Fail-Safe Control
The power window system switches to fail-safe control when a malfunction is detected in the encoder signal that detects UP/DOWN speed and direction of the power window motor. The power window system switches to fail-safe control when an error beyond the regulation value is detected between the fully closed position and the actual position of the power window motor.
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Malfunction |
Malfunction condition |
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Pulse sensor malfunction |
When only one side of pulse signal is being detected for more than the specified value. |
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Both pulse sensors malfunction |
When both pulse signals have not been detected for more than the specified value during glass open/close operation. |
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Pulse direction malfunction |
When the pulse signal that is detected during glass open/close operation detects the opposite condition of power window motor operating direction. |
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Glass recognition position malfunction 1 |
When there is an error between the glass fully closed position in the power window switch's memory and the actual fully closed position during glass open/close operation is more than the specified value. |
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Glass recognition position malfunction 2 |
When a pulse count more than the value of the glass full stroke during glass open/close operation. |
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Malfunction of not yet updated closed position of glass |
When glass open/close operation is continuously performed without fully closing more than the specified value (approximately 10 strokes). |
It changes condition before initialization and the following functions do not operate when switched to fail-safe control:
- Auto-up operation
- Anti-pinch function
- Retained power function
Perform initial operation to recover from fail-safe mode. However, the power window system switches back to fail-safe control when a malfunction is found in the power window switch or in the motor.