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64 Ω Or More: Wiring Diagram

CAN communication system. See appropriate SYSTEM WIRING DIAGRAM article.

Fig 1: CAN Communication System - Wiring Diagram
G08585509Courtesy of SUBARU OF AMERICA, INC.
NOTE: When the CAN communication circuit is measured, combined resistance of end resistance (120 Ω) in body integrated unit and end resistance (120 Ω) in keyless access CM can be measured. The combined resistance is approximately 57 - 63 Ω. When the measured resistance value is 64 Ω or more, either of end resistance or main wiring harness may have malfunction such as open circuit.
Step Check Yes No
1 CHECK CONTROL MODULE. 
  1. Disconnect the connectors of the body integrated unit and the keyless access CM.
  2. Using a tester, measure the resistance between control module terminals.

    Connector & terminal 

    (B280) No. 11 - No. 21: 

    (i242) No. 15 - No. 14: 

Is the resistance 115 - 135 Ω or more? Go to step . Replace the control module whose value is out of the specification.
2 CHECK HARNESS. 
Using a tester, check continuity between terminals.
Connector & terminal 
(B280) No. 11 - No. 21: 
(i242) No. 15 - No. 14: 
Is there continuity? It is possible that temporary poor communication occurs. Repair or replace the open circuit of harness.