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Fuel Cut System

  1. On Avalon, Camry and Sienna, remove "V" bank cover on top of engine for access to fuel injectors. See Figure-4.
  2. On all models, connect scan tool to data link connector No. 3. See Figure-71. Scan tool is used to read engine RPM. Start engine and warm engine to normal operating temperature.
  3. Ensure A/C and all accessories are off. Gradually increase engine RPM to specified RPM. See FUEL CUT SYSTEM TESTING SPEED  table.
    FUEL CUT SYSTEM TESTING SPEED

    Application Engine RPM
    Avalon, Camry, Sienna, Tacoma, T100 & 4Runner 3500
    Land Cruiser & LX470 2500
  4. 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).
  5. 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
Avalon 1400
Camry 1200
Land Cruiser & LX470 1000
Sienna 1200
Tacoma & T100
A/T 1200
M/T 1000
4Runner 1500
(1) Check with engine at normal operating temperature and A/C off.