Related Lines, More Than 52 Ω And Less Than 62 Ω (BSD/RCTA)

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 .

• Impreza model

  Courtesy of SUBARU OF AMERICA, INC.

  Courtesy of SUBARU OF AMERICA, INC.

• Crosstrek model

Courtesy of SUBARU OF AMERICA, INC.

Courtesy of SUBARU OF AMERICA, INC.

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

      Connector and terminal 

      (R25) No. 2 - (R25) No. 7:

   Is the resistance 400 Ω or more?

   Yes:  A related line between radar sensor LH 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 steering sensor connector.
   2. Using a tester, measure the resistance between the radar sensor LH connector and steering sensor connector.

      Connector and terminal 

      (R25) No. 2 - (i74) No. 3:

      (R25) No. 7 - (i74) No. 2:

   Is the resistance 10 Ω or more?

   Yes:  Repair or replace the open circuit of the Blind Spot Detection/Rear Cross Traffic Alert related lines.

   No:  The communication harness is normal. Check DTC of radar sensor. Ref. to BLIND SPOT DETECTION/REAR CROSS TRAFFIC ALERT (DIAGNOSTICS)>DIAGNOSTIC TROUBLE CODE (DTC) .