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:

Inspection procedure
1 Check d squib circuit(airbag sensor assy center horn button assy) Disconnect the negative () terminal cable from the battery, and wait at least for 90 seconds.  disconnect the connectors between the horn button assy and the airbag sensor assy center.  for the black co ...

Brake
Onvehicle inspection 1. Inspect brake line pipes and hoses Hint: work in a welllighted area. Turn the front wheels fully to the right or left before begining.  check all the brake lines and hoses for: damage wear deformation cracks corrosion leaks bends twists ...

Disposal
1. Dispose shock absorber assy front lh  fully extend the shock absorber piston rod.  using a drill, make a hole in the cylinder as shown in the illustration to discharge the gas inside. Caution: when drilling, chips may fly out, work carefully. The gas is colorless, o ...

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