Toyota Tacoma manuals

Toyota Corolla Repair Manual: 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.
Data list/active test
1. Data list Hint: using the data list displayed by the handheld tester or the obd ii scan tool, you can read the value of the switches, sensors, actuators and so on without parts removal. Readi ...

Toyota/lexus part and system name list
This reference list indicates the part names used in this manual along with their definitions. ...

Other materials:

Confirmation driving pattern
Connect the handheld tester or the obd ii scan tool to the dlc3.  record dtcs and the freeze frame data.  set the check mode using the handheld tester .  read the value on the misfire counter for each cylinder when idling. If the value is displayed on the misfire count ...

Safety information for children
Observe the following precautions when children are in the vehicle. Use a child restraint system appropriate for the child, until the child becomes large enough to properly wear the vehicles seat belt. ● It is recommended that children sit in the rear seats to avoid accidental contact w ...

Using the rear view monitor system
■ Screen description 1 Vehicle width guide lines The line indicates a guide path when the vehicle is being backed straight up. The displayed width is wider than the actual vehicle width. 2 Vehicle center guide lines These lines indicate the estimated vehicle center on the ground. 3 Dis ...

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