B221A

B221A-00-(HSM) HEATED SEAT MODULE INTERNAL



- When Monitored:
With the engine running.

- Set Condition:
If the Heated Seat Module (HSM) detects an internal component failure.





VERIFY DIAGNOSTIC TROUBLE CODE (DTC) IS ACTIVE
1. Turn the ignition on.
2. Using a scan tool, record and erase DTCs.
3. Turn the ignition off.
4. Start the engine and let it run.
5. Operate each of the heated and vented systems one at a time, as equipped.
6. Using a scan tool, read DTCs.

Is the DTC active?

Yes

- Replace the Heated Seat Module (HSM).
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- The conditions that caused this code to set are not present at this time. Verify seat harness is routed correctly to the HSM. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors. Look for chafed, pierced, pinched, or partially broken wires and broken, bent, pushed out, spread, corroded, or contaminated terminals. Attempt to reproduce condition by adjusting the seat.
- Perform the BODY VERIFICATION TEST. Body Verification Test.