The skid control ECU outputs a signal that is proportional to vehicle speed. This signal is based on the rotation of the ABS wheel speed sensors. After this, the signal is converted into a more precise rectangular waveform by the waveform shaping circuit inside the combination meter. It is then transmitted to the ECM. The ECM determines the vehicle speed based on the frequency of this signal.

ECD System 2AD-FHV 2ad-fhv Engine unit Disassembly Engine unit 2AD-FHV Inspection Engine unit 2AD-FHV Replacement

DTC    P0087    Fuel Rail / System Pressure - Too Low DTC    P0190    Fuel Rail Pressure Sensor Circuit DTC    P0192    Fuel Rail Pressure Sensor Circuit Low Input DTC    P0193    Fuel Rail Pressure Sensor Circuit High Input

To detect atmospheric pressure, the atmospheric pressure sensor built into the ECM is used in the common rail system. Following the changes in the atmospheric pressure, the ECM corrects the fuel injection volume, timing and duration, and adjusts the common rail internal fuel pressure for optimizing combustion.

DTC P0045 Turbocharger / Supercharger Boost Control Solenoid Circuit / Open

DTC    P0031    Oxygen (A/F) Sensor Heater Control Circuit Low (Bank 1 Sensor 1) DTC    P0032    Oxygen (A/F) Sensor Heater Control Circuit High (Bank 1 Sensor 1)

HINT: Parameters listed in the chart may be different from your readings depending on the type of instruments and other factors. If any DTCs are displayed during a check mode, check the circuit for the DTCs listed in the chart below. For details of each DTC, refer to the page indicated.