Checking/Clearing Diagnostic Codes

WARNING: This page is about a different car, the 2018 Subaru BRZ. However, it is still accessible from the selected car via links, so may be relevant.

Preparation before inspection
1. Turn the ignition switch to OFF.
Checking diagnostic codes (reading with SSM4)
1. With IG OFF, connect SSM4 to DLC3.
2. Turn IG to ON, and turn on the SSM4.
3. Follow the SSM4 display and operate, and select [Each System] → [Power Window] → [DTC].
4. Check the diagnostic codes.
Clearing diagnostic code records (Cleared by the SSM4)
1. With IG OFF, connect SSM4 to DLC3.
2. Turn IG to ON, and turn on the SSM4.
3. Follow the SSM4 display and operate, and select [Each System] → [Power Window] → [Clear Memory] and delete DTC.
4. Inspect the diagnosis codes again, and check that the malfunction code was cleared, and that the normal code is displayed.
  CAUTION:
  - If you can't clear it, start over from IG OFF status.
  - Do not use the SSM4 to delete diagnostic codes until the cause of the trouble has been identified.