Communication For Initializing Impossible

DETECTING CONDITION: 

• Defective harness
• Power supply circuit malfunction
• Defective keyless access CM
• Defective CAN communication circuit
• Defective Subaru Select Monitor

TROUBLE SYMPTOM: 

Not communicable with Subaru Select Monitor.

WIRING DIAGRAM: 

• Push button start system Ref. to WIRING SYSTEM > Push Button Start System >  WIRING DIAGRAM  .
• CAN communication system Ref. to WIRING SYSTEM > CAN Communication System >  WIRING DIAGRAM  .

Fig 1: CAN Communication System Wiring Diagram

Courtesy of SUBARU OF AMERICA, INC.

1. CHECK OTHER COMMUNICATION  .

   Communicate with the system other than the keyless access system using the Subaru Select Monitor.

   Is the communication to other control module possible?

   Yes: Go to   2  .

   No: Perform the "Communication for Initializing Impossible" of LAN system. Ref. to LAN SYSTEM (DIAGNOSTICS) > Subaru Select Monitor >  COMMUNICATION FOR INITIALIZING IMPOSSIBLE  .

2. CHECK DTC  .

   Read the DTC of the LAN system using the Subaru Select Monitor. Ref. to LAN SYSTEM (DIAGNOSTICS) > Read Diagnostic Trouble Code (DTC) >  OPERATION  .

   Is DTC detected?

   Yes: Perform the diagnosis according to DTC.

   No: Go to   3  .

3. CHECK KEYLESS ACCESS CM  .
   1. Turn the ignition switch to OFF.
   2. Disconnect the keyless access CM connector.
   3. Connect the disconnected connectors.
   4. Perform communication with the keyless access system using the Subaru Select Monitor.

   Is communication possible?

   Yes: It is possible that temporary poor communication occurs.

   No: Replace the keyless access CM. Ref. to SECURITY AND LOCKS > Keyless Access CM >  REMOVAL  .