SID (541): Connection

Fig 1: Identifying Communication Flow - SID

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CONNECTOR PINOUTS REFERENCE

Pin No.	Signal type	Description
2	Ground	Grounding point G43
3	Wake-up signal	Wake-up lead from ICM pin 9.
5	+30 supply	From instrument panel main fuse box (22) pin 14 via fuse 14.
6	Signal input, alarm indicator light	If an alarm is fitted, pin 6 will be connected and alarm status will be indicated by the LED on SID.
9	Communication cable, bus (+)	Lead to ICM pin 8.
10	Communication cable, bus (-)	Lead to ICM pin 7.

Power supply and ground

Fig 2: Circuit Diagram - SID (Power Supply And Ground)

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Signal input, alarm indicator light

Fig 3: Circuit Diagram - SID (Signal Input, Alarm Indicator Light)

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Communication cables to ICM

Fig 4: Circuit Diagram - SID (Communication Cables To ICM)

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The lead for the wake-up signal is connected to pin 5 from ICM pin 9. ICM supplies the lead with 5V when SID is OFF and grounds the lead when SID is to be changed to ON.