Fuel Cut System (1.6L 4A-FE)

WARNING: This page is about a different car, the 1993 Toyota Celica. However, it is still accessible from the selected car via links, so may be relevant.

Install tachometer. Ensure tachometer is connected to proper terminals. See IDLE SPEED & MIXTURE in ADJUSTMENTS article.
CAUTION: Some tachometers may not be compatible with ignition system. Consult tachometer manufacturer before connecting tachometer to system. To avoid possible damage to ignitor and/or coil, DO NOT allow tachometer terminal to become grounded.
Disconnect electrical connector from throttle position sensor. Install jumper wire between IDL and E2 terminals on wiring harness side. See Fig 1.
Start engine and warm to normal operating temperature. Ensure all accessories are off. Gradually increase engine RPM. Note fluctuation in tachometer reading to indicate fuel cut RPM and fuel return RPM. See Fig 2.
Ensure fuel cut and fuel return RPM are within specification. See FUEL CUT SYSTEM SPECIFICATIONS table. Shut engine off. Disconnect tachometer. Reinstall electrical connector on throttle position sensor.

Fig 1: Throttle Position Sensor Connector Terminal ID (1.6L 4A-FE)

Fig 2: Needle Fluctuations For Fuel Cut System RPM Test (1.6L 4A FE)