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Billy, Trainer/Master tech.
Category: Nissan
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Experience:  Trainer 8+ years - master tech. 10+ years, SAE member
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Sentra: what is the correct procedure body relearn

Customer Question

what is the correct procedure for throttle body relearn on a 2006 nissan sentra 1.8L manual
Submitted: 2 years ago.
Category: Nissan
Expert:  Billy replied 2 years ago.
Hello and Welcome! I'm Billy and i will assist you with your inquiry. Feel free to ask if any further info is needed.
If the throttle was disconnected, you need to proceed as following:
Perform If Throttle Actuator Is Disconnected
Throttle Valve Closed Position Learning
Throttle Valve Closed Position Learning is an operation to learn the fully closed position of the throttle valve by monitoring the throttle position sensor
output signal. It must be performed each time harness connector of electric throttle control actuator or ECM is disconnected.
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.
Make sure that throttle valve moves during above 10 seconds by confirming the operating sound.
IF the throttle was replaced, then you need to proceed as following:
Start engine and warm it up to normal operating temperature.
4. Check that all items listed under the topic PREPARATION (previously mentioned) are in good order.
5. Turn ignition switch OFF and wait at least 10 seconds.
6. Confirm that accelerator pedal is fully released, turn ignition switch ON and wait 3 seconds.
7. Repeat the following procedure quickly five times within 5 seconds.
a. Fully depress the accelerator pedal.
b. Fully release the accelerator pedal.
8. Wait 7 seconds, fully depress the accelerator pedal and keep it for approx. 20 seconds until the MIL stops blinking and turned ON.
9. Fully release the accelerator pedal within 3 seconds after the MIL turned ON.
10. Start engine and let it idle.
11. Wait 20 seconds.
12. Rev up the engine two or three times and make sure that idle speed and ignition timing are within the specifications.
13. If idle speed and ignition timing are not within the specification, Idle Air Volume Learning will not be carried out successfully. In this case, find
the cause of the incident by referring to the Diagnostic Procedure.
If idle air volume learning cannot be performed successfully, proceed as follows:
1. Check that throttle valve is fully closed.
2. Check PCV valve operation.
3. Check that downstream of throttle valve is free from air leakage.
4. When the above three items check out OK, engine component parts and their installation condition are questionable. Check and eliminate the
cause of the incident.
Thank you for your trust! Get back to me if you need more assistance...Thank you in advance for the positive rating...

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