Throttle Body On-Vehicle Inspection - Lexus 2005 IS300 User Manual

SF-32
2005 LEXUS IS300 (RM1140U)
SFI
THROTTLE BODY
ON-VEHICLE INSPECTION
1. REMOVE ENGINE COVER
Remove the 4 nuts and engine cover.
2. INSPECT SYSTEM OPERATION
(a) Check that the throttle linkage moves smoothly.
B09506
(b) Inspect the throttle control motor for operating sound.
(1)
(2)
If operation is not as specified, check the throttle control motor,
wiring and ECM.
B01608
(c) Inspect the throttle position sensor and accelerator pedal
position sensor function.
Hand- held
(1)
Tester
(2)
(3)
Throttle valve opening percentage: 60 % or more
If operation is not as specified, check that the throttle position
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sensor, accelerator pedal position sensor, wiring and ECM.
(d) Start the engine, and check that the Malfunction Indicator
Lamp (MIL) does not light up.
(e) Inspect the air assist system.
(1)
- THROTTLE BODY
Turn the ignition switch ON.
When turning the accelerator pedal position sensor
lever, check the running sound of the motor. Also,
check that there is no friction sound.
Connect the hand-held tester to the DLC3.
When turning the accelerator pedal position sensor
lever to the full-open position.
Select the following menu, DIAGNOSIS / EN-
HANCED OBD ll / DATA LIST / THROTTLE POS.
Allow the engine to warm up to normal operating
temperature.
Author :
SF0NL-10
Date :
1413