Operation CHARM: Car repair manuals for everyone.
Home >> Mazda >> 1999 >> Protege DX L4-1.6L DOHC >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Testing and Inspection >> Component Tests and General Diagnostics >> Fuel Cut Control Inspection
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

Or, hide this message: temporarily or permanently

Fuel Cut Control Inspection

1. Warm up engine and let it idle.
2. Turn off the electrical loads and A/C switch.




3. Connect the SST (NGS tester) to the DLC-2.
4. Select the PID/DATA MONITOR AND RECORD function on the NGS display.
5. Select RPM and INJ PIDs.
6. Press START.
7. Monitor both PIDs while performing the following steps.

1. Depress the accelerator pedal and increase the engine speed to 4,000 rpm.

2. Release the accelerator pedal (brake pedal not depressed) and inspect that the fuel injector duration time is 0 msec., and 2 - 5 msec. when the engine speed drops below 1,200 rpm.
- If not as specified, carry out the following:
- Engine temperature sensor inspection
- Neutral/clutch switch inspection (MTX)
- Transaxle range switch inspection (ATX)
pro multis · About Operation CHARM