Related Lines, More Than 52 Ω And Less Than 62 Ω (A/C Control Module)

Wiring diagram: 

CAN communication system Ref. to WIRING SYSTEM>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. Disconnect the A/C control module connector.
   2. Using a tester, measure the resistance between terminals in A/C control module connector.

      Connector & terminal 

      (i 181) No. 3 - (i181) No. 4:

      Is the resistance 400 Ω or more?

      Yes  : Related lines between A/C control module and main wiring harness is open, or main wiring harness is open at two places or more.

      No  : Go to  2.

2. CHECK RELATED LINES  .
   1. Disconnect the steering angle sensor connector.
   2. Using a tester, measure the resistance between the A/C control module connector and steering angle sensor connector.

      Connector & terminal 

      (i 181) No. 3 - (i74) No. 3:

      (i 181) No. 4 - (i74) No. 2:

      Is the resistance 10 Ω or more?

      Yes  : Repair or replace the open circuit of A/C control module related lines.

      No  : Check DTC of A/C control module. Ref. to AIR CONDITIONER (DIAGNOSTICS)>DIAGNOSTIC TROUBLE CODE (DTC) .