Diagnostic Procedure for Subaru Select Monitor Communication: 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.

Trouble symptom:

Cannot communicate with [Engine].

Detecting condition:

Defective connector
Power supply circuit malfunction
Defective CAN communication circuit
Defective Subaru Select Monitor

NOTE:

For diagnostic procedure, refer to the diagnosis for the engine. Ref. to ENGINE (DIAGNOSTICS) (H4DOTC)>BASIC DIAGNOSTIC PROCEDURE>PROCEDURE