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Fuel Cut Control Unit: Testing and Inspection

Fuel Cut Control System Inspection

1. Warm-up engine and let it idle.
2. Turn off the electrical loads and A/C switch.
3. Connect the WDS or equivalent to the DLC-2.
4. Select RPM PID.
5. Listen for the fuel injector operation sound at all cylinders using the soundscope and monitor PID while performing the following steps:
1. Depress the accelerator pedal and increase the engine speed to 4,000 rpm.
2. Quickly release the accelerator pedal (brake pedal is not depressed) and verify that the fuel injector operation sound stops when the accelerator pedal is released and starts again when the engine speed drops below 1,200 rpm.
- If not as specified, inspect the following:
- ECT sensor and related harness
- Neutral/clutch switch and related harness (MTX) (See CLUTCH PEDAL POSITION (CPP) SWITCH INSPECTION].)
- TR switch and related harness (ATX) (See TRANSAXLE RANGE (TR) SWITCH INSPECTION [AW6A-EL].)
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