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Idle Re-learn
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Can someone please tell me what it means repeat 5x circle in yellow?
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GREAT! Thanks for the advices; I want also divide my successful experience in 1) teaching the accelerator/gas pedal and in 2) teaching the throttle body closed position and 3) idle air volume learning and 4) resetting engine warning light from instrumentation panel. I di yesterday all these successfully with my friend's Micra K12 1,2 but it goes the same with may Nissans, which had high idle 1500 rpm and a bit other difficulties in running. All was cleared with this.
BTW: It did not pass the emission control, but for that it needed only a short additional earthing/grounding wire to give better earthing to first lambda (black wire before the first plug coming from ECU to lambda to be connected with extra wire to ground.) This additional earthing helped that a bit rough hiccups in idle, but the main thing was that the emissions were just like PERFECT after that. So the reason there was the lack of earthing in ECU for the lambdas and solution cost was some 10 cents only.
Please enjoy - just follow these and all should be solved.
TOOLS NEEDED: stopwatch or timer showing seconds.
ACCELERATOR PEDAL RELEASED POSITION LEARNING - Better to be done when engine is cold; may work when hot, as well.
1. Make sure that accelerator pedal is fully released.
2. Turn ignition switch ON and wait at least 2 seconds.
3. Turn ignition switch OFF and wait at least 10 seconds.
4. Turn ignition switch ON and wait at least 2 seconds.
5. Turn ignition switch OFF and wait at least 10 seconds.
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THROTTLE VALVE CLOSED POSITION LEARNING - Better to be done when engine is cold; may work when engine is hot, as well.
1. Make sure that accelerator pedal is fully released.
2. Turn ignition switch ON.
3. Turn ignition switch OFF and wait at least 10 seconds.
4. Make sure that throttle valve moves during above 10 seconds by confirming the operating sound.
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What I learned in this; it was difficult to get all done in correct time. It is so confusing. When all is not OK and done in time and properly, you will see it when the light should start blinking in item 7. If it does not start, you can start all again form the beginning. It happened me twice and managed to get the light blinking on third time: But I was so surprised that did not remember what to do next!
So - start all again from the beginning; but then I managed immediately. Maybe it would be helpful to have someone committed to read the paper and give instructions all that time.
IDLE AIR VOLUME LEARNING - to be done when engine is hot
1. First perform the Accelerator Released Position and then the Throttle Valve Closed Position procedure as was shown above.
2. Warm up engine/transmission at this point by driving on the road for not less than 30 minutes; warming up the car in the garage doesn’t cut it!
3. Put the car in Park, turn off all electrical powered stuff, wheels turned straight.
4. Turn key OFF and wait at least 10 seconds.
5. Turn key ON (not ignition) and start stopwatch at same time.
6. When stopwatch is at 3 seconds, press & release accelerator pedal 5 times fully and quickly within 5 seconds.
7. Wait 7 seconds or more then fully press the accelerator pedal and hold for approximately 20 seconds or more until the check engine light stops blinking and constantly stays on.
(note: If the CEL never starts blinking, then something is not working and you'd better start over again).
8. Within 3 seconds after the check engine light stays constantly on, release the accelerator pedal.
9. Immediately start the engine and let it idle. It may still likely be a high-rev/pulsating idle.
10. Let it run for no less then 20 seconds, then rev the engine a few times.
11. With foot on brake, shift into Drive. Idle should now go down under 1000 rpm. Shift to Park again, and the car should find its regular idle speed. Operation will be normal except theCEL may still be on. It may disappear soon on its own, or you can do the following:
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Nissan Electronic Throttle Body (ETB) Re-Learn Procedure - YouTube
EASY RESET OF CHECK ENGINE LIGHT (CEL)
1. Turn key OFF and wait at least 10 seconds
2. Turn key ON (no ignition), wait 3 seconds, then press & release accelerator 5x hard and quickly.
3. Wait 10 seconds, then fully press accelerator.
4. After about 12 seconds CEL will go off then start blinking. As soon as it starts blinking, release the accelerator.
5. Wait 10 seconds, then fully press accelerator again.
6. Wait 10 seconds, then release the accelerator again.
7. Turn the key to off, then immediately start the engine. The CEL should be gone now.
![Leg Automotive tire Automotive lighting Automotive design Automotive exterior]()
![Hand Safety glove Fluid Automotive tire Finger]()
![Hand Automotive tire Finger Bumper Thumb]()
BTW: It did not pass the emission control, but for that it needed only a short additional earthing/grounding wire to give better earthing to first lambda (black wire before the first plug coming from ECU to lambda to be connected with extra wire to ground.) This additional earthing helped that a bit rough hiccups in idle, but the main thing was that the emissions were just like PERFECT after that. So the reason there was the lack of earthing in ECU for the lambdas and solution cost was some 10 cents only.
Please enjoy - just follow these and all should be solved.
TOOLS NEEDED: stopwatch or timer showing seconds.
ACCELERATOR PEDAL RELEASED POSITION LEARNING - Better to be done when engine is cold; may work when hot, as well.
1. Make sure that accelerator pedal is fully released.
2. Turn ignition switch ON and wait at least 2 seconds.
3. Turn ignition switch OFF and wait at least 10 seconds.
4. Turn ignition switch ON and wait at least 2 seconds.
5. Turn ignition switch OFF and wait at least 10 seconds.
----------------------------------------------------------------------------------
THROTTLE VALVE CLOSED POSITION LEARNING - Better to be done when engine is cold; may work when engine is hot, as well.
1. Make sure that accelerator pedal is fully released.
2. Turn ignition switch ON.
3. Turn ignition switch OFF and wait at least 10 seconds.
4. Make sure that throttle valve moves during above 10 seconds by confirming the operating sound.
-----------------------------------------------------------------------------------
What I learned in this; it was difficult to get all done in correct time. It is so confusing. When all is not OK and done in time and properly, you will see it when the light should start blinking in item 7. If it does not start, you can start all again form the beginning. It happened me twice and managed to get the light blinking on third time: But I was so surprised that did not remember what to do next!
So - start all again from the beginning; but then I managed immediately. Maybe it would be helpful to have someone committed to read the paper and give instructions all that time.IDLE AIR VOLUME LEARNING - to be done when engine is hot
1. First perform the Accelerator Released Position and then the Throttle Valve Closed Position procedure as was shown above.
2. Warm up engine/transmission at this point by driving on the road for not less than 30 minutes; warming up the car in the garage doesn’t cut it!
3. Put the car in Park, turn off all electrical powered stuff, wheels turned straight.
4. Turn key OFF and wait at least 10 seconds.
5. Turn key ON (not ignition) and start stopwatch at same time.
6. When stopwatch is at 3 seconds, press & release accelerator pedal 5 times fully and quickly within 5 seconds.
7. Wait 7 seconds or more then fully press the accelerator pedal and hold for approximately 20 seconds or more until the check engine light stops blinking and constantly stays on.
(note: If the CEL never starts blinking, then something is not working and you'd better start over again).
8. Within 3 seconds after the check engine light stays constantly on, release the accelerator pedal.
9. Immediately start the engine and let it idle. It may still likely be a high-rev/pulsating idle.
10. Let it run for no less then 20 seconds, then rev the engine a few times.
11. With foot on brake, shift into Drive. Idle should now go down under 1000 rpm. Shift to Park again, and the car should find its regular idle speed. Operation will be normal except theCEL may still be on. It may disappear soon on its own, or you can do the following:
-----------------------------------------------------------------------------------
Nissan Electronic Throttle Body (ETB) Re-Learn Procedure - YouTube
EASY RESET OF CHECK ENGINE LIGHT (CEL)
1. Turn key OFF and wait at least 10 seconds
2. Turn key ON (no ignition), wait 3 seconds, then press & release accelerator 5x hard and quickly.
3. Wait 10 seconds, then fully press accelerator.
4. After about 12 seconds CEL will go off then start blinking. As soon as it starts blinking, release the accelerator.
5. Wait 10 seconds, then fully press accelerator again.
6. Wait 10 seconds, then release the accelerator again.
7. Turn the key to off, then immediately start the engine. The CEL should be gone now.
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