DTC C1237 Pressure Sensor - Other: DTC Detecting Condition
DTC DETECTION CONDITION AND POSSIBLE CAUSE
| Item |
Detecting Condition |
Possible cause |
| DTC Strategy |
|
- Open or short of pressure sensor circuit
- Faulty pressure sensor
- Faulty HECU
|
| Detect Mode |
- Outside the ABS control cycle
- Diagnosis mode
- Failure mode
|
| Enable Conditions |
- If input signal is noisy, Which the gradient of the sensor signal is larger than 15bar over 25times in 2sec, ECU detect the failure.
- Outside an ABS/ESC control, after normal operation of BLS, If the pressure sensor signal is higher than 20bar and BLS is low for 3sec, ECU detect the failure.
|
| Fail Safe |
- Inhibit the ESC control and allow the ABS/EBD control. Meanwhile, stop checking the ESC switch failure under the ESC control.
- The ESC warning lamps are activated.
|