Throttle Body: Inspection: Procedure

INSPECT THROTTLE BODY

Voltage Inspection

NOTE:

The inspection cannot be performed with this method correctly if there is a malfunction of the APP sensor or throttle valve actuator. Verify that no DTCs related to the APP sensor or throttle valve actuator are stored before the inspection.

HINT:

The TP sensor cannot be removed as a single unit. When replacing the TP sensor, replace it together with the throttle body as a single unit.

Connect the techstream to the DLC-2.
Switch the ignition ON (engine off).
Verify that the TP sensor output voltage (PID: TP1, TP2) varies according to the accelerator opening angle when the accelerator opening angle is gradually increased.
Refer to ON-BOARD DIAGNOSTIC TEST
- If verified, go to the next step.
- If not as verified, replace the throttle body.
  Refer to REMOVAL

Verify that the TP sensor output voltage (PID: TP1, TP2) is within the specification when the accelerator pedal is depressed and not depressed.

Refer to ON-BOARD DIAGNOSTIC TEST

Refer to INSPECTION

Specification (Reference)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

*a	High
*b	Output Voltage
*c	Low
*d	Sub Sensor (No. 2)
*e	Main Sensor (No. 1)
*f	Small
*g	Throttle Opening Angle
*h	Large

If not as specified, replace the throttle body.

Refer to REMOVAL

Resistance Inspection

Disconnect the negative battery cable.
Refer to REMOVAL
Disconnect the throttle body connector.

Measure the resistance between throttle body terminals 5 and 6.

Throttle body resistance

0.3 to 100 ohms (20°C (68°F))

If not as specified, replace the throttle body.

Refer to REMOVAL