Inspection Procedure

WARNING: This page is about a different car, the 2007 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.
The throttle actuator current (THROTTLE MOT) and the throttle actuator duty ratio (THROTTLE OPN / THROTTLE CLS) can be read using the intelligent tester. However, the ECM shuts off the throttle actuator current when the ETCS malfunctions.

INSPECT THROTTLE BODY (RESISTANCE OF THROTTLE ACTUATOR)

Disconnect the T16 throttle body connector.
Measure the resistance of the throttle actuator.

Standard resistance

TESTER CONNECTION SPECIFIED CONDITION CHART

Tester Connection	Specified Condition
2(M+) - 1(M-)	0.3 to 100Ω at 20°C(68°F)

NG: REPLACE THROTTLE BODY

Fig 1: Inspecting Throttle Body (Resistance Of Throttle Actuator)

OK: GO TO Next Step

CHECK HARNESS AND CONNECTOR (THROTTLE ACTUATOR - ECM)
1. Check harness and connector (see ELECTRONIC CIRCUIT INSPECTION PROCEDURE ).
NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: GO TO Next Step
INSPECT THROTTLE BODY (VISUALLY CHECK THROTTLE VALVE)
1. Check between the throttle valve and the housing for foreign objects. Also check if the valve can open and close smoothly.
OK: The throttle valve is not contaminated by foreign objects and can move smoothly.

NG: REMOVE FOREIGN OBJECT AND CLEAN THROTTLE BODY

OK: REPLACE ECM