Ignition switch unit (20): Connection: Notes

IGNITION SWITCH UNIT CONNECTION DESCRIPTION

Pin no.	Signal type	Description
2	Communication cable	Communication with CIM. Key transponder code to CIM. Key position to CIM. SCL locking pin in unlocked and secured position to CIM. Release SCL locking pin, command from CIM. Brightness value for key positions from CIM.
3	+X	Signal and supply to engine control module TCS control module/EPS control module
4	Ground	Power supply
5	+30	Power supply
6	+B	Wake-up signal to CIM.
10	Locking pin is in unlocked and secured position.	Hall sensor value. Signal from SCL.
11	Release locking pin.	Signal to SCL.
12	+15	Signal and supply to All P-bus control modules. Airbag Underhood electrical center (UEC). Rear electrical center (REC). Fuse box in instrument panel.

Fig 1: Identifying Communication Flow - Ignition Switch Unit

Courtesy of SAAB-SCANIA OF AMERICA, INC.