Battery Short Inspection: Wiring diagram

CAN communication system Ref. to WIRING SYSTEM>CAN Communication System>WIRING DIAGRAM .

• Non-turbo model

Fig 1: Battery Short Inspection System Wiring Diagram Non-Turbo Model (1 Of 2)

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Fig 2: Battery Short Inspection System Wiring Diagram Non-Turbo Model (2 Of 2)

Courtesy of SUBARU OF AMERICA, INC.

Fig 3: Battery Short Inspection System Wiring Diagram Turbo Model (1 Of 2)

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Fig 4: Battery Short Inspection System Wiring Diagram Turbo Model (2 Of 2)

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1. CHECK BETWEEN RELATED LINES AND MAIN WIRING HARNESS. 
   1. Turn the ignition switch to ON.
   2. Using the tester, measure the voltage between terminals.

      Connector & terminal 

      (B40) No. 6 - Chassis ground:

      (B40) No. 14 - Chassis ground:

   Is the voltage less than 5 V?

   • Yes  : Currently, it is normal.
   • No  : Go to 2. 
2. CHECK CONTROL MODULE. 

   With the tester connected, disconnect control module.

   NOTE: Disconnect the body integrated unit at the end.

   Connector & terminal 

   (B40) No. 6 - Chassis ground:

   (B40) No. 14 - Chassis ground:

   Did the voltage change less than 5 V?

   • Yes  : Replace the control module whose voltage has changed. When the value changed at disconnecting the body integrated unit, Go to 3. 
   • No  : Repair or replace the short circuit of the harness between body integrated unit and ECM.
3. CHECK BETWEEN MAIN WIRING HARNESSES. 

   Using the tester, measure the voltage between terminals.

   Connector & terminal 

   (B281) No. 20 - Chassis ground:

   (B281) No. 28 - Chassis ground:

   Is the voltage less than 5 V?

   • Yes  : Replace the body integrated unit. Ref. to SECURITY AND LOCKS>Body Integrated Unit>REMOVAL .
   • No  : Repair or replace the short circuit of the harness between VDC Control Module and body integrated unit.