Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2020 Subaru Forester BaseFACTORY OEM SERVICE PROCEDURE
Electrical Specification
| Terminal No. | Contents | Measuring condition | Standard |
|---|---|---|---|
| (i122) No. 1 | - | - | - |
| (i122) No. 2 | - | - | - |
| (i122) No. 3 | - | - | - |
| (i122) No. 4 | - | - | - |
| (i122) No. 5 | - | - | - |
| (i122) No. 6 | - | - | - |
| (i122) No. 7 | - | - | - |
| (i122) No. 8 | - | - | - |
| (i122) No. 9 | - | - | - |
| (i122) No. 10 | - | - | - |
| (i122) No. 11 | - | - | - |
| (i122) No. 12 | - | - | - |
| (i122) No. 13 | - | - | - |
| (i122) No. 14 | - | - | - |
| (i122) No. 15 (+) ←→ Chassis ground (-) | MFD SW (+) | When the battery is connected | When MFD SW is pushed: 0 V (1.3 V or less) Other than when MFD SW is pushed: 3.3 V (2.3 V or more) |
| (i122) No. 16 | - | - | - |
| (i122) No. 17 | - | - | - |
| (i122) No. 18 | - | - | - |
| (i122) No. 19 | CAN-H | - | - |
| (i122) No. 20 | CAN-L | - | - |
| (i122) No. 21 (+) ←→ Chassis ground (-) | GND | Always | 0 V |
| (i122) No. 22 | - | - | - |
| (i122) No. 23 (+) ←→ Chassis ground (-) | Ignition power supply | Ignition switch ON | Battery voltage |
| (i122) No. 24 (+) ←→ Chassis ground (-) | Battery power supply | When the battery is connected | Battery voltage |
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:
- • 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.
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