Inflatable Restraint Sensing and Diagnostic Module (SDM), C1 Connector End Views

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		15357037 18-Way F Micro-Pack 100W Series (RED/YEL)
Pin	Wire Color	Circuit No.	Function
A1	YEL	1139	Ignition 1 Voltage
A2	-	-	Not Used
A3	WHT/BLK	1403	I/P Module - High Control
A4	-	-	Not Used
A5	DK BLU	1128	SDM Class 2 Serial Data
A6	WHT	347	Steering Wheel Module - High Control
A7	DK GRN	348	Steering Wheel Module - Low Control
A8	DK GRN/ WHT	1404	I/P Module - Low Control
A9-A17	-	-	Not Used
A18	BLK/WHT	1751	Ground