Abstract: A method for monitoring a vehicle battery includes running a timer while the vehicle and a controller are in off states. The method wakes the control module after a first time increment measured by the timer, and sets a second time increment. If needed, the method samples a first state of charge of the battery, and determines whether the battery requires charging prior to the second time increment based upon the sampled first state of charge. Determining whether the battery requires charging may include comparing the first state of charge to a threshold state of charge, or comparing to a second state of charge measured after the second time increment. A diagnostic message may be sent from the vehicle via a communications path, and, if the battery requires charging, an alert message sent to a receiving point accessible to vehicle operator.

Abstract: A diagnostic system for a vehicle comprises a humidity module and a fault diagnostic module. The humidity module outputs a first humidity value based on a humidity measurement of a humidity sensor of the vehicle and outputs a second humidity value based on humidity data from a data source that is external to the vehicle. The fault diagnostic module selectively diagnoses a fault in the humidity sensor based on the first humidity value and the second humidity value.

Abstract: An engine control system comprises a derivative module and a slip remediation module. The derivative module determines a mathematical derivative of a driven wheel speed of a vehicle. The slip remediation module, when the mathematical derivative is more negative than a predetermined deceleration, at least one of disables regenerative braking being performed by one or more electric motors, increases an axle torque request, and unlocks a torque converter.

Abstract: A control system for an engine includes a control module and a resistor. The resistor is connected in series between the control module and a non-contact position sensor. The control module selectively detects a fault of the non-contact position sensor based on a voltage drop across the resistor. A method for controlling an engine includes providing a resistor connected in series between a control module and a non-contact position sensor, and selectively detecting a fault of the non-contact position sensor based on a voltage drop across the resistor.

Abstract: A system includes a trailer sensing module, a position sensing module, a torque reducing module, and an override control module. The trailer sensing module senses when a trailer is attached to a vehicle. The position sensing module senses positions of an accelerator pedal and a brake pedal of the vehicle. The torque reducing module reduces torque output to wheels of the vehicle when both the accelerator pedal and the brake pedal are pressed. The override control module selectively deactivates the torque reducing module when the trailer is attached to the vehicle and when a speed of the vehicle is less than or equal to a threshold.

Abstract: A testing module includes a first input, a second input, an output, a decoder module, an analog to digital (A/D) converter, and an output generator module. The testing module receives a throttle position signal from a throttle position sensor of a vehicle at the first input. The decoder module generates a first throttle position based on a length of at least one pulse in the throttle position signal. The A/D converter generates a second throttle position based on the throttle position signal. The testing module receives user input at the second input. The output generator module generates a test signal in a single edge nibble transmission (SENT) format based on the user input and one of the first and second throttle positions. The testing module outputs the test signal to a control module of the vehicle at the output.

Abstract: A method of controlling an Extended Range Electric Vehicle (EREV) or a hybrid vehicle that includes an internal combustion engine (ICE) that is capable of automatically starting in response to a pre-defined event includes determining if the vehicle is within a pre-defined distance of a service station, determining if the ICE is running, determining if the vehicle is in an ignition on mode or in an ignition off mode, and automatically starting the ICE when the vehicle is within the pre-defined distance of the service station, the engine is not running and the ignition is in the ignition on mode to notify a service technician that the ICE is in the ignition on mode.

Abstract: A control module includes a predicted torque control module that determines a desired throttle area based on a transmission torque request and a desired predicted torque. A throttle security module determines a throttle limit based on the desired throttle area and the desired predicted torque and determines an adjusted desired throttle area based on the throttle limit. A throttle actuator module adjusts a throttle based on the adjusted desired throttle area.

Abstract: A throttle diagnostic system comprises a diagnostic device comprising a throttle sweep diagnostic module that generates N throttle position commands at a first predetermined interval, wherein the N throttle position commands differ by a predetermined interval. A vehicle control system comprises a throttle body assembly that receive the N throttle position commands and a throttle diagnostic module that performs diagnostics on the throttle body assembly at a second predetermined interval that is less than the first predetermined interval.

Abstract: An engine control system of a vehicle comprises a torque module and a chassis request evaluation module. The torque module controls a torque output of an engine based on a driver torque request and selectively increases the torque output based on a chassis torque request. The chassis request evaluation module selectively prevents the increase of the torque output based on at least one of a vehicle speed, a transmission state, and an accelerator pedal position.

Abstract: A control system includes an error module, a selection module, a control module, and a hysteresis module. The error module determines an error value based on a difference between a desired position and a measured position of one of a throttle valve and an exhaust gas recirculation (EGR) valve of a vehicle. The selection module sets a control value equal to one of the error value and zero based on a comparison of the error value and a hysteresis value. The control module generates a control signal based on the desired position and the control value and actuates the one of the throttle valve and the EGR valve using the control signal. The hysteresis module selectively varies the hysteresis value.

Abstract: A testing module includes a first input, a second input, an output, a decoder module, an analog to digital (A/D) converter, and an output generator module. The testing module receives a throttle position signal from a throttle position sensor of a vehicle at the first input. The decoder module generates a first throttle position based on a length of at least one pulse in the throttle position signal. The A/D converter generates a second throttle position based on the throttle position signal. The testing module receives user input at the second input. The output generator module generates a test signal in a single edge nibble transmission (SENT) format based on the user input and one of the first and second throttle positions. The testing module outputs the test signal to a control module of the vehicle at the output.

Abstract: A system comprises a general-purpose memory, a lockable memory, a memory management unit, and a processor. The general-purpose memory includes data for a first set of addresses. The lockable memory includes data for a second set of addresses. The memory management unit selectively writes data to one of the general-purpose memory and the lockable memory and selectively locks the lockable memory by preventing writes to the lockable memory. The processor instructs the memory management unit to unlock the lockable memory before requesting a write to one of the second set of addresses.

Abstract: A control system for a vehicle brake comprises a compensation module that determines a compensated brake value based on a vehicle mass and at least one of a pedal force and a pedal displacement, and a brake control module that selectively adjusts a fluid pressure supplied to the vehicle brake based on the compensated brake value. The compensation module determines the compensated brake value based on a comparison of the vehicle mass and a predetermined mass value. A related method for controlling the vehicle brake based on vehicle mass is also provided.

Abstract: A system includes a trailer sensing module, a position sensing module, a torque reducing module, and an override control module. The trailer sensing module senses when a trailer is attached to a vehicle. The position sensing module senses positions of an accelerator pedal and a brake pedal of the vehicle. The torque reducing module reduces torque output to wheels of the vehicle when both the accelerator pedal and the brake pedal are pressed. The override control module selectively deactivates the torque reducing module when the trailer is attached to the vehicle and when a speed of the vehicle is less than or equal to a threshold.

Abstract: A system for an engine with a turbocharger system includes a rate determination module, a limiting rate selection module, a throttle inlet absolute pressure (TIAP) calculation module, and a throttle control module. The rate determination module generates a pressure rate value based on a pressure difference between a current TIAP signal from a TIAP sensor and a previous TIAP signal. The limiting rate selection module selects a limiting rate based on the pressure rate value. The TIAP calculation module generates a calculated TIAP signal based on the limiting rate and the current TIAP signal. The throttle control module generates a throttle control signal based on the calculated TIAP signal and actuates an inlet throttle valve of the engine based on the throttle control signal.

Abstract: A battery charging system and method for charging a plug-in electric vehicle with power from an external power source, such as a standard 110 volt or 220 volt AC wall outlet. The method senses various internal and external conditions and uses this information to charge the plug-in electric vehicle in an optimum fashion that reduces charging time yet avoids damage to components of the charging system. In one embodiment, the battery charging system includes an external power source, a battery charger with sensors for monitoring the external power source and the charger, a battery unit with sensors for monitoring the battery, a battery charging control module for processing the information, and a user interface that allows user-specified custom charging constraints. All of these components, with the exception of external power source, may be located on the vehicle.

Abstract: An engine control system includes a coordinated torque control (CTC) module, a diagnostic module, and an actuator limiting module. The CTC module determines a first position for a throttle valve of a spark-ignition, internal combustion engine and controls opening of the throttle valve based on the first position. The diagnostic module selectively diagnoses an engine shutdown fault and disables the control of the opening of the throttle valve based on the first position when the engine shutdown fault is diagnosed. The actuator limiting module determines a second position for the throttle valve based on an accelerator pedal position, selects a lesser one of the first and second positions, and selectively limits the opening of the throttle valve to the lesser one of the first second positions when the engine shutdown fault is diagnosed.

Abstract: A control system comprising a powertrain relay diagnostic module that determines a single continuous period that a powertrain relay voltage is less than an ignition relay voltage, that compares the single continuous period to a single predetermined period, and that diagnoses a powertrain relay out of correlation (OOC) error when the single continuous period is greater than or equal to the single predetermined period, and an ignition relay diagnostic module that diagnoses an ignition relay OOC error when the ignition relay voltage is less than the powertrain relay voltage for a first predetermined cumulative period within a first predetermined total period.

Abstract: A control system for a vehicle includes an error detection module and a remedial control module. The error detection module detects whether an accelerator of the vehicle is stuck is based on vehicle speed, a position of the accelerator, and one of a pressure applied to a brake of the vehicle and a status of a parking brake of the vehicle. The remedial control module, when the accelerator is stuck, at least one of resets the position of the accelerator and decreases torque output of a powertrain system.