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Home >> Acura >> 2017 >> TLX Base, 2.4L Eng >> Repair and Diagnosis >> Restraints >> Air Bag, SRS >> Supplemental Restraint System - Testing & Troubleshooting >> Connector For Inputs And Outputs >> SRS Unit Connector For Inputs And Outputs (2015-17)
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SRS Unit Connector For Inputs And Outputs (2015-17)

Connector Index
SRS unit connector A (39P)
SRS unit connector B (39P)

SRS Unit Inputs and Outputs at Connector A (39P) 

GHH204257Courtesy of HONDA, U.S.A., INC.
Terminal Number Terminal Name Description
1* 3 CDS Collision detection signal output line
2 RA2+ Power source for the front passenger's airbag second inflator
3 RA2- Ground for the front passenger's airbag second inflator
4 LA2+ Power source for the driver's airbag second inflator
5 LA2- Ground for the driver's airbag second inflator
6 RA1+ Power source for the front passenger's airbag first inflator
7 RA1- Ground for the front passenger's airbag first inflator
8 LA1+ Power source for the driver's airbag first inflator
9 LA1- Ground for the driver's airbag first inflator
10 Not Used -
11 Not Used -
12 Not Used -
13 Not Used -
14 LKA+ Power source for the driver's knee airbag inflator
15 LKA- Ground for the driver's knee airbag inflator
16 Not Used -
17 OFF PTT Front passenger's airbag cutoff indicator output line
18 Not Used -
19 Not Used -
20 F-CAN_H* 1 Sends and receives communication signal
F-CAN A_H* 2
21 F-CAN_L* 1 Sends and receives communication signal
F-CAN A_L* 2
22 Not Used -
23 Not Used -
24 Not Used -
25 Not Used -
26 RFS+ Power source for the right front impact sensor
27 RFS- Ground for the right front impact sensor
28 LFS+ Power source for the left front impact sensor
29 LFS- Ground for the left front impact sensor
30 Not Used -
31 Not Used -
32 Not Used -
33 Not Used -
34 Not Used -
35 Not Used -
36 Not Used -
37 GND Ground circuit for the SRS unit (G308)
38 Not Used -
39 VB SRS dedicated power (dedicated booster circuit)

*1: L4 engine.

*2: V6 engine.

*3: With AcuraLink.

SRS Unit Inputs and Outputs at Connector B (39P) 

GHH204258Courtesy of HONDA, U.S.A., INC.
Terminal Number Terminal Name Description
1 LCA+ Power source for the left side curtain airbag inflator
2 LCA- Ground for the left side curtain airbag inflator
3 RSA+ Power source for the front passenger's side airbag inflator
4 RSA- Ground for the front passenger's side airbag inflator
5 LSA+ Power source for the driver's side airbag inflator
6 LSA- Ground for the driver's side airbag inflator
7 Not Used -
8 Not Used -
9 Not Used -
10 Not Used -
11 ODS Sends and receives communication signal with the front passenger's weight sensor unit
12 RCA+ Power source for the right side curtain airbag inflator
13 RCA- Ground for the right side curtain airbag inflator
14 Not Used -
15 Not Used -
16 FRBC Front passenger's seat belt buckle switch input line
17 Not Used -
18 FLBC Driver's seat belt buckle switch input line
19 Not Used -
20 Not Used -
21 Not Used -
22 RRP+ Power source for the front passenger's seat belt tensioner
23 RRP- Ground for the front passenger's seat belt tensioner
24 LRP+ Power source for the driver's seat belt tensioner
25 LRP- Ground for the driver's seat belt tensioner
26 RS1+ Power source for the right side impact sensor (first), right side impact sensor (second)
27 RS1- Ground for the right side impact sensor (first), right side impact sensor (second)
28 LS1+ Power source for the left side impact sensor (first), left side impact sensor (second)
29 LS1- Ground for the left side impact sensor (first), left side impact sensor (second)
30 Not Used -
31 Not Used -
32 Not Used -
33 Not Used -
34 Not Used -
35 Not Used -
36 Not Used -
37 SS+ Driver's seat position sensor input line
38 SSS+ Power source for the rear safing sensor
39 SSS- Ground for the rear safing sensor