Throttle Body: Inspection

INSPECT THROTTLE BODY ASSEMBLY

Check the throttle valve.
1. Check that the throttle valve opens and closes smoothly.
2. Check that there is no sludge accumulating around the throttle body.
Fig 1: Locating Water By-Pass Hoses And Throttle Body Bolts
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Check the throttle control motor.

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 assembly.

Fig 2: Identifying Terminals Of Throttle Body Connector