Ground Short Inspection (Main-Can)

Wiring diagram: 

CAN communication system Ref. to WIRING SYSTEM (CROSSTREK MODEL (HEV))>CAN COMMUNICATION SYSTEM>WIRING DIAGRAM .

Courtesy of SUBARU OF AMERICA, INC.

Courtesy of SUBARU OF AMERICA, INC.

1. CHECK BETWEEN RELATED LINES AND MAIN WIRING HARNESS  .
   1. Turn the ignition switch to OFF.
   2. Disconnect the steering angle sensor connector.
   3. Use a tester to measure the resistance between the steering angle sensor connector and chassis ground.

      Connector & 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 central gateway control module at the end.

   Connector & 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 central gateway control module, Go to  3.

   No:  Repair or replace the short circuit of the main wiring harness or related lines between the central gateway control module and ECM.

3. CHECK BETWEEN MAIN WIRING HARNESSES  .

   Using a tester, measure the resistance between the central gateway control module connector and chassis ground.

   Connector & terminal 

   (i366) No. 7 - Chassis ground:

   (i366) No. 22 - Chassis ground:

   Is the resistance less than 10 Ω?

   Yes:  Repair or replace the short circuit of the main wiring harness or related lines between ECM and central gateway control module.

   No:  Replace the central gateway control module. Ref. to SECURITY AND LOCKS>GATEWAY CONTROL MODULE .