Follow these instructions to reset the throttle position sensor if you’ve correctly determined that it’s the source of issues with your Toyota. However, if you’re unsure, check over the sections describing how the throttle position sensor functions and what the typical failure symptoms are.
You’ll need either a set of wrenches or a pair of fuse pullers, depending on the approach.
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First Throttle Sequence
Warm up the engine to the ideal operating temperature before moving on to the next stage. To avoid stalling, you can either drive it if it’s safe to do so or leave it to idle while adding gas.
This technique works effectively when the battery has died or you required a jump start and requires no tools.
- Put the ignition key in the lock.
- With the engine off, turn the key to the “On” position. After a brief delay, turn it off.
- Re-do the second action.
- Start the car.
- To release the parking brake.
- Put Drive on the gear lever.
- Wait 5 to 10 minutes.
Second Throttle Sequence
The engine doesn’t need to be warmed up, and neither does the second process, which is identical to the first. It works on Toyota Tacoma models made between 2005 and 2015, but it might also function on other makes and models.
- With the engine off, turn the key to the “On” position.
- Press the gas pedal gradually, hold for three seconds, and then slowly let go. Three times, please.
- Turn the key to the Off position and remove it.
Disconnecting the Battery
The first technique consists of just two easy steps. Locate the car battery by raising the hood. Disconnect the cables from the battery using the proper wrench, then wait a few minutes.
You can now reattach the wires, being careful not to overtighten and damage the clamps. Similar to a smartphone or laptop, the procedure provides the electronic device adequate time to completely discharge before rebooting.
Resetting the Fuse
Although it happens infrequently, sometimes replacing the fuse with the original one will resolve TPS problems. You will need the owner’s manual to locate the fuse box because it is type-dependent.
Once you have access to it, use fuse pullers to remove the matching fuse, consult the manual once more to make sure it is in good shape, and then plug it back in.
How is a throttle position sensor reset?
Removing the engine control module fuse or unplugging the negative connection from the battery for up to five minutes will quickly reset your throttle position sensor.
If TPS is not calibrated, what happens?
Your TPS won’t be able to precisely determine the position of the sensor if it is malfunctioning or out of calibration. This will create a number of symptoms, all of which are brought on by the fact that the ECM is feeding the cylinders with the incorrect air/fuel ratio as a result of the defective sensor.
It’s crucial to have a malfunctioning TPS calibrated or replaced as soon as you can if you observe any of the warning indications. Long-term driving with a damaged TPS could result in even more significant problems and a higher repair expense.
It could be wise to check your TPS if you experience some of these signs while driving:
Check Engine Light Is On
The ECM’s responsibility includes keeping track of the data that different sensors send to it and comparing it to the data that other sensors are sending to it in an effort to determine whether anything isn’t functioning properly. The check engine light will come on if the ECM determines that the data it is receiving from the TPS does not correspond to the data it is receiving from the other sensors.
The check engine light can come on for a variety of engine-related problems, therefore having it on by itself definitely does not indicate that the TPS is broken. However, there’s a significant possibility that a malfunctioning TPS is to blame if the check engine light appears along with any of the symptoms listed below.
Does the computer need to be reset after the throttle position sensor is replaced?
I’m here. If your engine’s throttle body has to be replaced and there was a pending code, the code will be cleared. The ECM (computer) would require a hard reset if the code was a permanent hard code. After around 13 minutes, unplug the negative battery cable (-), then reconnect it and make sure it is tight. As it enters a learn cycle, the engine light will turn off and all codes will be cleared. Unless it is causing several sensors to activate codes, the check engine light will stay off if the issue has been resolved, but if it has not, it will turn back on after 10 starts or three days of driving. Seek out a specialist, like one from Your Mechanic, if you require more help in resetting the ECM.
How can I manually reset my electronic throttle control?
Manually resetting your electronic throttle control can be challenging. Make sure the accelerator pedal is fully depressed before continuing. Then, after waiting ten seconds, turn the ignition on and off. Make that the throttle valve is operating for these 10 seconds by listening for a sound of operation.
How is a throttle position sensor tested?
If you have a multimeter, testing the TPS on your automobile is rather straightforward. Here are the procedures for testing a TPS sensor.
- Track down the throttle body. The housing that is affixed to the engine block will be it. The fuel line will be attached to it. You’ll notice a component with wires leading to the ECU attached to the throttle body. The throttle position sensor is seen here.
- After determining the components, you must locate the power, ground, and signal lines. The reason for this is simpleall cars utilize the same colors. Red cables represent the electricity, while black wires are the ground. The signal wire will be a different hue, such as blue, green, or yellow.
- To measure volts, rotate the multimeter’s dial.
- You must verify the reference voltage. Between the TPS and the ECU, voltage is flowing in this manner. Touch the positive multimeter probe to the positive tab and the negative multimeter probe to the negative wire TPS tab to check it. If everything is functioning properly, the multimeter should read close to 5 volts.
- You should now measure the signal voltage. The signal wire tab should receive the positive probe, and the ground probe should make contact with the automobile frame. Half a volt is a nice voltage.
Do throttle bodies require calibration?
After installing a throttle position sensor, or TPS, you must calibrate it using MEITE.
Make sure the throttle sensor signal input is appropriately plugged and set to “TPS Raw” in the Analog Settings. As you adjust the throttle from fully closed to fully open, the signal on the selected pin should change from roughly zero to five volts. For instructions on how to connect it to the ME line of wire-in ECUs, refer to the Throttle Sensor wiring section. It will be correctly connected and assigned by the Plug-Ins in the base-map that is provided.
How can the RPM of an automobile be reset?
As automobiles age, the idle performance often changes, but fortunately, the adjustment is not too difficult. Finding and rotating the screw on the throttle body will change the idle RPM.
The following steps will show you how to change the idle RPM:
- Open the hood, turn on your car, and let it warm up completely. While the automobile is moving, you will make this change. Be careful not to touch any hot engine components.
- From the air filter to the throttle body, follow the air intake hose. Look for a screw on the throttle body (possibly covered by a plastic cap). If the plastic top is still attached, pry it off.
- Reconnect the electrical connection to the idle air adjustment valves once the idle has been changed to aim for 650 RPM. Turn off your car and lower the hood.
- Locate the electronic connector holding the idle air adjustment valve to the throttle body and detach it.
- To modify the idling, turn the idle screw.
- To raise RPM, spin the screw to the left; to decrease RPM, turn the screw to the right.
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