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 C70FACTORY OEM SERVICE PROCEDURE
Infotainment Control Module (ICM), Signal Specification
General
NOTE:
It is important to check ground terminals before taking readings.
| U= | DC voltage in volts (V) | Ulow = | Voltage approximately 0 V |
| Ubat = | Battery voltage (V) |
CONNECTOR A
| Terminal | Signal type | Ignition on | Other |
|---|---|---|---|
| #A1 | Antenna signal | - | Input signal FMsub |
| #A2 | Antenna signal | - | Input signal AM/FM main. Vehicles equipped with TMC - Phantom power supply for traffic message channel module (TMC). Vehicles without TMC - Phantom power supply for antenna amplifier. |
CONNECTOR B
| Terminal | Signal type | Ignition on | Other |
|---|---|---|---|
| #B1 | 30 supply | U = Ubat |
CONNECTOR C
| Terminal | Signal type | Ignition on | Other |
|---|---|---|---|
| #C1 | MOST input signal | Optical input signal when the MOST network is activated | |
| #C2 | MOST output signal | Optical output signal when the MOST network is activated |
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.