If you’ve recently installed a new electronic throttle body in your Nissan, it’s essential to carry out a relearn procedure to ensure its proper functioning. This process is crucial for the engine control unit to adapt to the new component and maintain smooth operation. Here’s a step-by-step guide to help you through the relearn procedure.
Preparation Steps
Before beginning the relearn procedure, ensure that there are no faults stored in the engine control unit. Additionally, check the vacuum and crankcase ventilation systems for any leaks and repair them if necessary. It’s also important to inspect the oil dipstick and timing cover for leaks. Verify that the battery voltage is higher than 13 volts when idling.
Start by disconnecting the battery for at least 30 seconds to reset the control unit. Keep in mind that this action may also reset the pin on your radio. After reconnecting the battery, bring the engine and transmission up to operating temperature.
Relearn Procedure
Before initiating the relearn procedure, turn off all loads such as the radio, lights, and air-conditioning. Place the steering wheel into the straight-ahead position.
The following steps detail the relearn procedure:
- Turn the ignition on for two seconds without starting the engine, and then turn it off for 10 seconds. Repeat this process two times.
- With the throttle pedal released, turn on the ignition without starting the engine and wait for three seconds. Fully press and release the accelerator pedal five times within five seconds with the ignition still on and the engine off. Then, wait seven seconds.
- Fully depress the accelerator pedal for approximately twenty seconds until the malfunction indication lamp changes from flashing to constant.
- After the light stops flashing, release the throttle pedal within three seconds and start the engine. Let it idle for about 20 seconds.
If the relearn procedure was not successful, it’s important to repeat the entire process again to ensure proper adaptation of the electronic throttle body by the engine control unit.
Following these steps will help you carry out the relearn procedure for a new electronic throttle body in your Nissan, ensuring optimal performance and smooth operation of your vehicle.
What should be checked before starting the relearn procedure for the electronic throttle body in a Nissan?
Before starting the relearn procedure, check the vacuum and crankcase ventilation systems for leaks, repair them if necessary, ensure the oil dipstick and timing cover are free of leaks, and check that the battery voltage is higher than 13 volts when idling.
What are the steps for setting the throttle neutral and locked positions?
The steps for setting the throttle neutral and locked positions are: turn the ignition on for two seconds without starting the engine and then turn off for 10 seconds, repeat this procedure two times. Next, with the throttle pedal released, turn on the ignition without starting the engine and wait for three seconds, fully press and release the accelerator pedal five times within five seconds. With the ignition still on and the engine off, wait seven seconds, then fully depress the accelerator pedal for approximately twenty seconds until the malfunction indication lamp has changed from flashing to constant.
What should be done if the relearn procedure for the electronic throttle body was not successful?
If the relearn procedure was not successful, the entire procedure should be repeated again.