Fuel-Cut Rpm

Connect a tachometer to engine (to monitor needle fluctuations). Start engine and warm to operating temperature. Disconnect throttle position sensor connector from throttle position sensor. Short terminals IDL and E1 (or E2) on wire side of connector. See Fig 1.
Gradually raise engine RPM. Fuel-cut operation can be checked by noting the fluctuation of tachometer needle. Fluctuation indicates fuel-cut system is being turned on and off. See Fig 2. Check that fuel-cut points and fuel return points are within specifications. See FUEL-CUT & FUEL RETURN RPM table.

Fig 1: Terminal Connectors For Testing Fuel-Cut RPM

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Fig 2: Needle Fluctuations When Testing Fuel-Cut RPM

FUEL-CUT & FUEL RETURN RPM

Model	Fuel-Cut Engine RPM	Fuel Return Engine RPM
3S-FE	1700	1300
3S-GE & 3S-GTE	2000	1600