Relearn Throttle Body - Nissan Frontier Forum
 
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post #1 of 9 (permalink) Old 01-18-2012, 12:28 PM Thread Starter
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Relearn Throttle Body

Hi everyone, so I am having some major issues trying to relearn my throttle. I recently did the spark plugs on my 2006 frontier with the 4cylinder. I had to remove the entire intake system to get to the spark plugs. I followed the book and took all vacuum hoses off, the throttle body off and disconnected and took the air box off. Everything went smoothly. I cleaned up my throttle body, replaced spark plugs and intake manifold gaskets, then put everything back together. Started the truck up and noticed its idling high and constantly searching for an idle. I followed the procedure in the book to relearn the throttle but have had no such luck. Two codes have popped up on the ECU, on is P0455 emissions leak, and P0507 which is high idle warning. The emissions leak is odd, because I didnt do anything with the fuel system. By the way I did check my gas cap and it does seal properly. Any help would be great. Thank you
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post #2 of 9 (permalink) Old 01-18-2012, 02:40 PM
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I've never done this on my '07, but it would seem that you have a vacuum leak. Wouldn't the most likely culprit be the intake manifold gasket?
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post #3 of 9 (permalink) Old 01-18-2012, 03:04 PM
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I'm guessing something isn't snugly connected to get the 455 code.

As for clearing the 507, I had to try about 12 times to get it to work to re-learn the idle. I can pull the instructions a bit later today - but I also reset the accelerator pedal and throttle body closed positions before it took.

2005 Frontier CC Nismo 4x4
Exterior: 20% tint, ARE Topper
Performance: NISMO CAI
Suspension: Radflo 2" front, Bils5125 rear with Calmini 1.5" Shackles, Deaver AAL, 285/75 GY Duratrac
Electronics: skipped the HU, audio in to Alpine ERE G180 Equalizer, JL A4300, Alpine MRP 350, Infinity Kappa 60.7cs and 62.7i, JL Stealthbox
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post #4 of 9 (permalink) Old 01-18-2012, 03:22 PM Thread Starter
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Quote:
Originally Posted by characterzero View Post
I'm guessing something isn't snugly connected to get the 455 code.

As for clearing the 507, I had to try about 12 times to get it to work to re-learn the idle. I can pull the instructions a bit later today - but I also reset the accelerator pedal and throttle body closed positions before it took.
Your talking about the procedure in the book thats turn on for 2 seconds then off for 10 and so on right?

I've read to that there is a special lubrication on the throttle body that is removed with cleaner and causes the butterfly to stick. Anyone heard anything about this? The suggestion was to loosen the two screws that hold the butterfly and allow it to move and adjust then take a cotton swab with some motor oil on it and lube the inside

Last edited by Avalanche; 01-18-2012 at 03:24 PM. Reason: Automerged Doublepost
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post #5 of 9 (permalink) Old 01-18-2012, 11:02 PM Thread Starter
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what were the directions you were talking about?
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post #6 of 9 (permalink) Old 01-19-2012, 12:05 AM
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My 3.5se has a p0507 code, anyone know the idle relearn procedure? - Nissan Forums: Nissan Forum



IDLE SPEED CHECK
1. Run engine at about 2,000 rpm for about 2 minutes under no-load.
2. Rev engine (2,000 to 3,000 rpm) two or three times under no-load, then run engine at idle speed for about
1 minute.
3. Check idle speed.
OK or NG
OK >> GO TO 10.
NG >> GO TO 4.

4. PERFORM ACCELERATOR PEDAL RELEASED POSITION LEARNING
1. Stop engine.
2. Perform EC-668, "Accelerator Pedal Released Position Learning" .
>> GO TO 5.

5. PERFORM THROTTLE VALVE CLOSED POSITION LEARNING
Perform EC-669, "Throttle Valve Closed Position Learning" .
>> GO TO 6.


6. PERFORM IDLE AIR VOLUME LEARNING
Perform EC-669, "Idle Air Volume Learning" .
Which is the result CMPLT or INCMP?
CMPLT or INCMP
CMPLT>> GO TO 7.
INCMP >> 1. Follow the construction of “Idle Air Volume Learning”.

__________________________________________________ ______
Accelerator Pedal Released Position Learning UBS0035C
DESCRIPTION
“Accelerator Pedal Released Position Learning” is an operation to learn the fully released position of the accelerator
pedal by monitoring the accelerator pedal position sensor output signal. It must be performed each time
harness connector of accelerator pedal position sensor or ECM is disconnected.
OPERATION PROCEDURE
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” wait at least 10 seconds.
4. Turn ignition switch “ON” and wait at least 2 seconds.
5. Turn ignition switch “OFF” wait at least 10 seconds.

Throttle Valve Closed Position Learning UBS0035D
DESCRIPTION
“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.
OPERATION PROCEDURE
1. Make sure that accelerator pedal is fully released.
2. Turn ignition switch “ON”.
3. Turn ignition switch “OFF” wait at least 10 seconds.
Make sure that throttle valve moves during above 10 seconds by confirming the operating sound.

Idle Air Volume Learning UBS0035E
DESCRIPTION
“Idle Air Volume Learning” is an operation to learn the idle air volume that keeps each engine within the specific
range. It must be performed under any of the following conditions:
 Each time electric throttle control actuator or ECM is replaced.
 Idle speed or ignition timing is out of specification.
PREPARATION
Before performing “Idle Air Volume Learning”, make sure that all of the following conditions are satisfied.
Learning will be cancelled if any of the following conditions are missed for even a moment.
 Battery voltage: More than 12.9V (At idle)
 Engine coolant temperature: 70 - 100°C (158 - 212°F)
 PNP switch: ON
 Electric load switch: OFF
(Air conditioner, headlamp, rear window defogger)
On vehicles equipped with daytime light systems, set lighting switch to the 1st position to light
only small lamps.
 Steering wheel: Neutral (Straight-ahead position)
 Vehicle speed: Stopped
 Transmission: Warmed-up
For A/T models with CONSULT-II, drive vehicle until “FLUID TEMP SE” in “DATA MONITOR” mode of “A/
T” system indicates less than 0.9V.
For A/T models without CONSULT-II and M/T models, drive vehicle for 10 minutes.
OPERATION PROCEDURE
EC-670
Without CONSULT-II
NOTE:
 It is better to count the time accurately with a clock.
 It is impossible to switch the diagnostic mode when an accelerator pedal position sensor circuit
has a malfunction.
1. Perform EC-668, "Accelerator Pedal Released Position Learning" .
2. Perform EC-669, "Throttle Valve Closed Position Learning" .
3. Start engine and warm it up to normal operating temperature.
4. Check that all items listed under the topic “PRE-CONDITIONING” (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 goes off.
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, the result will be incomplete. In this case,
find the cause of the problem by referring to the “DIAGNOSTIC PROCEDURE” below.
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 problem.
It is useful to perform EC-752, "TROUBLE DIAGNOSIS - SPECIFICATION VALUE" .
5. If any of the following conditions occur after the engine has started, eliminate the cause of the problem and perform “Idle air volume learning” all over again:
– Engine stalls.
– Erroneous idle.
ITEM SPECIFICATION
Idle speed M/T: 700±50 rpm
A/T: 700±50 rpm (in “P” or “N” position)
Ignition timing M/T: 15±5° BTDC
A/T: 15±5° BTDC (in “P” or “N” position)
SEC897C

2005 Frontier CC Nismo 4x4
Exterior: 20% tint, ARE Topper
Performance: NISMO CAI
Suspension: Radflo 2" front, Bils5125 rear with Calmini 1.5" Shackles, Deaver AAL, 285/75 GY Duratrac
Electronics: skipped the HU, audio in to Alpine ERE G180 Equalizer, JL A4300, Alpine MRP 350, Infinity Kappa 60.7cs and 62.7i, JL Stealthbox
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post #7 of 9 (permalink) Old 01-19-2012, 07:45 PM Thread Starter
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Thank you characterzero for the useful information. I noticed that it mentions the throttle body being completely closed. Mine is open a little and when you turn the ignition on and then back off it closes completely then opens all the way then goes back to being part open. Any ideas why?? If you push on it it shuts all the way but its as if its spring loaded and the butterfly goes back out a little bit. Is the throttle body perhaps broken???
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post #8 of 9 (permalink) Old 01-20-2012, 09:31 AM
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Quote:
Originally Posted by Avalanche View Post
Thank you characterzero for the useful information. I noticed that it mentions the throttle body being completely closed. Mine is open a little and when you turn the ignition on and then back off it closes completely then opens all the way then goes back to being part open. Any ideas why?? If you push on it it shuts all the way but its as if its spring loaded and the butterfly goes back out a little bit. Is the throttle body perhaps broken???
IF you cleaned it and pushed it open by hand, you could have damaged it.

I would do the throttle body position reset several times and hope like hell it takes!

2005 Frontier CC Nismo 4x4
Exterior: 20% tint, ARE Topper
Performance: NISMO CAI
Suspension: Radflo 2" front, Bils5125 rear with Calmini 1.5" Shackles, Deaver AAL, 285/75 GY Duratrac
Electronics: skipped the HU, audio in to Alpine ERE G180 Equalizer, JL A4300, Alpine MRP 350, Infinity Kappa 60.7cs and 62.7i, JL Stealthbox
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post #9 of 9 (permalink) Old 11-18-2012, 10:15 AM
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I had this prob when I bought mine.. high idle Took off idle control valve. looked inside and there was a pc of crap not letting it slide.. cleaned it out with brake cleaner and it works perfect now runs at about 700 rpm idle ..was at 1500
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