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Ground Short Inspection

G13203243Courtesy of SUBARU OF AMERICA, INC.
G13203244Courtesy of SUBARU OF AMERICA, INC.
NOTE: Main wiring harness or related lines may be shorted to ground, or shorted to ground in one of the control modules.
  1. CHECK BETWEEN RELATED LINES AND MAIN WIRING HARNESS. 
    1. Turn the ignition switch to OFF.
    2. Disconnect the steering sensor connector.
    3. Using a tester, measure the resistance between the steering sensor connector and chassis ground.

      Connector and terminal 

      (i74) No. 2 - Chassis ground:

      (i74) No. 3 - Chassis ground:

    Is the resistance less than 10 Ω?

    Yes  : Go to  2.

    No  : Currently, it is normal.

  2. CHECK CONTROL MODULE. 

    With the tester connected, disconnect control module.

    NOTE: Disconnect the body integrated unit at the end.

    Connector and terminal 

    (i74) No. 2 - Chassis ground:

    (i74) No. 3 - Chassis ground:

    Did the resistance change to 10 Ω or more?

    Yes  : Replace the control module whose resistance has changed. When the value changed at disconnecting the body integrated unit, Go to  3.

    No  : Repair or replace the short circuit of the main wiring harness and related lines between body integrated unit and ECM.

  3. CHECK BETWEEN MAIN WIRING HARNESSES. 

    Measure the resistance between body integrated unit connector and chassis ground using tester.

    Connector and terminal 

    (i171) No. 1 - Chassis ground:

    (i171) No. 2 - Chassis ground:

    Is the resistance less than 10 Ω?

    Yes  : Repair or replace the short circuit of the main wiring harness and related lines between ECM - body integrated unit.

    No  : Replace the body integrated unit. Ref. to SECURITY AND LOCKS>BODY INTEGRATED UNIT>REMOVAL .

G13203246Courtesy of SUBARU OF AMERICA, INC.
NOTE: Main wiring harness or related lines may be shorted to ground, or shorted to ground in one of the control modules.
  1. CHECK BETWEEN RELATED LINES AND MAIN WIRING HARNESS. 
    1. Turn the ignition switch to OFF.
    2. Disconnect the audio or navigation unit connector.
    3. Using a tester, measure the resistance between audio or navigation unit connector and chassis ground.

      Connector and terminal 

      (i87) No. 9 - Chassis ground:

      (i87) No. 10 - Chassis ground:

    Is the resistance less than 10 Ω?

    Yes  : Go to  2.

    No  : Currently, it is normal.

  2. CHECK CONTROL MODULE. 

    With the tester connected, disconnect control module.

    NOTE: Disconnect the body integrated unit at the end.

    Connector and terminal 

    (i87) No. 9 - Chassis ground:

    (i87) No. 10 - Chassis ground:

    Did the resistance change to 10 Ω or more?

    Yes  : Replace the control module whose resistance has changed. When the value changed at disconnecting the body integrated unit, Go to  3.

    No  : Repair or replace the short circuit of the main wiring harness and related lines between body integrated unit - combination meter.

  3. CHECK BETWEEN MAIN WIRING HARNESSES. 

    Measure the resistance between body integrated unit connector and chassis ground using tester.

    Connector and terminal 

    (B281) No. 17 - Chassis ground:

    (B281) No. 19 - Chassis ground:

    Is the resistance less than 10 Ω?

    Yes  : Repair or replace the short circuit of the main wiring harness and related lines between combination meter - body integrated unit.

    No  : Replace the body integrated unit. Ref. to SECURITY AND LOCKS>BODY INTEGRATED UNIT>REMOVAL .

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