LEMON Manuals: Even more car manuals for everyone
Home >> Subaru >> 2015 >> WRX Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 160 (Blind Spot Detection System (Diagnostics)) >> Subaru Select Monitor >> Inspection >> Wiring Diagram

Subaru Select Monitor: Inspection: Wiring Diagram

WARNING: This page is about a different car, the 2016 Subaru Outback and 2016 Subaru Legacy. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: For the coupling connector, refer to "WIRING SYSTEM".

BSD/RCTA system < Ref. to appropriate wiring diagram in SYSTEM WIRING DIAGRAM article. >

Fig 1: Communication - Wiring Diagram
G10273367Courtesy of SUBARU OF AMERICA, INC.
DIAGNOSTIC PROCEDURE

Step Check Yes No
1 CHECK FUSE. 
  1. Turn the ignition switch to OFF.
  2. Check the fuse for radar sensor LH. < Ref. to RELAY AND FUSE . >
 Is it normal? Go to step 2  . Replace the fuse. If the replaced fuse has blown out immediately, repair the short circuit to ground in harness between fuse and radar sensor LH.
2 CHECK HARNESS (OPEN CIRCUIT). 
  1. Disconnect the radar sensor LH connector.
  2. Turn the ignition switch to ON.
  3. Using a tester, measure the voltage between radar sensor LH connector (harness side) and chassis ground.

    Connector & terminal 

    (R25) No. 5 (+) - Chassis ground (-): 

 Is the voltage 10 V or more? Go to step 3  . Repair the open circuit of harness between fuse and radar sensor LH connector.
3 CHECK HARNESS (OPEN CIRCUIT). 
  1. Turn the ignition switch to OFF.
  2. Using a tester, measure the resistance between radar sensor LH connector (harness side) and chassis ground.

    Connector & terminal 

    (R25) No. 10 - Chassis ground: 

 Is the resistance less than 1 Ω? Go to step 4  . Repair the open circuit in harness between radar sensor and chassis ground.
4 CHECK LAN SYSTEM. 
  1. Connect the radar sensor LH connector.
  2. Inspect LAN system. < Ref. to BASIC DIAGNOSTIC PROCEDURE . >
 Is it normal? Go to step 5  . Perform the inspection according to the diagnosis for LAN system.
5 CHECK RADAR SENSOR. 
Communicate with the radar sensor.		 Is communication possible? The circuit has returned to a normal condition at this time. Reproduce the failure, and then perform the diagnosis again.
NOTE: In this case, temporary poor contact of connector, temporary open or short circuit of harness may be the cause.
 Replace the radar sensor LH. < Ref. to RADAR SENSOR . >
scientia non olet · About LEMON Manuals