Communication For Initializing Impossible (MFD)

Detecting condition:

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

Trouble symptom:

Communication is impossible between MFD and Subaru Select Monitor.

Wiring diagram:

Multi-function display (MFD) system Ref. to WIRING DIAGRAM , Multi-function Display (MFD) System.
CAN communication system Ref. to WIRING DIAGRAM , CAN Communication System.

Fig 1: Multi-Function Display Wiring Diagram

G08316654

Courtesy of SUBARU OF AMERICA, INC.

Step	Check	Yes	No
1 CHECK OTHER COMMUNICATION . Communicate with the system other than the MFD using the Subaru Select Monitor.	Is the communication to other control module possible?	Go to step 2 .	Perform the "Communication for Initializing Impossible" of LAN system. Ref. to COMMUNICATION FOR INITIALIZING IMPOSSIBLE , Subaru Select Monitor.
2 CHECK DTC . Read the DTC of the LAN system using the Subaru Select Monitor. Ref. to OPERATION , Read Diagnostic Trouble Code (DTC).	Is DTC detected?	Perform the diagnosis according to DTC.	Go to step 3 .
3 CHECK MFD . Turn the ignition switch to OFF. Disconnect the MFD connector. Connect the disconnected connectors. Communicate with the MFD using the Subaru Select Monitor.	Is communication possible?	It is possible that temporary poor communication occurs.	Replace the MFD. Ref. to Multi-function Display (MFD) .