Throttle Body: Inspection

WARNING: This page is about a different car, the 2008 Lexus IS F. However, it is still accessible from the selected car via links, so may be relevant.

INSPECT THROTTLE BODY ASSEMBLY

Check that the throttle valve opens and closes smoothly
Check that there is no carbon accumulated around the throttle plate.

Fig 1: Locating Throttle Body Assembly Hose And Throttle Plate
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Measure the resistance according to the value(s) in the table below.

Standard Resistance

TESTER CONNECTION SPECIFIED CONDITION CHART

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

If the result is not as specified, replace the throttle body.

Fig 2: Identifying Throttle Body Assembly Connector Terminal