Circuit Description The accelerator pedal position (APP) module provides a voltage signal that changes relative to accelerator pedal position. There are three sensors located within the APP module that are scaled differently. Conditions for Running the DTC • The PCM performs this DTC diagnostic continuously. • The ignition switch in the ON position. Conditions for… Read More »
Circuit Description The PCM has the ability to put the vehicle in an ESO controlled idle if an engine overspeed condition has been detected. Conditions for Running the DTC The engine is operating. Conditions for Setting the DTC An RPM drop with 5 ESO cycles. Action Taken When the DTC Sets • ESO controlled idle… Read More »
Circuit Description Timing of the combustion event is accomplished by delivering a pulse of fuel into the combustion chamber at a desired degree of piston travel. This desired degree (desired timing), defines the current position of the piston in relationship of Top Dead Center. This test compares desired timing to measured timing when certain conditions… Read More »
Circuit Description The injection pump fuel supply line has a solenoid controlled shutoff located in the injection pump. When the solenoid is energized (key in the run position), the valve is open and fuel is supplied to the injection pump. By providing a ground path, the PCM energizes the solenoid. Conditions for Running the DTC… Read More »
Circuit Description The fuel temperature sensor is a thermistor that controls signal voltage to the PCM. When the fuel is cold, the sensor resistance is high, therefore the PCM will see high signal voltage. As the fuel warms, sensor resistance becomes less and voltage drops. The fuel temperature sensor is integrated with the optical sensor.… Read More »
Circuit Description The fuel temperature sensor is a thermistor that controls signal voltage to the PCM. When the fuel is cold, the sensor resistance is high, therefore the PCM will see high signal voltage. As fuel warms, sensor resistance becomes less and voltage drops. The fuel temperature sensor is integrated with the optical sensor. Conditions… Read More »
Circuit Description While the engine is warming, the PCM monitors the ECT sensor to determine how long it takes the engine to reach the coolant temperature required for Closed Loop operation. DTC P0126 will set if the PCM determines that the engine does not reach Closed Loop temperature in a specified amount of time. This… Read More »
Circuit Description The accelerator pedal position (APP) module provides a voltage signal that changes relative to accelerator pedal position. There are three sensors located within the APP module that are scaled differently. Conditions for Running the DTC • The PCM performs this DTC diagnostic continuously. • The ignition switch in the ON position. Conditions for… Read More »
Circuit Description The accelerator pedal position (APP) module provides a voltage signal that changes relative to accelerator pedal position. There are three sensors located within the APP module that are scaled differently. Conditions for Running the DTC • The PCM performs this DTC diagnostic continuously. • The ignition switch in the ON position. Conditions for… Read More »
Circuit Description The accelerator pedal position (APP) module provides a voltage signal that changes relative to accelerator pedal position. There are three sensors located within the APP module that are scaled differently. Conditions for Running the DTC • The PCM performs this DTC diagnostic continuously. • The ignition voltage is more than 6.4 volts. •… Read More »