Idle Speed: Testing and Inspection

INSPECTION
1. INITIAL CONDITIONS
a. Engine at normal operating temperature
b. Air cleaner installed
c. All pipes and hoses of air induction system connected
d. All vacuum lines properly connected
e. SFI system wiring connectors fully plugged
f. All operating accessories switched OFF
g. Ignition timing check correctly
h. Transmission in neutral position
i. Air conditioning switched OFF





2. When using LEXUS hand-held tester or OBDII scan tool:
CONNECT LEXUS HAND-HELD TESTER OR OBDII SCAN TOOL
a. Connect a LEXUS hand-held tester or OBDII scan tool to the DLC3.
b. Please refer to the LEXUS hand-held tester or OBDII scan tool operator's manual for further details.





3. When not using LEXUS hand-held tester or OBDII scan tool:
CONNECT TACHOMETER
Connect tachometer test probe to terminal IG(-) of the check connector.
4. INSPECT IDLE SPEED
a. Race the engine at 2,500 rpm for approximately 90 seconds.
b. Check the idle speed.
Idle speed (w/ Cooling fan OFF): 750 ± 50 rpm
If the idle speed is not as specified, check the air intake system.
5. When using LEXUS hand-held tester or OBDII scan tool:
DISCONNECT LEXUS HAND-HELD TESTER OR OBDII SCAN TOOL
6. When not using LEXUS hand-held tester or OBDII scan tool:
DISCONNECT TACHOMETER