Signal Specification

Fig 1: Identifying 10-Pin Connector

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All the values given below are between the respective terminal in column 1 and terminal #C4 (ground) unless otherwise stated in brackets after the table entry.

General

UI_low , voltage close to 0 V.

UI_bat , battery voltage.

NOTE:

It is important to connect the breakout box and check ground terminals before reading off.

Terminal in the breakout box	Control module terminal	Signal type	Ignition on
#1	D1	Power supply	U_bat
#2	D2	Horn	U_bat
#3	D3	LIN	U_l
#4	D4	Ground (SWS)	U_low
#5	D5	Ground (signal horn)	U_low

Connector C

Fig 2: Identifying Connector C Terminal Locations

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Connector C

Terminal in the breakout box	Control module terminal	Signal type	Ignition on	Miscellaneous
#1	C1	30-supply (power supply from battery)	U_low
#2	C2	Horn	U_bat	6-7V upon activation
#3	C3	Empty
#4	C4	Ground	U_low
#5	C5	LIN	U_low	via ICM
#6	C6	Empty
#7	C7	Headlamps	U_low	-
#8	C8	CAN H	Digital signal
#9	C9	CAN H	Digital signal
#10	C10	Empty

Connector AB

Fig 3: Identifying Connector AB Terminal Locations

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WARNING:

Never take a reading using an ohmmeter or other measuring instrument on a connector for a pyrotechnical airbag. This could deploy the airbag

Terminal in the breakout box	Control module terminal	Signal type
#	AB1	Airbag 30%
#	AB2	Airbag 30%
#	AB3	Airbag 70%
#	AB4	Airbag 70%