Fuel Delivery and Air Induction: Testing and Inspection

FUEL CUT RPM INSPECTION

1. Warm up engine.
- Allow the engine to warm up to normal operating temperature.
2. Connect tachometer to engine.





- Connect the tester probe of a tachometer to terminal IG(-) of the DLC1.

NOTICE:
- Never allow the tachometer terminal to touch ground as it could result in damage to the igniter and/or ignition coil.
- As some tachometers are not compatible with this ignition system, we recommend that you confirm the compatibility of your unit before use.

3. Inspect fuel cut-off operation.
- Increase the engine speed to at least 3,000 rpm.





- Check for injector operating noise.
- Check that when the throttle lever is released, injector operation noise stops momentarily and then resumes.

HINT: Measure with the A/C OFF.

Fuel return speed: 1,400 rpm

(Vehicle speed less than 25 km/h (16 mph), with brake OFF)

4. Disconnect tachometer.