2021 Subaru Forester BaseFACTORY OEM SERVICE PROCEDURE

Check Clock System Communication Circuit

  1. CHECK POWER SUPPLY  .
    1. Disconnect the MFD connector.
    2. Turn the ignition switch to ON.
    3. Measure the voltage between MFD connector and chassis ground.

    Connector and terminal 

    (i122) No. 2 (+) - Chassis ground (-):

    Is the voltage 10 V or more?

    Yes 

    Go to  2 .

    No 

    Repair or replace the harness.

  2. CHECK GROUND CIRCUIT  .

    Measure the resistance between MFD connector and chassis ground.

    Connector and terminal 

    (i122) No. 3 - Chassis ground:

    Is the resistance less than 10 Ω?

    Yes 

    Go to  3 .

    No 

    Repair or replace the harness.

  3. CHECK HARNESS BETWEEN MFD AND COMBINATION METER ASSEMBLY  .
    1. Disconnect the connector of combination meter assembly.
    2. Check the harness between MFD and combination meter assembly.

    Connector and terminal 

    (i122) No. 8 - (i10) No. 11:

    Is harness normal?

    Yes 

    Go to  4 .

    No 

    Repair or replace the harness.

  4. CHECK MFD  .
    1. Remove the MFD.
    2. Attach the clock to another vehicle on which the clock display operates normally, and check its operation.

    Is MFD normal?

    Yes 

    Repair the poor contact of connector.

    No 

    Replace MFD.

Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.