Diagnostic Procedure for Subaru Select Monitor Communication: Inspection

Communication error with stereo camera

Detecting condition:

Defective connector
Power supply circuit malfunction
Defective stereo camera
Defective CAN system
Defective Subaru Select Monitor

Trouble symptom:

EyeSight warning light blinks.

Wiring diagram:

CAN communication system Ref. to WIRING SYSTEM>CAN COMMUNICATION SYSTEM>WIRING DIAGRAM

EyeSight system Ref. to WIRING SYSTEM>EYESIGHT SYSTEM>WIRING DIAGRAM

Courtesy of SUBARU OF AMERICA, INC.

CAUTION:

Before performing diagnosis, refer to "CAUTION" in "General Description". Ref. to EYESIGHT (DIAGNOSTICS)>GENERAL DESCRIPTION>CAUTION

CHECK SUBARU SELECT MONITOR .
1. Connect the Subaru Select Monitor to another vehicle.
2. Check communication condition between Subaru Select Monitor and vehicle.
Is communication performed normally?

Yes : Go to 2.

No : Subaru Select Monitor unit or diagnosis cable is faulty.
CHECK COMMUNICATION FOR INITIALIZING ERROR .
Perform the communication for initializing with each module by connecting the Subaru Select Monitor. (For systems whose module can communicate with diagnostic devices)

NOTE:
By performing [CAN bus check], confirmation of minimal connection modules is possible. Ref. to LAN SYSTEM (DIAGNOSTICS)>CAN BUS CHECK

Is the communication possible with all modules?

Yes : Currently, it is normal. Finish the diagnosis.

No :
- When the communication fails with all modules, Go to 3.
- When the communication fails with particular module only, perform the inspection using the check sheet of communication for initializing. Ref. to LAN SYSTEM (DIAGNOSTICS)>DIAGNOSTIC PROCEDURE FOR SUBARU SELECT MONITOR COMMUNICATION>INSPECTION>CHECK USING THE CHECK SHEET OF COMMUNICATION FOR INITIALIZING
CHECK DATA LINK CONNECTOR (OPEN CIRCUIT) .
Use a tester to check for continuity in the ground circuit.

Connector & terminal

(i221) No. 4 - Chassis ground:

(i221) No. 5 - Chassis ground:

Is there continuity?

Yes : Go to 4.

No : Repair or replace the open circuit.
CHECK SUBARU SELECT MONITOR COMMUNICATION .
1. Turn the ignition switch to ON.
2. Using a tester, check the power supply of data link connector.
  Connector & terminal
  
  (i221) No. 8 (+) - Chassis ground (-):
  
  (i221) No. 16 (+) - Chassis ground (-):
Is the voltage 10 V or more?

Yes : Currently, it is normal. Finish the diagnosis.

No : Check the power supply circuits to the data link connector. (Including the fuses)