2020 Subaru Forester BaseFACTORY OEM SERVICE PROCEDURE

Diagnostic Method

Judge as NG when the following conditions are established.

JUDGMENT VALUE - DIAGNOSIS 1

Malfunction Criteria Threshold Value
Monitoring A/D voltage More than 0.02 V
JUDGMENT VALUE - DIAGNOSIS 2

Malfunction Criteria Threshold Value
Monitoring A/D voltage Less than 4.98 V
JUDGMENT VALUE - DIAGNOSIS 3

Malfunction Criteria Threshold Value
Monitoring A/D voltage Less than 1.1 V or
More than 1.4 V
JUDGMENT VALUE - DIAGNOSIS 4

Malfunction Criteria Threshold Value
Inner power supply voltage/2 Less than 1.819 V or More than 3 V

Time needed for diagnosis:Β  200ms

Malfunction indicator light illumination:Β  Illuminates as soon as a malfunction occurs.

Factory Service Tools

Use the Manual With the Right Hardware

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When to See a Mechanic

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

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

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