Pressure-Side Impact Sensor and Rear Side Impact Sensor are installed in the left and the right side of front door and in the lower of C-pillar respectively.
The Pressure-Side Impact Sensor senses an impact based on an acceleration at crashing. Unlike the conventional acceleration sensor, the Pressure Sensor senses an air pressure by a distorted door at crashing and measures an impact.
The SCM detects the impact signals of the Pressure-Side Impact Sensor and Rear Side Impact Sensor and compares with signals of the safe sensor inside. If the signals of all sensors are judged as a collision, the side-airbag and the curtain-airbag would be unfolded.
At inspecting the pressure sensor, keep the door airtight for an exact measuring.
If you strike or spin the SRSCM at the IG "ON" state, the seat-belt pretensioner, curtain-airbag or side-airbag could be unfolded and bring on danger. Handle it with care.
The SRSCM sets DTC B1739 if there is any fault in Pressure-Side Impact(Driver) circuit.
Item | Detecting Condition | Possible cause | |
DTC Strategy |
•
Check Data |
•
Faulty Pressure-Side Impact(Driver) circuit.
•
Faulty Pressure-Side Impact(Driver).
•
Faulty SRSCM. | |
Enable Conditions |
•
Ignition "ON" | ||
Threshold Value |
•
Pressure-Side Impact send defect code
•
Pressure-Side Impact output is not expected value | ||
Diagnostic Time | Qualification |
•
More than 5s | |
De-Qualification |
•
More than 10s | ||
