Signals On Trailer Module (AHV) Connector (E9X)
| PIN | Description | Potential/to battery, negative terminal |
|---|---|---|
| 1A | - MOTOR+ | Connection to the engine/the ground for the engine does not pass through the control unit |
| 2A | KL30_B | +12 V/15 A fuse/switched KL30 |
| 3A | free | n.c |
| 4A | KL31 | GND |
| 5A | KL31 Pushbutton | Earthing to the button |
| 6A | Tester signal | Ground signal via button or relay for < 1s negative flank for start; (approx. 8V in non-actuated condition) |
| 7A | Sensor+ | Connection, limit position switch; (supply of limit position switch in drive; 12 V/20 mA) |
| 8A | free | n.c. |
| 9A | Sensor 1 | Connection of limit-position switch 1 from electric motor/high signal when unlocked/(approx. 8 V when unlocked) |
| 10A | Sensor 2 | Connection of limit-position switch 2 from electric motor (high signal when locked)/(approx. 8V once locked) |
| 11A | KL15 | Terminal 15 |
| 12A | Lights | Earthing signal (boot lid signal) |
| 13A | Alive signal | Alive signal to trailer module/if KL15 ON and system OK => pulsating signal (2.22 Hz, 50 ms ON and 400 ms OFF) |
| 14A | LED green | For monitoring, connection of an LED. Locked => lit (max. 20 mA) |
| 15A | LED red | For monitoring, connection of an LED. Unlocked => flashes at 2 Hz (max. 20 mA) |
| 16A | free | n.c. |
Signals on connector of electrically extendable towing hitch (E9x)