Power supply, ground and bus communication
PIN DESCRIPTION
| Pin no. | Signal type | Description |
|---|---|---|
| - | O-bus (input) | sleeve 1 is the optical signal input |
| - | O-bus (output) | sleeve 2 is the optical signal output |
| 1 | I-bus | |
| 2 | I-bus | |
| 3 | P-bus (-) | |
| 4 | P-bus (+) | |
| 5 | P-bus (-) | |
| 6 | P-bus (+) | |
| 10 | Ground | Grounding point G43 |
| 20 | +30 supply | From instrument panel main fuse box (22) pin 14 via fuse 14. |
Power supply and ground
The control module can be woken up by
- Wake-up signal (12V) on I-bus
- Button press on SID control panel
- O-bus activated
The connectors are identical for all three control module variants. The fibre optic cables of the Obus are connected to two plastic sockets, where socket 1 receives and socket 2 transmits. The control module is connected to the P and I-buses.
ICM communicates with SID through a 2-wire communication cable and a wake-up signal of 5V.
ICM communicates with SIDC with PWM signals. ICM powers SIDC with 5V and has a lead for the wake-up signal (5V) and a lead for system ground.