Diagnostic Procedure for Subaru Select Monitor Communication: Inspection

Trouble symptom:

Cannot communicate with [Driver Monitor].

Detecting condition:

Defective harness connector
Power supply circuit malfunction
Driver Monitoring Unit malfunctioning
Defective CAN communication circuit
Defective Subaru Select Monitor

NOTE: For diagnostic procedures, Ref. to COMMON (DIAGNOSTICS)>Diagnostic Procedure for Subaru Select Monitor Communication>INSPECTION