Manual Procedure for Idle Volume Learning

[AZhitman]

Posting this up for a friend to refer to:

ECU Resetting Procedures
Timing is extremely critical. If it is NOT DONE within the specify time, the ECU will not reset and the Check Engine Light (CEL) will continue to remain ON.
A stop watch or an analog clock with a second’s needle will be useful.
Operations Procedures
1. Confirm that accelerator pedal is fully released, turn ignition switch “ON” and wait 3 seconds.
2. Repeat the following steps (2a and 2b) procedures quickly five times within 5 seconds.
2a. Fully depress the accelerator pedal (HARD).
2b. Fully release the accelerator pedal.
3. Wait 7 seconds, fully depress the accelerator pedal and keep it for approx. 10 seconds until the CEL starts blinking.
4. Fully release the accelerator pedal (while the CEL is still blinking)
5. Wait about 10 second.
6. Fully depress the accelerator pedal and keep it for more than 10 seconds.
7. Fully release the accelerator pedal (The CEL light will continue to blink).
8. Turn ignition switch to “OFF” position and now you can start the car. The CEL light should be gone.
If the CEL light continues to remain ON, repeat the above steps. Timing is EXTREMELY critical to resetting the ECU.

[SteveTheTech]

^Hey Boss I fixed your title, I was stumped as to just what you were talking about.

There are a few quick things I would like to add to your point there.

-If there is a P0507 stored in the engine computer this procedure will not ever complete. The best advise is to immediately before the procedure is to be completed erase the self diagnosis results.

-Also the procedure will not complete if the timing has been manually altered, using the Nissan Consult.

-The vehicle must be above 170F (not specific just a good rule of thumb)

-All loads must be off. AC,radio, lights etc.

This procedure teaches the computer what the airflow and base throttle position are under ideal conditions anything that may alter that might cause the procedure not to complete. If the procedure starts but does not complete the Check Engine Light will most likely illuminate with a P0507 stored.

Good Luck.

[AZhitman]

Thx brotha.

She's got a FX with a bad TPS, and is pissed because the repair includes the whole TB and isn't under warranty...

Told her I'd see what we can come up with.

[SteveTheTech]

Yeah that is kinda the way it goes with some of the earlier ones. There are many digital sweeping sensors that require the replacement of the device it monitors. The days are gone where you could replace the sensor alone, it kind of makes sense with drive by wire.