Communication For Initializing Impossible

Detecting condition: 

• Defective harness
• Power supply circuit malfunction
• Defective keyless access CONTROL MODULE
• 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

• Engine type: FA

  Courtesy of SUBARU OF AMERICA, INC.

• Engine type: EJ

  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

   Are any DTCs displayed?

   Yes: Perform the diagnosis of the displayed DTCs for LAN system.

   No: Go to  3

3. CHECK KEYLESS ACCESS CONTROL MODULE  .
   1. Turn the ignition switch to OFF.
   2. Disconnect the keyless access CONTROL MODULE 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 CONTROL MODULE. Ref. to SECURITY AND LOCKS>Keyless Access CONTROL MODULE

   CAUTION: For replacement procedure of keyless access CONTROL MODULE, refer to the "REGISTRATION MANUAL FOR IMMOBILIZER" provided as a separate volume. Contact an Authorized Subaru Dealership.