Fuel Cut Rpm: Inspection

Allow the engine to warm up to the normal operating temperature.

1. Connect a hand-held tester or OBD II scan tool to the DLC3.
2. Select the following menu items: DIAGNOSIS / ENHANCED OBD II / DATA LIST / ENGINE SPD.
3. Please refer to the hand-held tester or OBD II scan tool operator's manual for further details.

Fig 1: Connecting Hand-Held Tester To DLC3

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

Fig 2: Checking Injector Operating Noise Using A Sound Scope

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HINT:

Measure with the A/C OFF.

Fuel return rpm: 1,400 rpm