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.
2. Refer to the TOYOTA HAND-HELD TESTER or OBDII scan tool operators manual for further details.
   Fig 1: Connecting Toyota Hand-Held Tester Or OBD II Scan Tool To DLC3

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1. Increase the engine speed to at least 3,500 RPM.
2. Use a sound scope to check for injector operating noise.
3. When the throttle lever is released, check that injector operation noise stops momentarily and then resumes.

   HINT:

   Measure with the A/C OFF.

   Fuel return RPM: 

   1,400 RPM 

   Fig 2: Checking Injector Operating Noise

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002