Basic Inspection
WARNING: This page is about a different car, the 2022 Subaru WRX. However, it is still accessible from the selected car via links, so may be relevant.
Before performing diagnosis, check the following item which might affect the quality of the tire pressure monitoring system.
- Check the battery. Ref. to STARTING/CHARGING SYSTEMS (H4DOTC)>BATTERY>INSPECTION
- Check the fuse condition. Ref. to WIRING SYSTEM>TIRE PRESSURE MONITORING SYSTEM>WIRING DIAGRAM
Make sure that ampere of the fuse is setting value, and it is not blown out.
- Inspect that the tire pressure is within the specification while the tire is cool. (Refer to Tire Caution Label.)
- Check the tires for damage or the insertion of foreign matters.
- Check the connecting condition of harness and harness connector.
NOTE:
To check harness for open or short circuits, shake the suspected trouble spot or connector.