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Home >> Acura >> 2021 >> RDX SH-AWD >> Repair and Diagnosis >> Restraints >> Air Bag, SRS >> Supplemental Restraint System - Service, Testing And Troubleshooting >> Connector View >> SRS Unit Connector for Inputs and Outputs

SRS Unit Connector for Inputs and Outputs

Connector Index
SRS unit connector A (43P)
SRS unit connector B (57P)

SRS Unit Connector A (43P) (female terminals) 

GHH556642Courtesy of HONDA, U.S.A., INC.
Terminal Number Terminal Name Description
1 CDS Collision detection signal output line
2 LA2- Ground for the driver's airbag second inflator
3 LA2+ Power source for the driver's airbag second inflator
4 RA1+ Power source for the front passenger's airbag first inflator
5 RA1- Ground for the front passenger's airbag first inflator
6 LA1- Ground for the driver's airbag first inflator
7 LA1+ Power source for the driver's airbag first inflator
8 RA3+ Power source for the front passenger's airbag active vent tether cutter
9 RA3- Ground for the front passenger's airbag active vent tether cutter
10 RA2+ Power source for the front passenger's airbag second inflator
11 RA2- Ground for the front passenger's airbag second inflator
12 RKA- Ground for the front passenger's knee airbag inflator
13 RKA+ Power source for the front passenger's knee airbag inflator
14 LKA+ Power source for the driver's knee airbag inflator
15 LKA- Ground for the driver's knee airbag inflator
16 F-CAN C_H Sends and receives communication signal
17 F-CAN C_L Sends and receives communication signal
18 L-LINE Sends and receives scan tool signal (serial data)
19 Not Used -
20 Not Used -
21 GND Ground circuit for the SRS unit
22 Not Used -
23 Not Used -
24 Not Used -
25 Not Used -
26 Not Used -
27 Not Used -
28 Not Used -
29 Not Used -
30 RFS+ Power source for the right front impact sensor
31 RFS- Ground for the right front impact sensor
32 LFS+ Power source for the left front impact sensor
33 LFS- Ground for the left front impact sensor
34 Not Used -
35 Not Used -
36 Not Used -
37 Not Used -
38 Not Used -
39 OFF_PTT Front passenger's airbag cutoff indicator output line
40 Not Used -
41 IG1_SRS SRS dedicated power (dedicated booster circuit)
42 Not Used -
43 Not Used -

SRS Unit Connector B (57P) (female terminals) 

GHH556643Courtesy of HONDA, U.S.A., INC.
Terminal Number Terminal Name Description
1 Not Used -
2 Not Used -
3 RCA- Ground for the right side curtain airbag inflator
4 RCA+ Power source for the right side curtain airbag inflator
5 Not Used -
6 Not Used -
7 Not Used -
8 Not Used -
9 LCA+ Power source for the left side curtain airbag inflator
10 LCA- Ground for the left side curtain airbag inflator
11 RSA- Ground for the front passenger's side airbag inflator
12 RSA+ Power source for the front passenger's side airbag inflator
13* 1 RRPT+ Power source for the right rear seat belt tensioner
14* 1 RRPT- Ground for the right rear seat belt tensioner
15* 1 LRPT- Ground for the left rear seat belt tensioner
16* 1 LRPT+ Power source for the left rear seat belt tensioner
17 RRP+ Power source for the front passenger's seat belt tensioner
18 RRP- Ground for the front passenger's seat belt tensioner
19 LRP- Ground for the driver's seat belt tensioner
20 LRP+ Power source for the driver's seat belt tensioner
21 Not Used -
22 Not Used -
23 Not Used -
24 SWS- Ground for the front passenger's weight sensors
25 Not Used -
26 Not Used -
27 LSA- Ground for the driver's side airbag inflator
28 LSA+ Power source for the driver's side airbag inflator
29 Not Used -
30 Not Used -
31 Not Used -
32 Not Used -
33 Not Used -
34 Not Used -
35 FRBC Front passenger's seat belt buckle switch input line
36 Not Used -
37 FLBC Driver's seat belt buckle switch input line
38* 1 RRBC Right rear seat belt buckle switch input line
39* 1 RCBC Center rear seat belt buckle switch input line
40* 1 RLBC Left rear seat belt buckle switch input line
41 SWSS Sends and receives communication signal with the front passenger's weight sensors
42 SPS Driver's seat position sensor input line
43 SWS+ Power source for the front passenger's weight sensors
44 RS2- Ground for the right side impact sensor (second)
45 RS2+ Power source for the right side impact sensor (second)
46 LS2- Ground for the left side impact sensor (second)
47 LS2+ Power source for the left side impact sensor (second)
48 Not Used -
49 Not Used -
50 Not Used -
51 Not Used -
52 Not Used -
53 Not Used -
54 RS1- Ground for the right side impact sensor (first)
55 RS1+ Power source for the right side impact sensor (first)
56 LS1- Ground for the left side impact sensor (first)
57 LS1+ Power source for the left side impact sensor (first)

*1:'22-23