| Main action |
- Monitor the valve relay voltage
|
- Open or short in power supply circuit (IGN+)
- Defected ESP (ESC)
- Blown fuse
- Faulty Battery
|
| Threshold value |
Case 1 |
- A Fault is detected if valve relay voltage does not go up to 80% of supply voltage within 80 milliseconds after valve relay 'ON'
- If the valve relay drive element detects the following fault after the valve relay is "ON"
- Voltage difference between Drain and Source of valve relay FET is greater than (1.0±0.4) V
- When leakage current of 3.0 ± 1 mA is detected at the initial operation of valve relay
|
| Case 2 |
- A Fault is detected when valve relay voltage does not drop below 80% of the supply voltage within 80 milliseconds after valve relay 'ON' to 'OFF'
- Fault detection time: Once during initialization after ignition switch "ON"
- ABS/ESC warning lamp on when detecting the above fault
|
| Case 3 |
- A Fault is detected when valve relay voltage is lower than 7V±0.5 for more than 500 milliseconds after valve relay 'ON'
- Voltage difference between Drain and Source of valve relay (FET) is greater than (1.0±0.4) V for 500 milliseconds
|
| MIL |
| Reset condition |