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Home >> Lexus >> 2002 >> SC 430 V8-4.3L (3UZ-FE) >> Repair and Diagnosis >> Powertrain Management >> Tune-up and Engine Performance Checks >> Idle Speed >> Testing and Inspection
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Idle Speed: Testing and Inspection

INSPECT ENGINE IDLE SPEED






a. When using LEXUS hand-held tester:
1. Connect a LEXUS handheld tester to the DLC3.
2. Please refer to the LEXUS hand-held tester operator's manual for further details.
3. Race the engine at 2,500 rpm for approximately 90 seconds.
4. Check the idle speed.
Idle speed (w/ Cooling fan OFF): 750 ± 50 rpm
5. Disconnect the LEXUS handheld tester from the DLC3.





b. When not using LEXUS hand-held tester:
1. Using SST, connect tachometer probe to terminal TAC of the DLC3.
SST 09843-18030
2. Please refer to the LEXUS hand-held tester operator's manual for further details. Race the engine at 2,500 rpm for approximately 90 seconds.
4. Check the idle speed.
Idle speed (w/ Cooling fan OFF): 750 ± 50 rpm
5. Remove the SST from the DLC3.
6. Disconnect the tachometer from the DLC3.

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