Toyota RAV4 manuals

Toyota RAV4 Service Manual: Definition of terms

Terms

Definition

Monitor description Description of what ecm monitors and how detects malfunctions (monitoring purpose and details).
Related dtcs Group of diagnostic trouble codes that are output by ecm based on same malfunction detection logic.
Typical enabling condition Preconditions that allow ecm to detect malfunctions.

With all preconditions satisfied, ecm sets dtc when monitored value(s) exceeds malfunction threshold(s).

Sequence of operation Order of monitor priority, applied if multiple sensors and components involved in single malfunction detection process.

Each sensor and component monitored in turn, when previous detection operation completed.

Required sensor/components Sensors and components used by ecm to detect each malfunction.
Frequency of operation Number of times ecm checks for each malfunction during each driving cycle.

"Once per driving cycle" means ecm only performs checks for that malfunction once during single driving cycle.

"Continuous" means ecm performs checks for that malfunction whenever enabling conditions met.

Duration Minimum time for which ecm must detect continuous deviation in monitored value(s) in order to set dtc. Timing begins when typical enabling conditions met.
Malfunction thresholds Value, beyond which, ecm determines malfunctions exist and sets dtcs.
Mil operation Timing of mil illumination after malfunction detected.

"Immediate" means ecm illuminates mil as soon as malfunction detected.

"2 Driving cycle" means ecm illuminates mil if same malfunction detected second time during next sequential driving cycle.

Precaution
Notice: Perform reset memory (at initialization) when replacing the automatic transmission assembly, engine assembly or ecm (see page ax-18). Perform registration (vin registration) when r ...

Parts location
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Other materials:

Inspection
Inspect oil pump assembly Turn the drive gear with 2 screwdrivers and make sure it rotates smoothly. Notice: Be careful not to damage the oil seal lip. Inspect clearance of oil pump assembly Push the driven gear to one side of the body. Using a feeler gauge, measur ...

Data list / active test
Read data list Hint: Using the intelligent tester's data list allows switch, sensor, actuator and other item values to be read without removing any parts. Reading the data list early in troubleshooting is one way to save time. Connect the intelligent tester to the dlc3. Turn the igni ...

Air conditioning control panel does not operate
Description This circuit consists of the air conditioning control and the air conditioning amplifier. When the air conditioning control is operated, signals are transmitted to the air conditioning amplifier through the lin communication system. If the lin communication system malfunctions, ...

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