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.
Signal Specification
GENERAL
All values below are measured between the relevant terminal in column 1 and A1 in column 2 (effect ground) unless otherwise stated in parenthesis after the table entry.
It is important to connect the breakout box and check the ground terminals before taking readings.
| U= | DC voltage in volts (V) | UAC = | AC voltage in volts (V) |
| Ubat = | Battery voltage (V) | f = | Frequency in Hertz (Hz) |
| Ulow = | Voltage approximately 0 V | t = | Time in seconds |
| PWM = | Pulse width modulated signal as a % |
| Breakout box terminal | Control module terminal | Signal type | Ignition on | Other |
| # | #1 | - | - | |
| # | #2 | - | - | |
| # | #3 | - | - | |
| # | #4 | - | - | |
| # | #5 | - | - | |
| # | #6 | Power supply | U = Ubat | |
| # | #7 | - | - | |
| # | #8 | - | - | |
| # | #9 | - | - | |
| # | #10 | - | - | |
| # | #11 | Ground | U = Ulow | |
| # | #12 | - | - |
| Breakout box terminal | Control module terminal | Signal type | Ignition on | Other |
| # | #1 | - | - | |
| # | #2 | RGB sync signal | U = 1.0 Vp-p | Analog signal with varying amplitude |
| # | #3 | Reference signal | U = Uref | |
| # | #4 | Video, signal B | U = 0.7 Vp-p | Voltage is to be compared to #C2:3 reference signal. |
| # | #5 | Video, signal G | U = 0.7 Vp-p | Voltage is to be compared to #C2:3 reference signal. |
| # | #6 | Video, signal R | U = 0.7 Vp-p | Voltage is to be compared to #C2:3 reference signal. |
| # | #H | Screen |
| Breakout box terminal | Control module terminal | Signal type | Ignition on | Other |
| #1 | MOST input signal | Optical input signal when the MOST network is activated | ||
| #2 | MOST output signal | Optical output signal when the MOST network is activated |
| Control module terminal | Signal type | Other |
| #1 | Antenna signal | GPS signal |
| #2 | Antenna signal | Screen |
| Control module terminal | Signal type | Other |
| #1 | Antenna signal | TMC signal |
| #2 | Antenna signal | Screen |
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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.
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