Fuel Cut Control System Inspection

WARNING: This page is about a different car, the 2016 Mazda CX-3. However, it is still accessible from the selected car via links, so may be relevant.

NOTE:

This inspection has to be performed after the Fuel Injector Operation Inspection.

If data monitor function of M-MDS is used:

Warm up the engine and idle it.
Connect the M-MDS to the DLC-2.
Select the RPM and the FUELPW PIDs. (Refer to ON-BOARD DIAGNOSTIC TEST .)
Monitor both PIDs while performing the following steps:
1. Depress the accelerator pedal and increase the RPM PID to 4, 000 rpm .
2. Quickly release the accelerator pedal (brake pedal is not depressed) and verify that the FUELPW PID is 0 msec , and 2-5 msec when the RPM PID drops below 1, 200 rpm.
  - If not as specified, inspect the following:
    - ECT sensor No. 1 and related wiring harness (Refer to ENGINE COOLANT TEMPERATURE (ECT) SENSOR INSPECTION .)