Saturday, June 15, 2019

2019 Cadillac Truck Escalade AWD V8-6.2L Diagnostic Instructions Page 454


Circuit Description



The position sensor that sets 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-volt reference and ground 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 memory seat module must be powered.



Conditions for Setting the DTC



B1825 01, B1850 01, B1860 01, B2355 01, B2365 01, B2375 01



If the MSM sees the analog input from this sensor is greater than 4.75 volts, the sensor will be considered out of range and the MSM will set this



DTC.



B1825 06, B1850 06, B1860 06, B2355 06, B2365 06, B2375 06



If the MSM sees the analog input from this sensor is less than 0.22 volts, the sensor will be considered out of range and the MSM will set this DTC.



B1825 5A, B1850 5A, B1860 5A, B2355 5A, B2365 5A, 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 0.22-4.75 volts and the



ignition is cycled OFF then back to ACC or RUN.



* A history DTC will clear after 50 consecutive fault-free ignition cycles have occurred.



Diagnostic Aids



* All position sensors use common ground and 5-volt reference circuits.



* If the 5-volt reference circuit is shorted to voltage, multiple codes will set.



* If the 5-volt reference circuit is shorted to ground, multiple codes will set.



* If the sensor ground circuit is open, multiple codes will set.

No comments:

Post a Comment