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.
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HOMESERVICE MANUALSSUBARU2014IMPREZA SPORT LIMITEDREPAIR AND DIAGNOSISBODY & FRAMEDOOR LOCKSKEYLESS ACCESS WITH PUSH BUTTON START SYSTEM (DIAGNOSTICS)CONTROL MODULE I/O SIGNALELECTRICAL SPECIFICATIONID CODE BOX
2014 Subaru Impreza Sport Limited
Id Code Box
2014 Subaru Impreza Sport LimitedSECTION Id Code Box
| Terminal No. | Terminal symbol | Content |
|---|---|---|
| (B422) No. 1 | +B | +B |
| (B422) No. 2 | LIN | LIN communication |
| (B422) No. 3 | IMO2 | Immobilizer communication 2 |
| (B422) No. 4 | IMO1 | Immobilizer communication 1 |
| (B422) No. 5 | GND | GND |
NOTE:
Disconnect the control module connector before checking the following items.
| Terminal No. | Standard | Measuring condition | Item |
|---|---|---|---|
| 1(+B) ←→ 5 (GND) | 10 - 14 V | Always | Voltage |
| 3 (IMO2) ←→ 5 (GND) | 0 V | Ignition OFF | Voltage |
| 4 (IMO1) ←→ 5 (GND) | 0 V | Ignition OFF | Voltage |
| 5 (GND) ←→ Chassis ground | Continuity exists | Always | Continuity |
NOTE:
Connect the control module connector before checking the following items.
| Terminal No. | Standard | Measuring condition | Item |
|---|---|---|---|
| 3 (IMO2) ←→ 5 (GND) | 0 V | Ignition OFF | Voltage |
| 3 (IMO2) ←→ 5 (GND) | Waveform 1 | Ignition ON | Voltage |
| 4 (IMO1) ←→ 5 (GND) | 0 V | Ignition OFF | Voltage |
| 4 (IMO1) ←→ 5 (GND) | Waveform 1 | Ignition ON | Voltage |
Waveform 1
| Item | Content |
|---|---|
| Measured terminal | 4 (IMO1) ←→ 5 (GND) |
| Equipment setting | 5 V/DIV, 100 ms/DIV |
| Measuring condition | Ignition ON |
RENDER: 1.0x
NO RELATED
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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.