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.
2012 Volvo C30 T-5, Standard TransFACTORY OEM SERVICE PROCEDURE
Start Control Module (SCU) (3/1): Terminal
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| Connector terminal | Signal type | Other |
|---|---|---|
| #1 | Power supply +75 accessory | Out |
| #2 | Power supply Crank | Out |
| #3 | Power supply Ignition on | Out |
| #4 | Not connected | Out |
| #5 | 30 supply power supply Key in | Out |
| #6 | 30 supply power supply Immobilizer | Out |
| #7 | Battery voltage | In |
| #8 | Solenoid | Out |
| Connector terminal | Signal type | Other |
|---|---|---|
| #1 | Ground | In |
| #2 | LIN communication | In / Out |
| #3 | Power supply Immobilizer | - |
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:
- • 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.