Abstract: A method and system of over the air (OTA) reprogramming of a systems of a vehicle performed by an OTA reprogramming device are provided. For example, the method includes determining whether a vehicle ignition is on or off. When the vehicle ignition is on, the method includes sending a classic controller area network (CAN) message comprising information to operate a transmission control unit (TCU), and using the classic CAN message to operate the TCU. When the vehicle ignition is off, the method includes sending a CAN flexible-data (FD) message comprising information to reprogram the TCU, and using the CAN FD message to reprogram the TCU. The method waits until an ignition of the vehicle is off to reprogram the TCU to avoid incompatibilities with a CAN FD message.

Abstract: A method and system of over the air (OTA) reprogramming of a systems of a vehicle performed by an OTA reprogramming device are provided. For example, the method includes determining whether a vehicle ignition is on or off. When the vehicle ignition is on, the method includes sending a classic controller area network (CAN) message comprising information to operate a transmission control unit (TCU), and using the classic CAN message to operate the TCU. When the vehicle ignition is off, the method includes sending a CAN flexible-data (FD) message comprising information to reprogram the TCU, and using the CAN FD message to reprogram the TCU. The method waits until an ignition of the vehicle is off to reprogram the TCU to avoid incompatibilities with a CAN FD message.

Abstract: An engine electronic control unit (ECU) for a vehicle includes a non-volatile memory and a microcontroller. The non-volatile memory is configured to store an indicator of ignition status having an initial off-status. The microcontroller is coupled to the non-volatile memory and is configured to receive a SOC of a battery for the engine ECU. The microcontroller is further configured to determine the SOC is insufficient to power-up the engine ECU following a reset condition. The microcontroller is further configured to disable over-writing the indicator of ignition status in response to determining the SOC is insufficient.

Abstract: Embodiments for crankshaft tooth sensing for a crank pulse wheel are provided. In some embodiments, a method includes identifying a first tooth characteristic of a tooth of a plurality of teeth on the crank pulse wheel. The first tooth characteristic is identified by a first sensor element. The method also includes identifying a second tooth characteristic of the tooth with a second sensor element. The method further includes identifying a tooth type for the tooth based on the first tooth characteristic and the second tooth characteristic. The method includes identifying a sliding buffer for a set of N teeth of the plurality of teeth on the crank pulse wheel. The method yet further includes calculating a buffer value for the sliding buffer corresponding to the N set of teeth represented in the sliding buffer. The angular position of the crank pulse wheel is determined based on the buffer value.

Abstract: An engine electronic control unit (ECU) for a vehicle includes a non-volatile memory and a microcontroller. The non-volatile memory is configured to store an indicator of ignition status having an initial off-status. The microcontroller is coupled to the non-volatile memory and is configured to receive a SOC of a battery for the engine ECU. The microcontroller is further configured to determine the SOC is insufficient to power-up the engine ECU following a reset condition. The microcontroller is further configured to disable over-writing the indicator of ignition status in response to determining the SOC is insufficient.

Abstract: Embodiments for crankshaft tooth sensing for a crank pulse wheel are provided. In some embodiments, a method includes identifying a first tooth characteristic of a tooth of a plurality of teeth on the crank pulse wheel. The first tooth characteristic is identified by a first sensor element. The method also includes identifying a second tooth characteristic of the tooth with a second sensor element. The method further includes identifying a tooth type for the tooth based on the first tooth characteristic and the second tooth characteristic. The method includes identifying a sliding buffer for a set of N teeth of the plurality of teeth on the crank pulse wheel. The method yet further includes calculating a buffer value for the sliding buffer corresponding to the N set of teeth represented in the sliding buffer. The angular position of the crank pulse wheel is determined based on the buffer value.

Abstract: A solenoid drive device includes a first solenoid drive circuit, a second solenoid drive circuit, a selection circuit, and circuitry. The circuitry controls the first switching element and the second switching element with a duty control in a control cycle according to acquired values of the first drive current and the second drive current so that a first on/off switching direction of the first switching element at a start timing of the control cycle is opposite to a second on/off switching direction of the second switching element at the start timing. The circuitry determines whether a failure in at least one of the selector, the first solenoid drive circuit, and the second solenoid drive circuit occurs based on a change in the selection detection signal in a period during which an on/off state of the first switching element is different form an on/off state of the second switching element.

Abstract: A startup control device controls a starter motor. The startup control device includes lock determination circuitry and motor control circuitry. The lock determination circuitry estimates a current value supplied to the starter motor based on a temperature of a battery, a remaining electricity amount in the battery, and an output voltage of the battery when the battery supplies electricity to the starter motor, determines a threshold period of time according to the current value estimated, and determines that an internal combustion engine does not start if a rotational speed of the internal combustion engine does not exceed a referenced speed within the threshold period of time after starting supplying electricity to the starter motor. The motor control circuitry stops supplying electricity to the starter motor when the lock determination circuitry determines that the internal combustion engine does not start after starting supplying electricity to the starter motor.

Abstract: A startup control device controls a starter motor. The startup control device includes lock determination circuitry and motor control circuitry. The lock determination circuitry estimates a current value supplied to the starter motor based on a temperature of a battery, a remaining electricity amount in the battery, and an output voltage of the battery when the battery supplies electricity to the starter motor, determines a threshold period of time according to the current value estimated, and determines that an internal combustion engine does not start if a rotational speed of the internal combustion engine does not exceed a referenced speed within the threshold period of time after starting supplying electricity to the starter motor. The motor control circuitry stops supplying electricity to the starter motor when the lock determination circuitry determines that the internal combustion engine does not start after starting supplying electricity to the starter motor.

Abstract: A solenoid drive device includes a first solenoid drive circuit, a second solenoid drive circuit, a selection circuit, and circuitry. The circuitry controls the first switching element and the second switching element with a duty control in a control cycle according to acquired values of the first drive current and the second drive current so that a first on/off switching direction of the first switching element at a start timing of the control cycle is opposite to a second on/off switching direction of the second switching element at the start timing. The circuitry determines whether a failure in at least one of the selector, the first solenoid drive circuit, and the second solenoid drive circuit occurs based on a change in the selection detection signal in a period during which an on/off state of the first switching element is different form an on/off state of the second switching element.