DTC Descriptor
DTC B0997 31: Memory Seat and Mirror Module Checksum ErrorDiagnostic Fault Information
Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
Circuit/System Description
The EEPROM (Electrically Erasable Programmable Read Only Memory) is part of the printed circuit board housed within the memory seat module (MSM). It stores variables required for the operation of the power seat system.
DTC B0997 will set if the EEPROM checksum is incorrect. The testing of the EEPROM checksum occurs every time the ignition is turned on. The DTC is reset when the EEPROM checksum is tested as being correct. The DTC is logged as a History DTC.
Conditions for Running the DTC
The MSM runs the program to detect an internal fault or compatibility concern when power up is commanded. The only requirements are voltage and ground. This program runs even if the voltage is out of the valid operating range.
Conditions for Setting the DTC
The MSM internal EEPROM has failed or is corrupt.
Action Taken When the DTC Sets
The system will set the DTC and disable itself.
Conditions for Clearing the DTC
| • | The condition responsible for setting the DTC no longer exists. |
| • | The DTC can be cleared using a scan tool. |
Reference Information
Electrical Information Reference
| • | Circuit Testing . |
| • | Wiring Repairs . |
Scan Tool Reference
Circuit/System Testing
- Verify that no other DTCs are not set.
- Using a scan tool, select the DTC display function.
| ⇒ | If any other DTCs are set, refer to Diagnostic Trouble Code (DTC) List - Vehicle Diagnostic Trouble Code (DTC) List. |
| ⇒ | If DTC B0997 31 is set to current, replace the MSM. |
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
