NON-TURBO MODEL (WITHOUT EyeSight AND X MODE): Wiring Diagram

Stop light system Ref. to WIRING SYSTEM>Stop Light System>WIRING DIAGRAM>WITHOUT EyeSight AND X MODE .

Fig 1: Non-Turbo Model Stop Light System Wiring Diagram (BLS OFF Stuck)

Courtesy of SUBARU OF AMERICA, INC.

1. CHECK STOP LIGHT SWITCH. 
   1. Check the stop light switch. Ref. to BRAKE>Stop Light Switch>INSTALLATION .

   Is the installation position of the stop light switch correct?

   • Yes  : Go to 2. 
   • No  : Adjust the installation position of the stop light switch. Ref. to BRAKE>Stop Light Switch>INSTALLATION .
2. CHECK STOP LIGHT SWITCH. 
   1. Turn the ignition switch to OFF.
   2. Disconnect the stop light switch connector.
   3. Measure the resistance of stop light switch terminals.

      Terminals 

      No. 1 -No. 2:

   Is the resistance 1 Ω or less when the stop light switch is ON (when pedal is depressed)?

   • Yes  : Go to 3. 
   • No  : Replace the stop light switch. Ref. to BRAKE>Stop Light Switch .
3. CHECK STOP LIGHT POWER SUPPLY. 

   Measure the voltage between stop light switch terminal and chassis ground.

   Connector & terminal 

   (B65) No. 1 (+) - Chassis ground (-):

   Is the voltage 10 - 15 V?

   • Yes  : Go to 4. 
   • No  : Repair the stop light power supply circuit.
4. CHECK STOP LIGHT SWITCH HARNESS (CHECK FOR OPEN CIRCUIT). 
   1. Disconnect the connector from the VDCCM&H/U.
   2. Measure the resistance between VDCCM&H/U and stop light switch.

      Connector & terminal 

      (B65) No. 2 - (B310) No. 6:

   Is the resistance less than 1 Ω?

   • Yes  : Go to 5. 
   • No  : Repair the stop light switch circuit.
5. CHECK POOR CONTACT OF CONNECTORS. 

   Is there poor contact of connector between stop light switch and VDCCM&H/U?

   • Yes  : Repair the connector.
   • No  : Go to 6. 
6. CHECK VDCCM&H/U. 
   1. Connect all connectors.
   2. Clear the memory. Ref. to BRAKE CONTROL (DIAGNOSTICS)>Clear memory .
   3. Perform the Inspection Mode. Ref. to BRAKE CONTROL (DIAGNOSTICS)>Inspection Mode .
   4. Read the DTC. Ref. to BRAKE CONTROL (DIAGNOSTICS)>Read Diagnostic Trouble Code (DTC) .

   Is the same DTC displayed?

   • Yes  : Replace the VDCCM only. Ref. to VEHICLE DYNAMICS CONTROL (VDC)>VDC Control Module and Hydraulic Control Unit (VDCCM&H/U)>REPLACEMENT .
   • No  : Go to 7. 
7. CHECK DETECTION OF OTHER DTCS FOR VDC. 

   Ref. to BRAKE CONTROL (DIAGNOSTICS)>Read Diagnostic Trouble Code (DTC) .

   Is any other DTC displayed?

   • Yes  : Perform the diagnosis according to DTC. Ref. to BRAKE CONTROL (DIAGNOSTICS)>List of Diagnostic Trouble Code (DTC) .
   • No  : Currently, it is normal. There may have been a temporary poor contact in the harness and connector or a temporary noise interference.