Toyota Corolla (E120): Definition of terms

Term

Definition
Monitor description Description of what the ecm monitors and how it detects malfunction (monitoring purpose and its details).
Related dtcs Diagnostic code
Typical enabling condition Preconditions that allow the ecm to detect malfunction.

With all preconditions satisfied, the ecm sets the dtc when the monitored value(s) exceeds the malfunction threshold(s).
Sequence of operation The priority order that is applied to monitoring, if multiple sensors and components are used to detect the malfunction.

While another sensor is being monitored, the next sensor or component will not be monitored until the previous monitoring has concluded.
Required sensor/components The sensors and components that are used by the ecm to detect malfunction.
Frequency of operation The number of times that the ecm checks for malfunction per driving cycle.
  • Once per driving cycle” means that the ecm detects malfunction only one time during a single driving cycle.
  • Continuous” means that the ecm detects malfunction every time when enabling condition is met.
Duration The minimum time that the ecm must sense a continuous deviation in the monitored value(s) before setting a dtc. This timing begins after the ”typical enabling conditions” are met.
Malfunction thresholds Beyond this value, the ecm will conclude that there is malfunction and set a dtc.
Mil operation Mil illumination timing after a defect is detected.
  • Immediately” means that the ecm illuminates the mil the instant the ecm determines that there is malfunction.
  • 2 Driving cycle” means that the ecm illuminates the mil if the same malfunction is detected again in the 2nd driving cycle.
    Share this page:

    Other materials:

    Front passenger occupant classification system
    Your vehicle is equipped with a front passenger occupant classification system. This system detects the conditions of the front passenger seat and activates or deactivates the devices for the front passenger. 1 SRS warning light 2 Seat belt reminder light 3 “AIR BAG OFF” indicator light ...

    Evap monitor (vacuum pressure monitor) (continued)
    Preconditions The monitor will not run unless: mil is off. Fuel level is approximately 1/2 to 3/4. Altitude is 7800 feet (2400 m) or less.* Engine coolant temperature (ect) is between 40°f and 95°f (4.4 °C and 35 °C). Intake air temperature (iat) is between 40°f and 95 ...

    Luggage door hinge torsion bar rh
    Replacement Hint: installation is in the reverse order of the removal. But the installation is indicated only when it has a point. In the lh side, work in the same procedure as in the rh side. Since the removal of the torsion bar will cause no tension, operation of opening and closi ...