3000GT VR-4 AWD V6-2972cc 3.0L DOHC MFI Twin Turbo (1998)
(4) Remove the waterproof female connector from the ignition timing adjusting connector (brown).
(5) Using a jumper wire, ground the ignition timing adjusting terminal.
(6) Start the engine and run at idle.
(7) Check the basic idle speed.
Basic idle speed: 700 ± 50 r/min
NOTE:
1. The engine speed may be low by 20 to 100 r/min while the vehicle is new [distance driven approx. 500 km (300 miles) or less], but no
adjustment is necessary.
2. If the engine stalls or speed is low despite a sufficient distance driven [approx. 500 km (300 miles) or more], it is probably due to deposits
on the throttle valve. In this case, clean the throttle valve. (Refer to P.13A-52.)
3. In the case of a DOHC engine, the tachometer should read 1/3 of the actual engine speed. This means that the actual engine speed is the
tachometer reading multiplied by 3.
(8) If the basic idle speed is out of specification, adjust by turning the engine speed adjusting screw.
NOTE: If the idle speed is higher than the standard value even with engine speed adjusting screw fully tightened, check to see if there is
evidence of the closed throttle position switch being moved. If the closed throttle position switch seems to have been moved, adjust it. If it
does not seem to have been moved, there may be a leak caused by deteriorated fast idle air valve (FIAV). In such a case, replace the throttle
body.
(9) Turn the ignition switch OFF.
(10) When the scan tool has not been used, remove the jumper wire from the diagnostic test mode control terminal.
(11) Remove the jumper wire from the ignition timing adjusting terminal and replace the connector back again.
(12) Start the engine again and run at idle for 10 minutes to make sure that the engine runs at proper idle speed.