Method of recognizing trailer of tractor vehicle
First Claim
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1. A method of recognizing a trailer of a tractor vehicle by an electronic control unit (ECU), the method comprising steps of:
- determining whether a parking switch is in an on state, and a transmission gear state is a parking state;
determining whether a stop lamp switch of the trailer is in an on state, and a state of a current flowing in a stop lamp of the trailer to determine whether the stop lamp is in an on state when it is determined that the transmission gear state is not the parking state;
releasing a hold state of a diagnosis of whether the trailer is connected when the stop lamp switch of the trailer is in the on state and the stop lamp is in the on state;
recognizing a load current quantity of a load lamp and determining whether the stop lamp is in an open state; and
determining a mode as a trailer non-connection mode when the stop lamp is in an off state.
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Abstract
A method of recognizing a trailer of a tractor vehicle by an electronic control unit (ECU) includes determining whether a parking switch is in an on state and a transmission gear state is a parking state. Whether a stop lamp switch is in an on state and a state of a current flowing in the stop lamp of the trailer is in an on state are determined. A load current quantity of a load lamp is recognized, and whether the stop lamp is in an open state is determined. A mode to a trailer non-connection mode when the stop lamp is in an off state is determined.
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Citations
13 Claims
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1. A method of recognizing a trailer of a tractor vehicle by an electronic control unit (ECU), the method comprising steps of:
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determining whether a parking switch is in an on state, and a transmission gear state is a parking state; determining whether a stop lamp switch of the trailer is in an on state, and a state of a current flowing in a stop lamp of the trailer to determine whether the stop lamp is in an on state when it is determined that the transmission gear state is not the parking state; releasing a hold state of a diagnosis of whether the trailer is connected when the stop lamp switch of the trailer is in the on state and the stop lamp is in the on state; recognizing a load current quantity of a load lamp and determining whether the stop lamp is in an open state; and determining a mode as a trailer non-connection mode when the stop lamp is in an off state. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification