Circuit/System Verification

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2011 GMC Yukon XL, 2011 GMC Yukon, 2011 Chevrolet Tahoe, 2011 Chevrolet Suburban, and 2011 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.

IMPORTANT:

When removing connectors inspect for damage, corrosion or poor connection. Damage or corrosion in the following requires repair or replacement of the affected component/connector.
Passenger presence module
SDM
Passenger presence module harness connector
SDM wiring harness connector

Ignition ON, verify that DTC B0081 is the only DTC set in the SDM or passenger presence module.
- If any other DTCs are set, refer to Diagnostic Trouble Code (DTC) List - Vehicle .
Verify DTC B0081 00, or DTC B0081 3A is not set in the SDM. If any of these DTCs set in the SDM diagnose the following:
- SDM DTC B0081 00:
  - If DTC B0081 00 sets in the SDM then the passenger presence module will set DTC B0081 4B or DTC B0081 5A. Refer to step #3 and diagnose the passenger presence module DTC's. By diagnosing these two DTC's in the passenger presence module, DTC B0081 00 will be fixed in the SDM.
- SDM DTC B0081 3A:
  - Either an incorrect replacement passenger presence module or SDM was placed in this vehicle. Check and make sure the part #'s are correct for each module. If both part #'s are correct clear this DTC and see if DTC B0081 3A resets as a current DTC. If DTC B0081 3A resets then replace the passenger presence module. Clear DTCs again and check if DTC B0081 3A sets as current again. If DTC B0081 3A sets again then replace the SDM.
Verify DTC B0081 4B, or DTC B0081 5A is not set in the passenger presence module. If either of these DTCs set in the passenger presence module diagnose the following:
- PPS DTC B0081 4B:
  - If DTC B0081 4B sets in the passenger presence module if the correct calibration was not learned by the passenger presence module. Perform the Passenger Presence System Rezeroing procedure. Refer to Passenger Presence System Rezeroing .
- PPS DTC B0081 5A:
  - If DTC DTC B0081 5A sets in the passenger presence module check the connections at the SDM and passenger presence module. Clear the DTC's and check if DTC B0081 5A sets again in the passenger presence module. If DTC B0081 5A sets again replace the passenger presence module.