Throttle Body: Testing and Inspection

a. Check for operating sound.
1. Turn the ignition switch ON.
2. When turning the accelerator pedal position sensor lever, listen to a running sound of the motor. Also, check that there is no friction sound.

If operation is not as specified, check the throttle control motor, wiring and ECM.

b. Inspect the throttle position sensor.
1. Connect the hand-held tester to the DLC3.
2. Turn the ignition switch ON.
3. When turning the accelerator pedal position sensor lever to the full-open position, check that the throttle valve opening percentage (THROTTLE POS) of the CURRENT DATA.

Standard throttle valve opening percentage: 60 % or more

If operation is not as specified, check that the accelerator pedal position sensor, the wiring and the ECM.

If you do not have the hand-held tester, measure voltage between the terminals (VTA1 - E2, VTA2 - E2) of the ECM connector.

c. Inspect the air assist system.
1. Start the engine and check that the MIL does not light up.
2. Let the engine warm up to the normal operating temperature.
3. Switch the A/C compressor from ON to OFF, and check the idle speed.

Idle speed (Transmission in neutral): 700 ± 50 rpm

NOTE: Perform inspection under condition without electrical load.

d. After checking the above (b) to (d), perform the driving test.