Related Lines, More Than 52 Ω And Less Than 62 Ω (MFD)

Wiring diagram: 

CAN communication system Ref. to WIRING SYSTEM (IMPREZA MODEL)>CAN COMMUNICATION SYSTEM>WIRING DIAGRAM . Ref. to WIRING SYSTEM (CROSSTREK MODEL (EXCEPT FOR HEV))>CAN COMMUNICATION SYSTEM>WIRING DIAGRAM .

Courtesy of SUBARU OF AMERICA, INC.

1. CHECK BETWEEN RELATED LINES AND MAIN WIRING HARNESS  .
   1. Disconnect the MFD connector.
   2. Using a tester, measure the resistance between terminals in MFD connector.

      Connector and terminal 

      (i122) No. 19 - (i122) No. 20:

   Is the resistance 400 Ω or more?

   Yes:  Related lines between MFD and main wiring harness is open, or main wiring harness is open at two places or more.

   No:  Go to  2.

2. CHECK RELATED LINES  .
   1. Disconnect the audio or navigation unit connector.
   2. Using a tester, measure the resistance between MFD connector and audio or navigation unit connector.

      Connector and terminal 

      (i122) No. 19 - (i87) No. 9:

      (i122) No. 20 - (i87) No. 10:

   Is the resistance 10 Ω or more?

   Yes:  Repair or replace the open circuit of MFD related lines.

   No:  The communication harness is normal. Check DTC of MFD. Ref. to MULTI-FUNCTION DISPLAY (DIAGNOSTICS)>DIAGNOSTIC TROUBLE CODE (DTC) .