Inspection Procedure

WARNING: This page is about a different car, the 2009 Toyota Tacoma. However, it is still accessible from the selected car via links, so may be relevant.

HINT:

Read freeze frame data using the Techstream. Freeze frame data records the engine conditions when a malfunction is detected. When troubleshooting, freeze frame data can help determine if the vehicle was running or stopped, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.

CHECK ANY OTHER DTC OUTPUT (IN ADDITION TO DTC P0121)

Connect the Techstream to the DLC3.
Turn the ignition switch to ON.
Turn the Techstream ON.
Enter the following menus: Powertrain/Engine and ECT/Trouble Codes.

Read DTCs.

Result

RESULT CHART

Display (DTC output)	Proceed to
P0121 and other DTCs	B
P0121	A

HINT:

If any DTCs other than P0121 are output, troubleshoot those DTCs first.

B: GO TO DTC CHART

A: REPLACE THROTTLE BODY (See REMOVAL )