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Home >> Jeep >> 2021 >> Cherokee Trailhawk >> Repair and Diagnosis (Single Page) >> Body & Frame >> Seats >> (Memory Seat Module (MSMD) - Electrical Diagnostics) >> DTC Troubleshooting >> B221C-00 - (MSM) Memory Seat Module Internal >> Diagnostic Test

Diagnostic Test

CHECK IF THE DTC IS ACTIVE 

  1. Ignition on, engine not running.
  2. With the scan tool, record and erase Memory Seat Module-Driver (MSMD) DTCs.
  3. Cycle the ignition switch from off to on.
  4. With the scan tool, read MSMD DTCs.

    Does the scan tool display this DTC as active?

    Yes 

    • Attempt to update (flash) the MSMD. If you are unable to update the controller, or if this DTC continues to reset after updating, replace and program the Memory Seat Module-Driver (MSMD) in accordance with the Service Information. Refer to MODULE, MEMORY, SEAT (MSM), REMOVAL .
    • Perform POWER SEAT SYSTEM VERIFICATION TEST. Refer to POWER SEAT SYSTEM VERIFICATION TEST  .

    No