Denso Corporation

Hiroyuki Enomoto

Kokichi Shimizu

Shinichiro Oda

Keiichi Osawa

Akiyoshi Tsuchiya

Atsushi Hattori

Katsumi Takaba

Minoru Hozuka

Takeshi Suganuma

Yoshio Nakagaki

Takafumi Nishiseko

Kazunori Kurokawa

Yuichi Murase

Nobuyuki Kondo

Shinichi Sano

A driving mode setting part sets a driving mode when a vehicle travels by automatic driving. An item setting part sets a prioritized diagnosis. A storage part stores plural diagnosis conditions provided in correspondence to each diagnosis item. A target setting part sets a control target value. A motive power source part controls a motive power source based on the control target value. Each diagnosis item is assigned to the driving mode, for which the diagnosis condition is most easily satisfied. The item setting part sets, as a prioritized item, the diagnosis item assigned to the set driving mode. When the prioritized item is set, the target setting part sets the control target value so that the motive power source attains a state, which is close to the diagnosis condition of the prioritized item.

Electronic control unit

An electronic control device (ECU) reserves a transmission of a requested diagnosis data that is requested by a management center when an external device is connected to a dedicated connector, and when IGSW is turned ON. In such scheme, a delay of an off-board diagnosis process in the ECU is prevented when a diagnosis tool connected to the dedicated connector performs an off-board diagnosis. Further, after turning OFF of IGSW, the ECU, which is no longer due for a request from the external device connected to the dedicated connector, transmits the requested diagnosis data to the center, enabling the center to perform a remote diagnosis service. Therefore, the remote diagnosis service is performable when a commercially-available external device is connected to the dedicated connector by a user of a vehicle.

Electronic control device and electronic control system

An electronic control device (ECU) refrains from a transmission of a requested diagnosis data while IGSW is turned ON in case that an external device is connected to a dedicated connector. After turning OFF of IGSW, regardless of the connection of the external device to the connector, the transmission of the requested diagnosis data to the center is performed. As a result, a delay of an off-board diagnosis process in the ECU due to the transmission of the diagnosis data is prevented. Further, the data required for performing a remote diagnosis service is regularly transmitted to a management center. Therefore, the remote diagnosis service is performable when a commercially-available external device is connected to the dedicated connector by a user of a vehicle.

Vehicle electronic control device and system with off-board diagnostic function

An electronic control unit includes a threshold acquiring element, a behavior determining element and a storing element. The threshold acquiring element acquires a threshold for defining a determination condition. The threshold is set to correspond to a road condition on which a vehicle travels. The behavior determining element determines whether a vehicle behavior satisfies the determination condition defined by the threshold. The storing element stores predetermined operation data of the vehicle when the behavior determining element determines that the vehicle behavior satisfies the determination condition.

Electronic control unit for vehicle

A vehicle diagnosis system includes an electronic control unit, which executes a diagnosing process for determining whether any abnormality is present in a vehicle based on signals from vehicle devices. When any abnormality is detected, the electronic control unit stores in an EEPROM a diagnosis result indicative of the abnormality when a storage permission flag in the EEPROM is in the on-state. The storage permission flag is turned on from the off-state when receiving a storage permission command from an external unit. Thus, the storage of the diagnosis result into the EEPROM may be permitted at the time of transmitting the storage permission command externally to the ECU.

Electronic control system and method for vehicle diagnosis

In an electronic control system for a vehicle, an ECU performs diagnosis, and attaches a flag to abnormality data DTC upon detection of abnormality. The flag value is 0 or 1, when a specified condition is not satisfied and satisfied, respectively. When an ignition switch is turned off, the DTC with the attached flag is stored in an EEPROM. The flag value is switched in response to a specified condition that arises between completion of assembly of the ECU to a vehicle and use of the vehicle by a user. The specified condition is set to correspond to start of telematics service to the vehicle.

Electronic control system for vehicles

An electronic control unit performs self-diagnosis based on signals received from various sensors, and stores abnormality data in an EEPROM when abnormality is detected. The DTC is stored in a first memory area and a second memory area of the EEPROM, if a condition flag stored in the EEPROM is OFF and ON, respectively. The condition flag is switched from OFF (initial value) to ON, when service start data is received from a telematics service center in a period from the completion of assembling the electronic control unit to the vehicle to the start of use of the vehicle by a user.

Electronic control system for vehicle

An electronic control apparatus includes a control circuit and has a power supply holding function whereby when a power switch-off command is received by the apparatus, the supplying of power to the control circuit is continued until it has completed specific processing, during a power supply holding interval. The duration of each such interval is measured and stored in non-volatile memory, and subsequently used for detecting any power supply holding function abnormality, and for ensuring that the specific processing is actually performed, and distinguishing between an abnormality causing premature switch-off and an abnormality causing failure to terminate the supplying of power.

Electronic control apparatus which responds to shut-down command by executing specific processing prior to ceasing operation

In a vehicle diagnosis information communication system, electric power is supplied from a battery to a vehicle control computer mounted on the vehicle during a period of vehicle operation, while the electric power is supplied to a radio communication unit mounted on the vehicle irrespective of the vehicle operation. The computer transmits a vehicle information such as engine diagnosis result to the radio communication unit through a communication line. The radio communication unit communicates the received vehicle information to an external site of communication in response to a request of the information form the external site of communication irrespective of the supply of the electric power to the computer. Preferably, the supply of the electric power from the battery to the computer is maintained for a predetermined period after the vehicle operation.

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Kariya, Japan

Hiroyuki Enomoto