Inflatable Restraint Sensing and Diagnostic Module (SDM) Connector End View

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		OEM: 15356922 Service: 88986456 42-Way F Micro-Pack 100 W (YE)
Pin	Wire Color	Circuit No.	Function
1	PK	739	Run/Crank Ignition 1 Voltage
2	TN/BK	371	Passenger I/P Module Disable Switch Signal
3	TN/WH	238	Left Seat Belt Switch Signal
4	PK	353	Passenger I/P Module Suppression Indicator Control
5	YE	1834	SIR Forward Sensor Signal (1)
6	YE	2160	SIR Forward Sensor Signal (2)
7	YE	2131	Left Front Side Impact Sensing Module Supply Voltage
8	TN	2133	Right Front Side Impact Sensing Module Supply Voltage
9	YE	3025	Passenger I/P Module Stage 1 High Control
10	OG	3024	Passenger I/P Module Stage 1 Low Control
11	PK	5057	Seat Position Switch Low Reference
12	BN	3020	Steering Wheel Module Stage 1 Low Control
13	TN	3021	Steering Wheel Module Stage 1 High Control
14	TN/WH	2135	Right Front Side Impact Module High Control
15	L-GN	2136	Right Front Side Impact Module Low Control
16	YE/BK	2138	Left Front Side Impact Module Low Control
17	BN	2137	Left Front Side Impact Module High Control
18-21	-	-	Not Used
22	D-BU	1128	SDM Class 2 Serial Data
23	-	-	Not Used
24	L-GN	5055	Left Seat Position Switch Signal
25	L-BU	5056	Right Seat Position Switch Signal
26	BK/WH	1851	Signal Ground
27	GY	2260	SIR Forward Sensor Low Reference
28	WH	2132	Left Front Side Impact Sensing Module Signal
29	D-GN	2134	Right Front Side Impact Sensing Module Signal
30	GY	3027	Passenger I/P Module Stage 2 High Control
31	PU	3026	Passenger I/P Module Stage 2 Low Control
32	BK/WH	1751	Signal Ground
33	PK	3022	Steering Wheel Module Stage 2 Low Control
34	WH	3023	Steering Wheel Module Stage 2 High Control
35	L-GN	2116	Right Seat Belt Pretensioner High Control
36	OG	2117	Right Seat Belt Pretensioner Low Control
37	OG/BK	2119	Left Seat Belt Pretensioner Low Control
38	TN/WH	2118	Left Seat Belt Pretensioner High Control
39-42	-	-	Not Used