B1135 (blink 24) on Toyota Corolla E120: Harf Connection in Airbag Sensor Assembly
Short answer: B1135 means “Harf Connection in Airbag Sensor Assembly”. The car’s computer has found a fault in the SRS system and turns on the SRS airbag warning. First check: workshop check order (RM821E): CHECK AIRBAG SENSOR ASSEMBLY CONNECTOR -> CHECK AIR BAG SENSOR ASSY CENTER -> INSPECT DISCONNECTION DETECTION PIN IN THE AIRBAG SENSOR.
- Code
- B1135 · blink 24
- System
- SRS
- Dashboard light
- SRS airbag warning
- Applies to
- Cars with airbags (SRS)
- Confidence
- high (official Toyota RM821E)
- Source
- toyotamanuals.gitlab.io
Symptoms and when it is set
- S Malfunction of electrical connection check mechanism of airbag sensor assembly connector S Airbag sensor assembly malfunction
Likely causes
- Electrical connection check mechanism; Airbag sensor assembly
What to check, in order
- Workshop check order (RM821E): CHECK AIRBAG SENSOR ASSEMBLY CONNECTOR -> CHECK AIR BAG SENSOR ASSY CENTER -> INSPECT DISCONNECTION DETECTION PIN IN THE AIRBAG SENSOR
Related on this car
Clearing the code does not fix the fault. If it comes back, the problem is still there. For brakes, airbags and steering, see a trained mechanic.

