits are reversed.
Action Taken When the DTC Sets
The MSM disables the memory recall and easy exit/entry action commands of the motor monitored by the sensor. The motor will respond to
manual positioning commands.
Conditions for Clearing the DTC
* The current DTC will clear and set to history, when the MSM sees the analog input from the sensor as between 0.22 V and 4.75 V and the
ignition is cycled OFF then back to ACC or RUN.
* The history DTC will clear after 50 consecutive fault-free ignition cycles have occurred.
Diagnostic Aids
* All position sensors use common ground and 5 V reference circuits.
* If the 5 V reference circuit is shorted to voltage multiple position sensor codes will set.
* If the 5 V reference circuit is shorted to ground multiple position sensor codes will set.
* If the sensor ground circuit is open multiple codes will set.
* DTC failure type 5 A will set if the sensor setting this DTC is either mounted or wired incorrectly, or the polarity of the motor control circuits
