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 Outback BaseFACTORY OEM SERVICE PROCEDURE
Data Communication Module (DCM)
| Terminal No. | Contents | Measuring condition | Standard |
|---|---|---|---|
| (i105) No. 1 | - | - | - |
| (i105) No. 2 | - | - | - |
| (i105) No. 3 | LED GREEN | - | - |
| (i105) No. 4 β Chassis ground | i-button | i-button OFF - ON | 1.6 kΞ© or more β Less than 1 Ξ© |
| (i105) No. 5 β Chassis ground | SOS button | SOS button OFF - ON | 1.6 kΞ© or more β Less than 1 Ξ© |
| (i105) No. 6 | DCM local CAN H | - | - |
| (i105) No. 7 | (J) Vehicle external connection CAN-L | - | - |
| (i105) No. 8 | Ignition power supply | Ignition switch OFF β ON | Less than 1 V β 9 - 16 V |
| (i105) No. 9 | - | - | - |
| (i105) No. 10 | Battery power supply | Always | 9 - 16 V |
| (i105) No. 11 | - | - | - |
| (i105) No. 12 | - | - | - |
| (i105) No. 13 | LED RED | - | - |
| (i105) No. 14 <-> Chassis ground | GND | Always | Less than 1 Ξ© |
| (i105) No. 15 | - | - | - |
| (i105) No. 16 | DCM local CAN L | - | - |
| (i105) No. 17 | (J) Vehicle external connection CAN-H | - | - |
| (i105) No. 18 | Collision detection signal | - | - |
| (i105) No. 19 | MUTE | - | - |
| (i105) No. 20 β Chassis ground | ACC | Ignition switch OFF β ACC ON | Less than 1 V β 9 - 16 V |
| (i106) No. 1 | Front speaker input LH - | - | - |
| (i106) No. 2 | Front speaker output LH - | - | - |
| (i106) No. 3 | Front speaker input RH - | - | - |
| (i106) No. 4 | Front speaker output RH - | - | - |
| (i106) No. 5 | MIC signal OUT | - | - |
| (i106) No. 6 | MIC signal | - | - |
| (i106) No. 7 | MIC DET | - | - |
| (i106) No. 8 | MIC 5 V | - | - |
| (i106) No. 9 | Front speaker input LH + | - | - |
| (i106) No. 10 | Front speaker output LH + | - | - |
| (i106) No. 11 | Front speaker input RH + | - | - |
| (i106) No. 12 | Front speaker output RH + | - | - |
| (i106) No. 13 β Chassis ground | MIC GND OUT | Always | Less than 1 Ξ© |
| (i106) No. 14 | MIC GND IN | - | - |
| (i106) No. 15 | - | - | - |
| (i106) No. 16 | - | - | - |
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:
- 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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