why is my cruise control not working in my Toyota Corolla E170 (2013-2019)

Toyota Corolla E170 (2013-2019)

Error Codes

1-3 hours

Time

medium

Difficulty

medium

Severity

4 min read

635 words

Problem Statement

Learn how to diagnose and fix cruise control issues in Toyota Corolla E170 (2013-2019). Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

Affected Component

Electrical

Estimated Time

1-3 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical systems.
•Allow the engine to cool before performing repairs in the engine compartment.

Symptoms

•Cruise control indicator light is not illuminated on the dashboard
•Inability to set or engage cruise control
•Cruise control disengages unexpectedly while driving
•Engine speed fluctuates when attempting to engage cruise control
•Check engine light may be illuminated

Diagnostic Steps

1
Check the cruise control switch for proper operation by pressing it and observing for any response.
2
Use an OBD-II scanner to scan for any error codes that may indicate issues with the throttle position sensor or other related systems.
3
Inspect the brake pedal switch to ensure it is functioning correctly and not sending false signals to disengage cruise control.
4
Check the vehicle's fuses related to the cruise control system to see if any are blown.
5
Verify the condition of the throttle position sensor and its connections for any damage or corrosion.
6
Examine the speed sensor output to confirm it is sending proper signals to the cruise control module.

Solution

💡 Expert Tip

For complex repairs like this, consider taking photos at each step. This helps if you need to reverse a step or consult with a mechanic. Also, keep all removed parts organized - you may need to reference them during reassembly.

Verification

After completing the repair, verify that the issue has been resolved:

✓Test the affected component to ensure it functions correctly
✓Check for any error codes or warning lights
✓Monitor the vehicle for a few days to ensure the issue does not recur

Prevention Tips

To prevent this issue from occurring again:

•Follow the manufacturer's recommended maintenance schedule
•Address warning signs early before they develop into major issues
•Use quality parts and fluids recommended for your vehicle
•Keep detailed records of all repairs and maintenance

Tools & Equipment Required

•OBD-II scanner
•Socket set
•Screwdrivers
•Multimeter

Parts Required

•Cruise control switch
•Brake pedal switch
•Throttle position sensor
•Speed sensor
•Fuses

Related Faults

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Diagnostic Steps

1
Check the cruise control switch for proper operation by pressing it and observing for any response.
2
Use an OBD-II scanner to scan for any error codes that may indicate issues with the throttle position sensor or other related systems.
3
Inspect the brake pedal switch to ensure it is functioning correctly and not sending false signals to disengage cruise control.
4
Check the vehicle's fuses related to the cruise control system to see if any are blown.
5
Verify the condition of the throttle position sensor and its connections for any damage or corrosion.
6
Examine the speed sensor output to confirm it is sending proper signals to the cruise control module.

Solution

1. Preparation

Gather necessary tools and parts.
Disconnect the negative battery terminal to ensure safety during the repair.

2. Check and Replace the Cruise Control Switch

Inspect the cruise control switch on the steering wheel for signs of wear or damage.
If defective:
1. Remove the steering wheel cover (using a socket set).
2. Disconnect the electrical connector from the cruise control switch.
3. Replace the faulty switch with a new one.
4. Reassemble the steering wheel cover and reconnect the battery.

3. Inspect and Replace the Brake Pedal Switch

If the switch is malfunctioning:
1. Locate the brake pedal switch under the dashboard.
2. Disconnect the electrical connector from the switch.
3. Remove the switch from its mounting bracket.
4. Install the new brake pedal switch and reconnect the electrical connector.

4. Check and Replace Fuses

If a fuse is blown:
1. Locate the fuse box (usually under the dashboard or hood).
2. Identify the cruise control fuse (refer to the fuse diagram).
3. Remove the blown fuse and replace it with a new fuse of the same amperage.

5. Inspect and Replace the Throttle Position Sensor

If the throttle position sensor is faulty:
1. Locate the throttle body in the engine compartment.
2. Disconnect the electrical connector from the throttle position sensor.
3. Remove the sensor from the throttle body.
4. Install the new throttle position sensor and reconnect the electrical connector.

6. Verify Speed Sensor Functionality

If the speed sensor is faulty:
1. Locate the speed sensor, usually near the transmission.
2. Disconnect the sensor's electrical connector.
3. Remove the speed sensor and inspect it for damage.
4. Replace with a new speed sensor if necessary.