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Home >> Subaru >> 2019 >> Ascent Base >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Communication Devices >> LAN Communication System (Diagnostics) >> CAN Communication Circuit Check >> Inspection >> Related Lines 53 - 61 Ω (Airbag Control Module System)

Related Lines 53 - 61 Ω (Airbag Control Module System)

Wiring diagram: 

CAN communication system Ref. to WIRING SYSTEM>CAN COMMUNICATION SYSTEM>WIRING DIAGRAM .

G13203243Courtesy of SUBARU OF AMERICA, INC.
G13203244Courtesy of SUBARU OF AMERICA, INC.
  1. CHECK BETWEEN RELATED LINES AND MAIN WIRING HARNESS. 
    1. Disconnect the airbag Control Module connector.
    2. Using a tester, measure the resistance between terminals in airbag Control Module connector.
      CAUTION: To measure the voltage and resistance of airbag system component, be sure to use the specified test harness. Ref. to AIRBAG (DIAGNOSTICS)>GENERAL DESCRIPTION>PREPARATION TOOL .

      Connector and terminal 

      (AB6) No. 18 - (AB6) No. 19:

    Is the resistance 400 Ω or more?

    Yes  : A related line between airbag 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 sensor connector.
    2. Using a tester, measure the resistance between the steering sensor connector and airbag Control Module connector.
      CAUTION: To measure the voltage and resistance of airbag system component, be sure to use the specified test harness. Ref. to AIRBAG (DIAGNOSTICS)>GENERAL DESCRIPTION>PREPARATION TOOL .

      Connector and terminal 

      (AB6) No. 18 - (i74) No. 2:

      (AB6) No. 19 - (i74) No. 3:

    Is the resistance 10 Ω or more?

    Yes  : Repair or replace the open circuit portion of airbag Control Module related lines.

    No  : Check DTC of airbag Control Module. Ref. to AIRBAG (DIAGNOSTICS)>DIAGNOSTIC TROUBLE CODE (DTC) .