Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
SRS Unit Connector For Inputs And Outputs (2018-19)
2015 Acura TLX Base, 2.4L EngSECTION SRS Unit Connector For Inputs And Outputs (2018-19)
| Connector Index |
|---|
| SRS unit connector A (39P) |
| SRS unit connector B (39P) |
SRS Unit Inputs and Outputs at Connector A (39P) (female terminals)
| Terminal Number | Terminal Name | Description |
|---|---|---|
| 1 | CDS | Collision detection signal output line |
| 2 | Not Used | - |
| 3 | Not Used | - |
| 4 | RA1- | Ground for the front passenger's airbag first inflator |
| 5 | RA1+ | Power source for the front passenger's airbag first inflator |
| 6 | RA2+ | Power source for the front passenger's airbag second inflator |
| 7 | RA2- | Ground for the front passenger's airbag second inflator |
| 8 | LA1- | Ground for the driver's airbag first inflator |
| 9 | LA1+ | Power source for the driver's airbag first inflator |
| 10 | LA2+ | Power source for the driver's airbag second inflator |
| 11 | LA2- | Ground for the driver's airbag second inflator |
| 12 | Not Used | - |
| 13 | Not Used | - |
| 14 | Not Used | - |
| 15 | Not Used | - |
| 16 | LKA- | Ground for the driver's knee airbag inflator |
| 17 | LKA+ | Power source for the driver's knee airbag inflator |
| 18 | Not Used | - |
| 19 | Not Used | - |
| 20 | Not Used | - |
| 21 | Not Used | - |
| 22 | Not Used | - |
| 23 | Not Used | - |
| 24 | Not Used | - |
| 25 | Not Used | - |
| 26 | Not Used | - |
| 27 | Not Used | - |
| 28 | OFF PTT | Sends and receives communication signal with the front passenger's airbag cutoff indicator |
| 29 | RFS+ | Power source for the right front impact sensor |
| 30 | RFS- | Ground for the right front impact sensor |
| 31 | LFS+ | Power source for the left front impact sensor |
| 32 | LFS- | Ground for the left front impact sensor |
| 33 | L-LINE | Additional communication line |
| 34 | F-CAN A_H *1 F-CAN_H *2 |
Sends and receives communication signal |
| 35 | F-CAN A_L *1 F-CAN_L *2 |
Sends and receives communication signal |
| 36 | GND | Ground circuit for the SRS unit |
| 37 | Not Used | - |
| 38 | Not Used | - |
| 39 | VB | SRS dedicated power (dedicated booster circuit) |
*1: V6 engine
*2: L4 engine
SRS Unit Inputs and Outputs at Connector B (39P) (female terminals)
| Terminal Number | Terminal Name | Description |
|---|---|---|
| 1 | Not Used | - |
| 2 | Not Used | - |
| 3 | RSA- | Ground for the right side airbag inflator |
| 4 | RSA+ | Power source for the right side airbag inflator |
| 5 | LSA+ | Power source for the left side airbag inflator |
| 6 | LSA- | Ground for the left side airbag inflator |
| 7 | RCA- | Ground for the right side curtain airbag first inflator |
| 8 | RCA+ | Power source for the right side curtain airbag first inflator |
| 9 | LCA+ | Power source for the left side curtain airbag first inflator |
| 10 | LCA- | Ground for the left side curtain airbag first inflator |
| 11 | SS+ | Driver's seat position sensor input line |
| 12 | Not Used | - |
| 13 | Not Used | - |
| 14 | Not Used | - |
| 15 | Not Used | - |
| 16 | Not Used | - |
| 17 | Not Used | - |
| 18 | RRP- | Ground for the front passenger's seat belt tensioner |
| 19 | RRP+ | Power source for the front passenger's seat belt tensioner |
| 20 | LRP+ | Power source for the driver's seat belt tensioner |
| 21 | LRP- | Ground for the driver's seat belt tensioner |
| 22 | Not Used | - |
| 23 | Not Used | - |
| 24 | Not Used | - |
| 25 | Not Used | - |
| 26 | SWS+ | Power source for the front passenger's weight sensors |
| 27 | FRBC | Front passenger's seat belt buckle switch input line |
| 28 | SWS- | Ground for the front passenger's weight sensors |
| 29 | FLBC | Driver's seat belt buckle switch input line |
| 30 | SWSS | Sends and receives communication signal with the front passenger's weight sensors |
| 31 | Not Used | - |
| 32 | Not Used | - |
| 33 | Not Used | - |
| 34 | SSS+ | Power source for the rear safing sensor |
| 35 | SSS- | Ground for the rear safing sensor |
| 36 | RS1+ | Power source for the right side impact sensor (first) and (second) |
| 37 | RS1- | Ground for the right side impact sensor (first) and (second) |
| 38 | LS1+ | Power source for the left side impact sensor (first) and (second) |
| 39 | LS1- | Ground for the left side impact sensor (first) and (second) |
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.