| DTC Strategy |
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- Poor connector connection
- Open or short to ground in circuit of valve
- Abnormal solenoid valve operation
- Faulty HECU
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| Enable Condition |
Case 1 |
- Ignition "ON"
- No related DTC is stored
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| Case 2 |
- Ignition "ON" and vehicle speed over 30km/h (19mph)
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| Case 3 |
- Ignition "ON" and vehicle speed over 15km/h (9mph) in case of brake lamp switch "ON"
- Ignition "ON" and vehicle speed over 6km/h (4mph) in case of brake lamp switch "OFF"
|
| Threshold Value |
Case 1 |
- Valve feedback monitoring
- Monitoring signal correlation between solenoid valve operating signal and feedback signal
- Monitors for 40ms on no valve control and for 60ms on valve control.
- If two signal is not matched consecutively, HECU remembers the moment and re-monitors after 60ms and fault is set if the same condition is detected.
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| Case 2 |
- Valve, pump motor relay and pump motor monitoring
- Monitors short in solenoid valve circuit by activating valve and pump motor in sequence. The valve fault is detected by monitoring valve feedback signal. At the same time pump motor is activated.
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| Case 3 |
- Monitors short in solenoid valve circuit and abnormal operation of solenoid valve by activating valve in sequence. The valve fault is detected by monitoring valve feedback signal.
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| Disable Condition |
- Ignition "OFF" and then "ON" and minimum vehicle speed over 30km/h (19mph)
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| Warning Lamp |
- EBD/ABS/ESC (ESP) Warning Indicator Lamp "ON"
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| Failsafe |
- ABS/ESC (ESP)/EBD function prohibited
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