[tripleJs15]

Anyone knows the procedure to re-calibrate the Throttle position sensors ?

Thanks in advance.

 

[paparazzi]

search error code p1225 in the service maual. That should get you to it quickly

 

[tripleJs15]

Sweet thanks Shiv!

 

[seanm]

Its fairly involved, or not that difficult, but a lot of steps. Have to learn the closed values, and do an idle relearn.

 

[tripleJs15]

Do you know the exact steps, or can this be done through the Cobb AP ?

 

[seanm]

Accelerator Pedal Released Position Learning is a function of ECM 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 the harness connector of the accelerator pedal position sensor or ECM is disconnected.
ACCELERATOR PEDAL RELEASED POSITION LEARNING : Special Repair Requirement
(GT-R certified NISSAN dealer)
1.START
1. Check 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.
>> END

THROTTLE VALVE CLOSED POSITION LEARNING : Special Repair Requirement
(GT-R certified NISSAN dealer)
1.START
1. Check that accelerator pedal is fully released.(this might be wrong-SM)
2. Turn ignition switch ON.
3. Turn ignition switch OFF and wait at least 10 seconds
Check that throttle valve moves during the above 10 seconds by confirming the operating sound.
>> END

Idle Air Volume Learning is a function of ECM to learn the idle air volume that keeps engine idle speed within
the specific range. It must be performed under the following conditions:
• Each time electric throttle control actuator or ECM is replaced.
• Idle speed or ignition timing is out of specification.
IDLE AIR VOLUME LEARNING : Special Repair Requirement (GT-R certified NISSAN
dealer)
1.PRECONDITIONING
Check 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)
• Selector lever: P or N
• Electric load switch: OFF
(Air conditioner, headlamp, rear window defogger)
On vehicles equipped with daytime light systems, if the parking brake is applied before the engine is
started the headlamp will not illuminate.
• Steering wheel: Neutral (Straight-ahead position)
• Vehicle speed: Stopped
• Transmission: Warmed-up
- With CONSULT-III: Drive vehicle until "ATF TEMP SE 1" in "DATA MONITOR" mode of "A/T" system indicates
less than 0.9V.
- Without CONSULT-III: Drive vehicle for 10 minutes.
Do you have CONSULT-III?
YES >> GO TO 2.
NO >> GO TO 3.
2.PERFORM IDLE AIR VOLUME LEARNING
With CONSULT-III
1. Perform Accelerator Pedal Released Position Learning. Refer to EC-20, "ACCELERATOR PEDAL
RELEASED POSITION LEARNING : Special Repair Requirement (GT-R certified NISSAN dealer)".
2. Perform Throttle Valve Closed Position Learning. EC-20, "THROTTLE VALVE CLOSED POSITION
LEARNING : Special Repair Requirement (GT-R certified NISSAN dealer)".
3. Start engine and warm it up to normal operating temperature.
4. Select "IDLE AIR VOL LEARN" in "WORK SUPPORT" mode.
5. Touch "START" and wait 20 seconds.
Is "CMPLT" displayed on CONSULT-III screen?
YES >> GO TO 4.
NO >> GO TO 5.
3.PERFORM IDLE AIR VOLUME LEARNING
Without CONSULT-III
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 Accelerator Pedal Released Position Learning. Refer to EC-20, "ACCELERATOR PEDAL
RELEASED POSITION LEARNING : Special Repair Requirement (GT-R certified NISSAN dealer)".
2. Perform Throttle Valve Closed Position Learning. EC-20, "THROTTLE VALVE CLOSED POSITION
LEARNING : Special Repair Requirement (GT-R certified NISSAN dealer)".
3. Start engine and warm it up to normal operating temperature.
4. Turn ignition switch OFF and wait at least 10 seconds.
5. Confirm that accelerator pedal is fully released, turn ignition switch ON and wait 3 seconds.
6. Repeat the following procedure quickly five times within 5 seconds.
- Fully depress the accelerator pedal.
- Fully release the accelerator pedal.
7. Wait 7 seconds, fully depress the accelerator pedal it for approx. 20 seconds until the MIL stops blinking
and turn ON.
8. Fully release the accelerator pedal within 3 seconds after the MIL turns ON.
9. Start engine and let it idle.
10. Wait 20 seconds
>> GO TO 4.
4.CHECK IDLE SPEED AND IGNITION TIMING
Rev up the engine two or three times and check that idle speed and ignition timing are within the specifications.
Refer to EC-580, "Idle Speed" and EC-580, "Ignition Timing".
Is the inspection result normal?
YES >> INSPECTION END
NO >> GO TO 5.

 

[seanm]

I think that second part of the above procedure is wrong. I think they meant to say that the throttle was fully depressed. Not the first time I have seen errors in the manuals.

 

[tripleJs15]

Great, will try this tonight when I put the throttle bodies back on.

 

[JonV8944s]

this can be done with out the 'consult' ?

 

[tripleJs15]

Seems like it, the second set of instructions state "Without Consult III".

 

[Visconti]

this can be done with out the 'consult' ?

EcuTek software support this.. not very helpful for anyone with Cobb..

 

[tripleJs15]

Interesting, maybe an update for the Cobb!

 

[dcp2]

Can i do this with the ecutek bt dongle?


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