Blind Spot Detection/Rear Cross Traffic Alert ON/OFF DISPLAY CANNOT BE SWITCHED IN THE ADVANCED EQUIPMENT SCREEN

Detecting condition: 

Communication circuit, radar sensor or MFD is abnormal.

Wiring diagram: 

• Multi-function display (MFD) system Ref. to WIRING SYSTEM>MULTI-FUNCTION DISPLAY (MFD) SYSTEM>WIRING DIAGRAM .
• CAN communication system Ref. to WIRING SYSTEM>CAN COMMUNICATION SYSTEM>WIRING DIAGRAM .

Courtesy of SUBARU OF AMERICA, INC.

1. CHECK IGNITION POWER SUPPLY CIRCUIT  .
   1. Turn the ignition switch to OFF.
   2. Disconnect the MFD connector.
   3. Turn the ignition switch to ON.
   4. Using a tester, measure the voltage between the MFD connector and chassis ground.

      Connector and terminal 

      (i122) No. 23 (+) - Chassis ground (-):

   Is the voltage 10 V or more?

   Yes  : Repair or replace the open circuit of harness. (Check battery as well as fuse.)

   No  : Go to  2 .

2. CHECK LAN SYSTEM  .

   Perform the diagnosis for LAN system. Ref. to LAN SYSTEM (DIAGNOSTICS)>BASIC DIAGNOSTIC PROCEDURE>PROCEDURE .

   Is the check result OK?

   Yes  : Go to  3 .

   No  : Perform the inspection according to the diagnosis for LAN system.

3. CHECK Blind Spot Detection/Rear Cross Traffic Alert  .
   1. Turn the ignition switch to ON.
   2. Using the Subaru Select Monitor, read the DTCs of [Blind Spot Detection/Rear Cross Traffic Alert(RH)] or [Blind Spot Detection/Rear Cross Traffic Alert(LH)]. Ref. to BLIND SPOT DETECTION/REAR CROSS TRAFFIC ALERT (DIAGNOSTICS)>DIAGNOSTIC TROUBLE CODE (DTC) .
      • Blind Spot Detection/Rear Cross Traffic Alert(RH)
      • Blind Spot Detection/Rear Cross Traffic Alert(LH)

   Are any DTCs displayed? (Current malfunction)

   Yes  : Perform the diagnosis according to displayed DTC. Ref. to BLIND SPOT DETECTION/REAR CROSS TRAFFIC ALERT (DIAGNOSTICS)>DIAGNOSTIC TROUBLE CODE (DTC)>LIST .

   No  : Replace the MFD. Ref. to INSTRUMENTATION/DRIVER INFO>MULTI-FUNCTION DISPLAY (MFD) .