CHECK EyeSight STEERING SWITCH

Trouble symptom: 

• Cruise control cannot be set. (Canceled immediately.)
• Cruise control cannot be released.

Wiring diagram: 

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

Courtesy of SUBARU OF AMERICA, INC.

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 (Port l4)
   • Cruise Control SW Voltage (Port 16)

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

   Yes  : Even if DTC is displayed, the circuit has returned to a normal condition at this time.

   Reproduce the failure, and then perform the diagnosis again.

   NOTE: In this case, temporary poor contact of connector, temporary open or short circuit of harness may be the cause.

   No  : Go to  2.

2. CHECK HARNESS  .
   1. Turn the ignition switch to OFF.
   2. Disconnect the stereo camera connector and steering roll connector (i72).
   3. Using a tester, measure the resistance between stereo camera connector and steering roll connector.

      Connector & terminal 

      (i72) No. 12 - (R137) No. 14:

      (i72) No. 11 - (R137) No. 16:

      (i72) No. 4 - (R137) No. 15:

      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  .

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

   Connector & terminal 

   (i72) No. 12 - Chassis ground:

   (i72) No. 11 - Chassis ground:

   (i72) No. 4 - 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 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.

      Courtesy 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  5.

      No  : Replace the steering roll connector.

5. CHECK SWITCH  .

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

   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>SWITCHES AND HARNESS .