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Check Eyesight Steering Switch

Trouble symptom: 

Wiring diagram: 

EyeSight system Ref. to WIRING SYSTEM>EYESIGHT SYSTEM>WIRING DIAGRAM

G14615025Courtesy of SUBARU OF AMERICA, INC.
CAUTION:

Before performing diagnosis, refer to "CAUTION" in "General Description". Ref. to  EYESIGHT (DIAGNOSTICS)>GENERAL DESCRIPTION>CAUTION  

  1. CHECK DATA MONITOR  .

    Using the Subaru Select Monitor, check the following items in the [Data Monitor] of [EyeSight]. Ref. to EYESIGHT (DIAGNOSTICS)>DATA MONITOR 

    • Cruise Control SW Voltage (Port19)
    • Cruise Control SW Voltage (Port20)

    Is the voltage according to the pressed EyeSight steering switch displayed?

    For [Cruise Control SW Voltage (Port19)], refer to terminal No. 19 of the control module I/O signal.

    For [Cruise Control SW Voltage (Port20)], refer to terminal No. 20 of the control module I/O signal. Ref. to EYESIGHT (DIAGNOSTICS)>CONTROL MODULE I/O SIGNAL 

    Yes  : Currently, it is normal. Finish the diagnosis.

    No  : Go to  2.

  2. CHECK HARNESS (OPEN CIRCUIT)  .
    1. Turn the ignition switch to OFF.
    2. Disconnect the connector from the stereo camera.
    3. Disconnect the connector (i95) from the steering roll connector.
    4. Using a tester, measure the resistance between stereo camera connector and steering roll connector.

      Connector & terminal 

      (i95) No. 4 - (Rf21) No. 7:

      (i95) No. 11 - (Rf21) No. 19:

      (i95) No. 12 - (Rf21) No. 20:

    Is the resistance less than 1 Ω?

    Yes  : Go to  3.

    No  : Repair or replace an open circuit in harness between stereo camera connector and steering roll connector.

  3. CHECK HARNESS (GROUND SHORT CIRCUIT)  .

    Using a tester, measure the resistance between the steering roll connector and chassis ground.

    Connector & terminal 

    (i95) No. 4 - Chassis ground:

    (i95) No. 11 - Chassis ground:

    (i95) No. 12 - Chassis ground:

    Is the resistance 1 MΩ or more?

    Yes  : Go to  4.

    No  : Repair or replace the short circuit to ground in harness between stereo camera connector and steering roll connector.

  4. CHECK HARNESS (SHORTED BETWEEN LINES)  .

    Using a tester, measure the resistance between terminals of steering roll connector.

    Connector & terminal 

    (i95) No. 4 - (i95) No. 11:

    (i95) No. 4 - (i95) No. 12:

    (i95) No. 11 - (i95) No. 12:

    Is the resistance 1 MΩ or more?

    Yes  : Go to  5.

    No  : Repair or replace the short between lines in the harness between stereo camera connector and steering roll connector.

  5. CHECK STEERING ROLL CONNECTOR  .
    1. Remove the driver's airbag module. Ref. to AIRBAG SYSTEM>DRIVER'S AIRBAG MODULE>REMOVAL
    2. Using a tester, measure the resistance between terminals of steering roll connector.
      G14615034Courtesy of SUBARU OF AMERICA, INC.
      Terminal No. Inspection conditions Standard
      A4 - C12 Always Less than 1 Ω
      A3 - C11 Always Less than 1 Ω
      A9 - C4 Always Less than 1 Ω

    Is the check result OK?

    Yes  : Go to  6.

    No  : Replace the steering roll connector. Ref. to AIRBAG SYSTEM>ROLL CONNECTOR

  6. CHECK SWITCH  .

    Check the EyeSight steering switch. Ref. to EYESIGHT>STEERING SWITCH>INSPECTION

    Is the check result of EyeSight steering switch OK?

    Yes  : Replace the stereo camera. Ref. to EYESIGHT>STEREO CAMERA

    No  : Replace the EyeSight steering switch. Ref. to EYESIGHT>STEERING SWITCH

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