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MERCURY MOUNTAINEER HOW TO
MERCURY MOUNTAINEER CODE

You can check to see if there are any technical service bulletins related to your vehicle and model year by searching at NHTSA. A PCM reflash will correct P2135 on some vehicles. Examine the pigtails that plug into your Mountaineer’s throttle position sensor and make sure that they are not damaged in some way. P2135 is often caused by an open or short in the wiring.

MERCURY MOUNTAINEER HOW TO

It’ll tell you exactly how to test a throttle position sensor. That’s easy to say, but becomes a lot clearer if you can actually see it. If they are out of range, you’ll need to replace the sensor in question. Use a multimeter to see if the voltage coming from the A/B throttle position sensor and accelerator position sensor are within Mercury’s specifications. Checking the wiring harness at the pedal and throttle body would be the easiest thing to check. Of these issues, the PCM is usually the least likely unless there is a TSB (technical service bulletin) for your engine and model year. They are the accelerator pedal position sensor, the throttle position sensor, a wiring issue, or a PCM issue. When your Mountaineer has P2135, there are four main issues that cause it. Mercury Mountaineer: P2135 Causes + Diagnosis Here are the most common symptoms associated with P2135. This saves wear and tear on the vehicle and prolongs engine life. This allows drive by wire to allow for the torque to come in more gradually. The advantage of operating the throttle this way is that with a traditional gas pedal (drive by cable), most of the engine’s torque will be located at the beginning of the throttle, whereas with drive by wire, if you press the throttle down 20%, the computer will give you 20% of the torque. If they don’t agree with one another, P2135 is set.ĭrive by wire throttle systems use a sensor on the gas pedal to transmit the pedal position (accelerator position sensor) to the PCM, which controls the throttle body.

The two throttle position sensor signals need to AGREE with one another AND the accelerator position sensor.

The throttle position sensors (A/B and C/D) confirm the position of the throttle blade and the PCM adjusts the throttle position based on this input.

The accelerator position sensor sends a signal to your Mountaineer’s PCM.

Here’s how this method of operating the throttle works: Which means that it uses sensors and actuators to control the throttle body.

If your Mercury Mountaineer has P2135 it is considered “drive by wire”. P2135 TPS Switch “A/B” Voltage Correlation

MERCURY MOUNTAINEER CODE

P2135 is a generic powertrain code that can affect any make or model of vehicle that has a “drive by wire” throttle system (almost every vehicle made today).