why does my Toyota Corolla E170 (2013-2019) jerk when shifting gears

Toyota Corolla E170 (2013-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

554 words

Problem Statement

Learn how to diagnose and fix transmission jerking issues in Toyota Corolla E170 (2013-2019). Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Transmission

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect battery before working on electrical systems.
•Allow engine to cool before opening the transmission fluid pan.

Symptoms

•Jerking or harsh shifting when changing gears
•Delayed engagement when shifting from park to drive or reverse
•Unusual noises during gear shifts (clunking or grinding)
•Fluctuating RPMs during acceleration
•Check engine light illuminated (possibly)

Diagnostic Steps

1
Scan the vehicle's onboard computer using an OBD-II scanner to check for any error codes related to the transmission or engine.
2
Inspect transmission fluid level and condition, ensuring it is at the recommended level and not burnt or contaminated.
3
Check for vacuum leaks in the intake system that could affect engine performance.
4
Examine motor and transmission mounts for wear or damage that may cause movement during shifting.
5
Test the throttle position sensor (TPS) for proper function using a multimeter.
6
Inspect and test the transmission control module (TCM) for any issues or faults.

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
•Multimeter
•Fluid pump
•Torque wrench

Parts Required

•Toyota ATF WS transmission fluid
•Transmission filter and gasket (if changing fluid)
•Throttle position sensor (if faulty)
•Motor/transmission mounts (if worn)

Related Faults

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Diagnostic Steps

1
Scan the vehicle's onboard computer using an OBD-II scanner to check for any error codes related to the transmission or engine.
2
Inspect transmission fluid level and condition, ensuring it is at the recommended level and not burnt or contaminated.
3
Check for vacuum leaks in the intake system that could affect engine performance.
4
Examine motor and transmission mounts for wear or damage that may cause movement during shifting.
5
Test the throttle position sensor (TPS) for proper function using a multimeter.
6
Inspect and test the transmission control module (TCM) for any issues or faults.

Solution

1. Preparation

Gather necessary tools and parts.
Disconnect the battery to avoid electrical shorts.
Allow the vehicle to cool if recently driven.

2. Check and Change Transmission Fluid

Sub-steps:
1. Locate the transmission fluid dipstick and remove it to check fluid level.
2. If low, add the recommended transmission fluid type (Toyota ATF WS) until it reaches the proper level.
3. If fluid is discolored or smells burnt, drain the old fluid using a fluid pump and replace it.
4. Replace the transmission filter if necessary by removing the transmission pan (ensure to replace the gasket too).

3. Inspect and Replace Motor/Transmission Mounts

Sub-steps:
1. Using a socket set, remove the bolts securing the motor/transmission mounts.
2. Inspect mounts for cracks or excessive wear.
3. Replace with new mounts if necessary, torquing bolts to manufacturer specifications.

4. Test and Replace Throttle Position Sensor (if faulty)

Sub-steps:
1. Disconnect the electrical connector from the TPS.
2. Using a multimeter, check the resistance values according to the service manual.
3. If readings are out of specifications, replace the TPS with a new unit.

5. Inspect Transmission Control Module

Sub-steps:
1. Locate the TCM, which is usually found near the transmission.
2. Check connections for corrosion or damage.
3. If no visible issues are found, consider reprogramming or replacing the TCM according to diagnostic results.