Fuel Cut Rpm: Inspection

Allow the engine to warm up to normal operating temperature.

1. Connect the TOYOTA hand-held tester or OBD II scan tool to the DLC3.
   Fig 1: Connecting Hand-Held Tester To DLC3

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2. Please refer to the TOYOTA hand-held tester or OBD II scan tool operator's manual for further details.

1. Increase the engine speed to at least 3,500 rpm.
2. Use a sound scope to check for injector operating noise.
   Fig 2: Using Sound Scope To Check For Injector Operating Noise

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3. Check that when the throttle lever is released injector, operation noise stops momentary and then resumes.

   HINT:

   Measure with the A/C OFF.

   Fuel return rpm: 1,400 rpm