toyota Workshop Repair Guides

Toyota Workshop Service and Repair Manuals

On-Vehicle Inspection|Page 2858 > < Engine Controls - MIL ON/DTC P0300/Stall/Rough Idle|Page 2855
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Throttle Body: Testing and Inspection
On-Vehicle Inspection

THROTTLE BODY 

ON-VEHICLE INSPECTION

1. INSPECT THROTTLE BODY

a. Check that the throttle linkage moves smoothly.

Port Locations E, P And R

Results Table

b. Check the vacuum at each port.

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Start the engine.

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Check the vacuum with your finger.

2. INSPECT THROTTLE POSITION SENSOR

a. Disconnect the sensor connector.
b. Disconnect the vacuum hose from the throttle opener.
c. Apply vacuum to the throttle opener.

On-Vehicle Inspection|Page 2858 > < Engine Controls - MIL ON/DTC P0300/Stall/Rough Idle|Page 2855