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All Other Models

Start engine and check that it idles properly. Pinch off hose to vacuum switch.
Gradually increase engine speed to 2000 RPM (Land Cruiser), 2300 RPM (Calif. Tercel primary), 2500 RPM (Corolla), or 3000 RPM (all other models). Engine should misfire slightly for last 500 RPM as speed is raised.

Fig 1: Deceleration Fuel Cut System (Calif. Tercel)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NOTE: Perform this procedure quickly to avoid overheating and damage to converter.
Release hose and raise engine speed, checking to see that engine runs smoothly.

Unplug wiring connector to solenoid valve. Engine should now idle roughly. If this responds as indicated, system is operating normally.

Fig 2: Deceleration Fuel Cut System (All Other Models)

G09323365

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

DECELERATION FUEL CUT OPERATION

Application

Above Engine RPM

Above Vacuum In. Hg

Celica, Corona & Pickup

2590

16.75

Corolla

2390

16.75

Land Cruiser

1800

14.00

Tercel Calif.

⁽¹⁾ 2290

16.75

Federal

8.85

⁽¹⁾	Primary system only.