PRECAUTION
- IGNITION SWITCH EXPRESSION HINT: The type of ignition switch used on this model differs depending on the specifications of the vehicle. The expressions listed in the table below are used in this section. Expression Ignition Switch (position) Engine Switch (Condition) Ignition Switch off LOCK Off (Lock) Ignition Switch ACC ACC On (ACC) Ignition Switch ON ON On (IG) Engine Start START On (Start)
Scheme 723
Scheme 724
Scheme 725
Scheme 726
Scheme 727
Scheme 728
Scheme 729
Scheme 730
Scheme 731
Scheme 732
- INSPECT INTAKE SYSTEM Check that there are no vacuum leaks at the points shown in the illustration.
- INSPECT INTAKE AIR CONTROL VALVE (for ACIS) Connect the Techstream to the DLC3. Start the engine and turn the Techstream on. Warm up the engine. Enter the following menus: Powertrain / Engine and ECT / Active Test / Activate the VSV for Intake Control. When "ACIS VSV" is turned on, check that the actuator rod operates. If the operation is not as specified, inspect the intake air control valve, vacuum tank and check valve.Refer to «INSPECTION»(/toyota/rav4/iv-2012-2015/remont/mechanical/#engine-intake-system-2ar-fe-service-information) . When "ACIS VSV" is turned off, check that the actuator rod returns to its original position. If the operation is not as specified, inspect the intake air control valve and vacuum hose.Refer to «INSPECTION»(/toyota/rav4/iv-2012-2015/remont/mechanical/#engine-intake-system-2ar-fe-service-information) .
- INSPECT INTAKE AIR CONTROL VALVE (for TCV) Remove the No. 1 engine cover sub-assembly.Refer to «REMOVAL - Step 2»(ref-493433-S34931423392012081000000). Connect the Techstream to the DLC3. Turn the ignition switch to ON (do not run the engine). Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Active Test / All Data / Intake Air Control Position. Set the duty ratio to 60% or -60% for 1 to 3 seconds, and then return the duty ratio to 0%. Check the value in the Data List. Specified Condition Condition (Active Test) Specified Condition (Data List) Control the IAC Duty Ratio set to 60% Intake Air Control Position 35° or more Control the IAC Duty Ratio set to -60% Intake Air Control Position 17° or less NOTE: Supply power to the intake control valve for 1 to 3 seconds. If power is supplied to the intake control valve for less than 1 second, the gear of the tumble control valve does not reach the stopper and the value in the Data List may be incorrect. If power is supplied to the intake control valve for more than 3 seconds, the motor may be damaged. Do not perform this inspection more than 2 times consecutively. HINT: The standard duty ratio for inspections is 60% or -60%. However, if the value in the Data List is not as specified, set the duty ratio to 100% or -100% for 1 to 3 seconds, and check the value in the Data List again. When the result is not as specified during the Active Test, perform the following procedures. Remove the intake manifold.Refer to «REMOVAL»(/toyota/rav4/iv-2012-2015/remont/mechanical/#engine-intake-system-2ar-fe-service-information). HINT: When the ignition switch is off, the tumble control valves are half open. NOTE: Apply battery voltage for 1 to 3 seconds. If battery voltage is applied for more than 3 seconds, the actuator may be damaged. Do not allow the lead wires to contact the other terminals. Check that the valves move when connecting the battery to the terminals of the intake air control valve actuator. Standard Tester Connection Specified Condition Positive battery voltage applied to terminal 4 (M-), and negative battery voltage applied to terminal 5 (M+) Open --> Closed Positive battery voltage applied to terminal 5 (M+), and negative battery voltage applied to terminal 4 (M-) Closed --> Open When the results are not as specified, perform the following inspections. HINT: Check that the valves are not cracked or deformed. Remove the intake air control actuator, and check that the valves move smoothly. If there are no problems with the valves, inspect the intake air control valve actuator.Refer to «INSPECTION»(/toyota/rav4/iv-2012-2015/remont/mechanical/#engine-intake-system-2ar-fe-service-information).
See also:
• INSPECTION