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 the values given below are between the respective terminal in column 1 and terminal #C1:12 in column 2 (power 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 off Active/Inactive | Ignition on Active/Inactive | Other |
|---|---|---|---|---|---|
| #1 | #C1:1 | - | - | - | |
| #2 | #C1:2 | Local CAN bus FLR, low signal | 1.5 - 2.5 V | 1.5 - 2.5 V | During communication |
| #3 | #C1:3 | Local CAN bus FLR, high signal | 2.5 - 3.5V | 2.5 - 3.5V | During communication |
| #4 | #C1:4 | - | - | - | |
| #5 | #C1:5 | - | - | - | |
| #6 | #C1:6 | - | - | - | |
| #7 | #C1:7 | - | - | - | |
| #8 | #C1:8 | Communication CAN_L high speed network | During communication the voltage is 1.5 - 2.5 V | ||
| #9 | #C1:9 | Communication CAN_H high speed network | During communication the voltage is 2.0 - 3.5V | ||
| #10 | #C1:10 | Visual indicator, collision warning terminal C1:3, power supply | U=0.2 - 5.0V/Ulow | U=0.2 - 5.0V/Ulow | Output, PWM signal |
| #11 | #C1:11 | Visual indicator, collision warning terminal C1:2, power supply | U=0.2 - 5.0V/Ulow | U=0.2 - 5.0V/Ulow | Output, PWM signal |
| #12 | #C1:12 | Power ground | U low /Ulow | U low /Ulow | |
| #13 | #C1:13 | Visual indicator, collision warning terminal C1:1, power supply | U=0.2 - 5.0V/Ulow | U=0.2 - 5.0V/Ulow | Output, PWM signal |
| #14 | #C1:14 | 15-feed | U low /Ulow | Ulow / Ubat | |
| #15 | #C1:15 | Power supply | Ulow / Ubat | Ulow / Ubat | Via interior lighting relay, CEM |
| #16 | #C1:16 | - | - | - | |
| #17 | #C1:17 | - | - | - | |
| #18 | #C1:18 | - | - | - | |
| #19 | #C1:19 | - | - | - | |
| #20 | #C1:20 | - | - | - | |
| #21 | #C1:21 | - | - | - | |
| #22 | #C1:22 | - | - | - | |
| #23 | #C1:23 | - | - | - | |
| #24 | #C1:24 | - | - | - | |
| #25 | #C1:25 | - | - | - | |
| #26 | #C1:26 | - | - | - | |
| #27 | #C1:27 | Visual indicator, collision warning terminal C1:4, signal ground | U low >/Ulow | U low /Ulow | |
| #28 | #C1:28 | - | - | - | |
| #29 | #C1:29 | - | - | - | |
| #30 | #C1:30 | - | - | - | |
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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.