| Case 1 |
Main action |
- Monitor Pump motor fuse open
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- Damaged or poor connector connection
- Defected ESP (ESC)
- Defected ESP (ESC) fuse
- Poor ESP (ESC) ground
- Excessive parking brake shoe gap
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| Threshold value |
- A failure is detected if Battery voltage is below 4V longer than 1 second.
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| Reset condition |
- Turn ignition switch off and back on.
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| Case 2 |
Main action |
- Monitor Motor circuit (open, short to battery)
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| Threshold value |
- A failure is detected if the motor relay voltage is above 4±0.5V longer than 500 msec during motor relay is off. (This monitoring works after motor relay is switched off longer than 1.8 sec.)
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| Reset condition |
- Turn ignition switch off and back on. And vehicle speed is faster than 30 km/h (80mi/h)
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| Case 3 |
Main action |
- Monitor Motor circuit (open, short to ground)
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| Threshold value |
- Motor relay voltage is below (Motor duty * 100/3-2.8V) 7 times while motor relay "ON".
- A failure is detected when the voltage difference between power side and load side of motor relay is greater than 1±0.5V 0.15V more than 100 msec while motor relay is on.
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| Reset condition |
- Turn ignition switch off and back on. And vehicle speed is faster than 30 km/h (80mi/h)
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| Case 4 |
Main action |
- Monitor Motor low side open (ground loss)
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| Threshold value |
- A failure is detected if VPGND is above 5V longer than 500 msec while motor relay is on.
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| Reset condition |
- Turn ignition switch off and back on.
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| Case 5 |
Main action |
- Monitor Motor lock (stuck)
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| Threshold value |
- If any following condition is monitored, controller drives motor maximum 3 times for test. A failure is detected if any following condition is satisfied continuously during test.
- VMR is below 0.5 ±0.1V within 20 msec after motor is off.
- The decreasing rate of VMR for 1 second is out of normal range after motor is off.
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| Reset condition |
- Turn ignition switch off and back on. And vehicle speed is faster than 30 km/h (80mi/h)
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| MIL |
- The ABS/ESP (ESC) warning lamps are activated.
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| Remarks |
- Buzzer can be on when the charged pressure is not enough.
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