This will clear all learnt values for Idle Control and AFR Learning including Fuel Trims.
This will commence an auto learn airflow/throttle balance sequence, ensure that the Engine and TCM are over 65 deg C, the vehicle is in Park with handbrake ON and no DTCs are current or historic then start the auto learn sequence. See the detailed Idle Learning Air Volume sequence on the following pages.
Will cut individual fuel injectors to help isolate problem cylinders.
This function will initial the ECM to learn the throttle motor butterfly closed position
This function will balance the 2 x throttle motor butterflies for idle stability. This should be performed in the following situation
Before commencing test:
|
Now using the ProECU ECM Special Tool, start the engine and allow it to Idle and select the Idle Learning feature and follow the on-screen instructions.
If the Gear Position indicator is flashing N on a manual transmission vehicle then the ECM has lost the base learning voltage for the neutral position switch and the following sequence will need to be carried out to reset the learnt base position using the following sequence.
NOTE: If you cannot make the sequence work then we suggest you use a stop watch to ensure the time periods are accurate, this Nissan learning sequence is difficult to follow but it does work. It’s important that from turning the ignition ON to the end of the 5 clutch depresses and the release of the SPORT button that the time needs to be less than 26 seconds for this to be successful.
How to carry out the Neutral Position Learning Sequence:
NOTE : We believe this same procedure can be used on the new Nissan Z / 400Z when equipped with the manual transmission. We have seen one example where this has been used in the field to correctly resolve the same error and flashing "N" gear indicator on the dashboard. This was used on a 2023 USDM car.
Steering Wheel Alignment
This will reset the base learned position for the steering wheel, ensure the steering wheel is straight before commencing this learning procedure.
This will allow you to turn ON and OFF the fuel pump to establish if the pump is working or not. Another potential use is to pressurize the fuel system to check for leaks, or drain the tank by disconnecting a fuel line and running the fuel into some sort of fuel can.