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Toyota Corolla Repair Manual: Definition of terms

Term

Definition

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

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 malfunctions.
Frequency of operation The number of times that the ecm checks for malfunctions 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 during a single driving cycle.

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 a malfunction and set a dtc.
Mil operation Mil illumination timing after a defect is detected.

Immediately means that the ecm illuminates mil the instant the ecm determines that there is a malfunction.

2 Driving cycle means that the ecm illuminates mil if the same malfunction is detected again in the 2 nd driving cycle.

Data list/active test
1. Data list Hint: according to the data list displayed by the obd ii scan tool or handheld tester, you can read the value of the switch, sensor, actuator and so on without parts removal. Readin ...

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

Other materials:

Calling the message sender
Calls can be made to an e-mail/SMS/MMS message sender's phone number. 1 Display the Message Inbox screen. 2 Select the desired message. 3 Select . 4 Check that the Call screen is displayed. ■ Calling from a number within a message Calls can be made to a number identified in a me ...

With parking assistant and Steptronic transmission: emergency braking function, Active PDC
Concept The emergency braking function of PDC initiates an emergency braking in case of acute risk of collision. General information Due to system limits, a collision cannot be prevented under all circumstances. The function is available below walking speed when driving in reverse or rolling backwar ...

Replacement
Hint: installation is in the reverse order of the removal. But the installation is indicated only when it has a point. 1. Remove rear door opening trim rh 2. Remove rear door opening trim lh 3. Remove rear seat cushion assembly ( or 728) 4. Remove rear seat back assy (fixed type rear seat) ...

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