Circuit/System Verification

WARNING: This page is about a different car, the 2015 Cadillac SRX. However, it is still accessible from the selected car via links, so may be relevant.

Use the table below in identifying specific module DTC B0081 application and symptom byte that sets with it.

DTC	Symptom Bytes
B0081 - Inflatable Restraint Sensing and Diagnostic Module	00	3A
B0081 - Passenger Presence Module	11	4B

NOTE:

This system is serviced as a kit (seat foam, module and sensing mat). Perform a passenger presence system preload procedure whenever a component is replaced. Refer to Passenger Presence System Programming and Setup .
Both Inflatable Restraint Sensing and Diagnostic Module and Passenger Presence Module set DTC B0081 but with different symptoms bytes. Therefore it is important to identify which module has set the DTC B0081. Use the symptom bytes as a way of identify the correct module to diagnose.
The Inflatable Restraint Sensing and Diagnostic Module sets a B0081 3A when an incorrect Passenger Presence Module is installed.

Verify that DTC B0081 3A is not set in the Inflatable Restraint Sensing and Diagnostic Module.
- If DTC B0081 3A is set in the Inflatable Restraint Sensing and Diagnostic Module
  Replace the K85 Passenger Presence Module.
- If DTC B0081 3A is not set in the Inflatable Restraint Sensing and Diagnostic Module

NOTE:

The Inflatable Restraint Sensing and Diagnostic Module sets a B0081 00 DTC when the Passenger Presence Module sets a DTC B0081 11 or B0081 4B.

Verify that DTC B0081 11 or DTC B0081 4B is not set in the Passenger Presence Module.
- If DTC B0081 11 or DTC B0081 4B is set in the Passenger Presence Module
  Perform the passenger presence system rezero procedure. Refer to Passenger Presence System Programming and Setup .
- If DTC B0081 11 or DTC B0081 4B is not set in the Passenger Presence Module
All OK.