2010 Lexus Truck RX 350 AWD V6-3.5L (2GR-FE) P Code Charts Page 2358

DESCRIPTION

The throttle actuator is operated by the ECM and opens and closes the throttle valve using gears.

The opening angle of the throttle valve is detected by the throttle position sensor, which is mounted on the throttle with motor body assembly. The

throttle position sensor provides feedback to the ECM. This feedback allows the ECM to appropriately control the throttle actuator and monitor the

throttle opening angle as the ECM responds to driver inputs.

HINT

This electronic throttle control system does not use a throttle cable.

MONITOR DESCRIPTION

The ECM monitors the electrical current through the electronic actuator, and detects malfunctions and open circuits in the throttle actuator based on

this value. If the current is outside the standard range, the ECM determines that there is a malfunction in the throttle actuator. In addition, if the

throttle valve does not function properly (for example, stuck on), the ECM determines that there is a malfunction. The ECM then illuminates the

MIL and stores a DTC.

Example:

- When the electrical current is below 0.5 A and the throttle actuator duty ratio exceeds 80%, the ECM interprets this as the current being

outside the standard range, illuminates the MIL and stores a DTC.

- If the malfunction is not repaired successfully, a DTC is stored when the engine is quickly revved to a high engine speed several times after the

engine has idled for 5 seconds after engine start.

MONITOR STRATEGY

TYPICAL ENABLING CONDITIONS