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.
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 |
•
Ini(Start Up):100 ms (500μs x 20)
•
Steady:1s (10ms x 100) | |
De-Qualification |
•
Ini(Start Up):IGN off -> on
•
Steady:IGN off -> on | ||
