Fuel Cut Control System Inspection
- Warm up engine and idle it
- Turn off the electrical loads and A/C switch.
- Connect the M-MDS to the DLC-2.
- Access RPM PID
- Listen for the fuel injector operation sound at all cylinders using the soundscope and monitor both PIDs while performing the following steps:
- Depress the accelerator pedal and increase the engine speed to 4,000 RPM.
- Quickly release the accelerator pedal (brake pedal is not depressed) and verify that the fuel injector operation sound stops, and starts again when the engine speed drops below 1,200 RPM.
- If not as specified, inspect the following.
- ECT sensor and related wiring harness
(See ENGINE COOLANT TEMPERATURE (ECT) SENSOR INSPECTION [L5] .)
- Neutral/CPP switch and related wiring harness (MTX)
- TR switch and related wiring harness (ATX)
- ECT sensor and related wiring harness
- If not as specified, inspect the following.