B0087critical severityBody
SRS Arming Sensor Circuit
on 2012 Toyota 4Runner 4.0L V6 · 4WD
What this code means
Malfunction in the SRS arming/safing sensor. The arming sensor provides a secondary confirmation before allowing airbag deployment.
Symptoms
- Airbag warning light on
- SRS fault stored
- Airbag deployment may be prevented even in a crash
Common causes
- Faulty arming sensor
- Wiring damage
- ACM internal fault
- Sensor connector issue
Diagnostic steps
- Scan SRS codes
- Locate arming sensor (usually in ACM or center console area)
- Check sensor wiring
- Measure sensor circuit
- Test ACM
Repair notes
Replace arming sensor or ACM if sensor is integrated. Professional service required.
Other Body codes on this vehicle
B0001
Driver Frontal Stage 1 Deployment Control
B0002
Driver Frontal Stage 2 Deployment Control
B0003
Passenger Frontal Stage 1 Deployment Control
B0004
Passenger Frontal Stage 2 Deployment Control
B0005
Driver Knee Airbag Deployment Circuit
B0006
Passenger Knee Airbag Deployment Circuit
B0007
Rear Left Side Airbag Deployment Circuit
B0008
Rear Right Side Airbag Deployment Circuit
B0010
Driver Side Airbag Deployment
B0011
Driver Side Airbag Deployment Circuit Open