On-Vehicle Inspection

WARNING: This page is about a different variant/trim than selected.

INSPECT INTAKE AIR CONTROL VALVE ASSEMBLY
1. Inspection procedure when using the Techstream.
  1. Warm up the engine.
  2. Stop the engine.
  3. Connect the Techstream to the DLC3.
  4. Turn the ignition switch to ON.
  5. Turn the Techstream ON.
  6. Enter the following menus: Powertrain / Engine and ECT / Active Test / Activate the VSV for Intake Control.
  7. Make sure that a clicking sound is heard from the intake air control valve when current flows. If the result is not as specified, replace the intake air surge tank.
    
    Fig 1: Identifying Intake Air Surge Tank
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Inspection procedure when applying voltage between the terminals.
  1. Disconnect the connector from the intake air control valve.
  2. Apply battery voltage between terminals 1 (-) and 2 (+) of the intake air control valve. Check that a clicking sound is heard from the intake air control valve.
    If the result is not as specified, replace the intake air surge tank.
    
    Fig 2: Applying Battery Voltage Between Terminals
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
INSPECT VACUUM SWITCHING VALVE
1. Perform the Active Test to operate the VSV (see AIR INTAKE CONTROL CIRCUIT ).
INSPECT AIR CLEANER ASSEMBLY
1. Inspect the actuator.
  1. Apply 80 kPa (600 mmHg, 23.6 in. Hg) of vacuum to the actuator. Check if the valve rotates open, as shown in the illustration.
  2. Apply the vacuum for 1 minute. The actuator should continue to keep the valve open.
    If the result is not as specified, replace the air cleaner case assembly.
    
    Fig 3: Applying Vacuum To Actuator
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Inspect the vacuum tank.
  1. Connect the vacuum pump to port A.
  2. Apply a vacuum of 66.7 kPa (500 mmHg, 20 in. Hg) to the vacuum tank.
  3. 1 minute after applying the vacuum, check that the pressure does not change.
3. Check that there is no ventilation when pressure is applied to port B, and that there is ventilation when a vacuum is applied to port B.
  If the result is not as specified, replace the air cleaner cap assembly.
  
  Fig 4: Connecting Vacuum Pump To Port A
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

INSPECT VACUUM SWITCHING VALVE

Check the resistance of the VSV.

Standard resistance

STANDARD RESISTANCE SPECIFICATION

Tester Connection	Specified Condition
1 - 2	37 to 44 Ω at 20°C (68°F)
1 - Body ground 2 - Body ground	10 kΩ or higher

If the result is not as specified, replace the VSV.

Fig 5: Checking Resistance Of VSV

Check VSV operation.
1. Check that air flows from port E to the filter.
  
  Fig 6: Checking Air Flows From Port E To Filter
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Apply battery voltage across the terminals. Check that air flows from port E to port F. If the result is not as specified, replace the VSV.
  
  Fig 7: Checking Air Flows From Port E To Port F
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002