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Old 04-14-2011, 01:10 AM   Thread Starter #1
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Default ECU, Air Idle Volume Reset

How often should we reset the ecu, accelerator pedal, throttle close position, and air volume learning on our cars?
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Old 04-14-2011, 02:17 AM   #2
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Default Re: Ecu, air idle volume reset

I dont think theres a def answer, but anytime you add a new mod , you should reset the ECU and let it re-learn / idle and drive it for 20 mins.
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Old 04-15-2011, 02:30 PM   #3
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Default Re: ECU, Air Idle Volume Reset

how do you reset it?
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Old 04-15-2011, 02:41 PM   #4
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Default Re: ECU, Air Idle Volume Reset

basically resetting the ECU , I belive theres a key thing as well , but alot of ppl dont get that on point.

resetting the ECU and let the ECU relearn is the best way to go after every new mod.

the ECU recalibrates the parameters in the A/F anytime you do an exhuast / intake upgrade.
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Old 04-15-2011, 02:43 PM   #5
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Default Re: ECU, Air Idle Volume Reset

Originally Posted by NiZMo1o1 View Post
basically resetting the ECU , I belive theres a key thing as well , but alot of ppl dont get that on point.

resetting the ECU and let the ECU relearn is the best way to go after every new mod.

the ECU recalibrates the parameters in the A/F anytime you do an exhuast / intake upgrade.
how do you do it?
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Old 04-15-2011, 03:23 PM   Thread Starter #6
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Default Re: ECU, Air Idle Volume Reset

Basic ECU Reset
Operations Procedures:

1. Confirm that accelerator pedal is fully released, turn ignition switch “ON” (NOT start) 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 seconds.
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. Remember, timing is EXTREMELY critical to resetting the ECU. You may even need someone's help to do this correctly.

Accelerator Pedal Released Position LearningDescription:
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 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.


Idle Air Volume Learning
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 each time electric throttle control actuator or ECM is replaced, or if 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 Degrees C (158 – 212 Degrees F)
- PNP switch: ON (Park/Neutral Position Safety Switch - AT only, MT fully depress clutch)
- Electric load switch: OFF (Air conditioner, rear window defogger, headlamps. Note: on vehicles equipped with daytime light systems, if the parking brake is applied before the engine is started, the headlamps will not be illuminated.)
- Steering wheel: Neutral (Straight-ahead position)
- Vehicle speed: Stopped
- Transmission: Warmed-up (For A/T models, drive vehicle for 10 minutes.)

Operation Procedure:
1. Perform "Accelerator Pedal Released Position Learning"
2. Perform "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 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:
7a. Fully depress the accelerator pedal.
7b. 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:
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