2002 Mitsubishi Eclipse Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2002 Mitsubishi Eclipse and How to Fix Them

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Reviewed by
Aisha
Written by RepairPal Car Genius
Updated January 14, 2025
0%
30% chance it's the
Sensor
0%
25% chance it's the
Control Module
0%
25% chance it's the
Throttle
0%
20% chance it's
Something else
The most common reasons a 2002 Mitsubishi Eclipse cruise control isn't working are failed control module, sensor or switch issues, or throttle actuation problems.
  • Sensor: A faulty or malfunctioning sensor can lead to incorrect readings, causing issues with engine performance or other systems relying on accurate data.
  • Control Module: A faulty control module can lead to erratic vehicle behavior or failure of various electronic systems due to improper signal processing.
  • Throttle: A faulty throttle body or a defective accelerator pedal position sensor may be causing inconsistent throttle response.
Proper diagnosis will determine the exact cause of your symptom, saving you money on unnecessary repairs. The diagnostic experts at RepairPal Certified shops have the right tools and experience to solve any symptom.

How much does it cost to fix a 2002 Mitsubishi Eclipse cruise control isn't working?

Common Repairs

The total repair cost will vary based on the condition of your vehicle and the number of repairs needed to fix your symptom. Proper diagnosis will save you money by finding the exact repairs needed to fix your car right the first time.

When the throttle position sensor fails, the engine's computer tends to overcompensate with fuel, leading black exhaust coming from the tailpipe. There is a strong possibility of engine misfires, and the check engine light will come on.

Throttle position sensors can also develop "dead spots," or certain places along the throttle curve where it doesn't get a reading. When this happens, the above symptoms can occur but then stop when you further press or let off the gas pedal.

When the vehicle speed sensor fails or the wiring harness prevents signal transmission, the speedometer is the first thing that will stop functioning properly. This can be an intermittent issue where the speedometer only works occasionally, the speedometer may cease all function, or the speedometer may read erratically or incorrectly. Also, the traction control and anti lock brake warning lights specific to each vehicle may be illuminated, depending on the design of those systems. You may notice the vehicle hesitate to accelerate, cruise control will not function properly, and the vehicle may not shift properly through all of the gears.

In the event that a wheel speed sensor fails, the ABS, traction control system (TCS) and manufacturer specific stability control system lights will illuminate, informing the driver that the systems are disabled. The vehicle will be more prone to tire slip, and normal driving patterns may need to be adjusted to correct for the loss of computer control. On older vehicle's, the speedometer can be affected, causing illumination of the check engine light as well.

If the cruise control refuses to turn on at all, the actuator could be at fault. Likewise, if the cruise control stays on but does not maintain a consistent speed, the problem could be a bad actuator. In extreme cases, a malfunctioning actuator could cause the throttle to stick and prevent the vehicle from slowing down. These symptoms may point to a bad actuator. They may also point to other problems with the cruise control and related systems.

The cruise control switch can cause complete failure of the cruise control feature, but in a lucky scenario only partial functionality will be lost. This means that the cruise control may come on, but that it will not increase in speed automatically, or the cancel button does not work leading the driver to cancel cruise control with the foot brake. In some vehicles, the cruise control light may illuminate, or a warning message may be displayed due to lack of functionality.

What are the initial diagnostic steps to troubleshoot the non-functional cruise control in a 2002 Mitsubishi Eclipse?

When troubleshooting the non-functional cruise control in a 2002 Mitsubishi Eclipse, it's essential to adopt a systematic diagnostic approach. Begin by checking the fuse associated with the cruise control system, as a blown fuse can often be the simplest issue to resolve. Next, inspect the wiring for any signs of damage, corrosion, or loose connections that could disrupt the system's functionality. Following this, test the cruise control switch to ensure it is operating correctly; checking for continuity can help confirm its status. If your vehicle's cruise control relies on vacuum, examine the vacuum lines for any leaks or damage that might impair performance. Additionally, using a diagnostic scanner to check for error codes can provide valuable insights into underlying issues. Lastly, verify that the brake lights are functioning properly, as a faulty brake light switch can inadvertently disable the cruise control. By methodically following these steps, you can effectively diagnose and address the issues affecting your cruise control system.

What are the common problems that could cause the cruise control to stop working in a 2002 Mitsubishi Eclipse?

When dealing with a malfunctioning cruise control system in a 2002 Mitsubishi Eclipse, it's crucial to understand the common problems that may be at play. One of the first areas to check is the cruise control switch itself; if this switch is faulty, it can hinder the system's ability to engage or disengage as intended. Additionally, a blown fuse can disrupt the electrical flow necessary for the cruise control to operate, making it a simple yet often overlooked issue. Another potential culprit is vacuum leaks within the cruise control system, which can prevent it from maintaining the desired speed. The speed sensor also plays a vital role; if it is defective, it may provide inaccurate speed readings, leading to cruise control failures. Furthermore, the brake light switch should be inspected, as a malfunction here can prevent the cruise control from engaging, given that it is designed to deactivate when the brake pedal is pressed. Lastly, issues with the throttle cable, such as fraying or stretching, can affect the system's ability to maintain a constant speed. By systematically checking these components, DIYers can effectively diagnose and address the cruise control issues in their Mitsubishi Eclipse.

How urgent is it to repair the non-functioning cruise control in a 2002 Mitsubishi Eclipse?

When contemplating the urgency of repairing the non-functioning cruise control in your 2002 Mitsubishi Eclipse, it's essential to weigh the implications of leaving the issue unresolved. While cruise control is primarily a convenience feature, its malfunction can lead to distractions that may compromise your safety on the road. If you find yourself frequently adjusting your speed manually, this could divert your attention from driving, increasing the risk of an accident. Additionally, for those who often embark on long journeys, a functioning cruise control system significantly enhances comfort by allowing for a more relaxed driving experience, reducing fatigue during extended highway travel. Furthermore, if you have plans to sell or trade in your vehicle, ensuring that all features, including cruise control, are operational can positively impact its resale value. Therefore, while it may not be an immediate priority, addressing the cruise control issue sooner rather than later can contribute to a safer, more enjoyable driving experience and preserve the value of your Mitsubishi Eclipse.

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