Inspection Procedure

WARNING: This page is about a different car, the 2006 Toyota Land Cruiser. However, it is still accessible from the selected car via links, so may be relevant.

HINT:

Read freeze frame data using the intelligent tester. Freeze frame data records the engine conditions when malfunctions are 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.
This is the repair procedure of the throttle position sensor.

READ OTHER DTC OUTPUT (IN ADDITION TO DTC P0121)

Connect the intelligent tester to the CAN VIM. Then connect the CAN VIM to the DLC3.
Turn the ignition switch ON.
Enter the following menus: DIAGNOSIS / ENHANCED OBD II / DTC INFO / CURRENT CODES.

Read the DTCs.

Result

OTHER DTC OUTPUT (IN ADDITION TO DTC P0121)

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

HINT:

If any other codes besides P0121 are output, perform the troubleshooting for those codes first.

B: GO TO RELEVANT DTC TABLE

A: REPLACE THROTTLE BODY