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.
HomeLink Unit Connector for Inputs and Outputs
2020 Honda Civic Si, 4D SedanSECTION HomeLink Unit Connector for Inputs and Outputs
| Terminal number | Terminal name | Description | Signal |
|---|---|---|---|
| 1 | +B BACK UP | Power source for HomeLink unit | About battery voltage at all time |
| 2 | ILLUMI+ | Detects ILLUMI+ signal | With parking lights are ON: about battery voltage With parking lights are OFF: less than 0.2 V |
| 3 | Not used | --- | --- |
| 4 | Not used | --- | --- |
| 5 | BACK LT | Detects BACK LT signal | With the vehicle in the ON mode and R position/mode: about battery voltage If none of the above conditions are met: less than 0.2 V |
| 6 | GND | Ground for HomeLink unit | Less than 0.2 V at all times |
| 7 | IG2 A/C | IG2 power source | With the vehicle in the ON mode: about battery voltage |
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.