Fuel Cut Control System Inspection

Warm up engine and idle it.
Turn off the electrical loads and A/C switch.
Connect WDS or equivalent to the DLC-2.
Select RPM PID.
Listen for the fuel injector operation sound at all cylinders using the soundscope and monitor both PIDs while performing the following steps:
1. (1) Depress the accelerator pedal and increase the engine speed to 4,000 rpm .
2. (2) 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 harness
      (See ENGINE COOLANT TEMPERATURE (ECT) SENSOR INSPECTION .)
    - Neutral/clutch switch and related harness (MTX)
      (See CLUTCH SWITCH INSPECTION .)
    - TR switch and related harness (ATX)
      (See TRANSAXLE RANGE (TR) SWITCH INSPECTION .)