Fuel Cut System

Connect scan tool to data link connector No. 3. See Figure. Scan tool is used to monitor engine RPM.
Start engine and warm engine to normal operating temperature. Ensure the A/C and all accessories are off. Gradually increase engine RPM to 3000 RPM.
Using stethoscope, check for fuel injector operating sound. Ensure when throttle lever is released, fuel injector stops operating momentarily and then resumes operating (fuel return RPM).
Ensure fuel return RPM is within specification. See FUEL CUT SYSTEM SPECIFICATIONS table. Shut engine off. Remove scan tool.

FUEL CUT SYSTEM SPECIFICATIONS ⁽¹⁾

Application

Fuel Return RPM

Non-Turbo

1000

Turbo

1100

⁽¹⁾	Check with engine at normal operating temperature and with A/C and all accessories off.

NOTE: Fuel pressure control system may also be referred to as fuel pressure-up system.