Toyota Corolla E170 (2013-2019) transmission jerking when shifting, how to troubleshoot?

Toyota Corolla E170 (2013-2019)

Error Codes

3-5 hours

Time

medium

Difficulty

high

Severity

3 min read

571 words

⚠️ Safety Warning

This issue requires immediate attention. If you are not experienced with automotive repairs, consult a professional mechanic. Working on critical systems can be dangerous.

Problem Statement

Learn how to troubleshoot and fix transmission jerking issues in the 2013-2019 Toyota Corolla E170. Step-by-step guide with diagnostic steps and repair instructions.

Affected Component

Transmission

Estimated Time

3-5 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical systems.
•Allow the engine to cool before working on the transmission to avoid burns.

Symptoms

•Jerking or lurching during gear shifts
•Delayed engagement when shifting into drive or reverse
•Unusual noise during shifting (clunking or grinding)
•Fluctuating RPMs while driving
•Check engine light illuminated
•Transmission fluid leaking

Diagnostic Steps

1
Scan the vehicle's onboard diagnostics using an OBD-II scanner for any error codes related to the transmission.
2
Check the transmission fluid level and condition; ensure it is clean and at the proper level.
3
Inspect the transmission fluid for contaminants or burnt odor.
4
Examine the transmission mounts for signs of wear or damage.
5
Test the throttle position sensor (TPS) for proper function using a multimeter.
6
Conduct a visual inspection of the wiring harness connected to the transmission for any signs of damage or loose connections.

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
•Torque wrench
•Multimeter
•Pry bar
•Drain pan

Parts Required

•Transmission fluid (specific to Toyota specifications)
•Transmission filter
•Gasket for transmission pan
•Throttle position sensor (if faulty)
•Transmission mounts (if worn)

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Diagnostic Steps

1
Scan the vehicle's onboard diagnostics using an OBD-II scanner for any error codes related to the transmission.
2
Check the transmission fluid level and condition; ensure it is clean and at the proper level.
3
Inspect the transmission fluid for contaminants or burnt odor.
4
Examine the transmission mounts for signs of wear or damage.
5
Test the throttle position sensor (TPS) for proper function using a multimeter.
6
Conduct a visual inspection of the wiring harness connected to the transmission for any signs of damage or loose connections.

Solution

1. Preparation

Gather necessary tools and parts.
Park the vehicle on a level surface and engage the parking brake.
Disconnect the negative terminal of the battery.

2. Check and Replace Transmission Fluid

Check Fluid Level:
- Remove the transmission dipstick, wipe it clean, reinsert it, and pull it out again to check the level.
- Add the correct type of transmission fluid if low (consult owner’s manual for specifications).
Replace Fluid:
- If the fluid is dark or has a burnt smell, drain the old fluid using a drain pan.
- Remove the transmission pan bolts and carefully drop the pan to access the filter.
- Replace the transmission filter and clean the pan.
- Reinstall the pan with new gaskets and torque bolts to manufacturer specifications.
- Refill with new, clean transmission fluid.

3. Inspect and Replace Transmission Mounts

Inspect Mounts:
- Visually inspect the transmission mounts for cracks or excessive wear.
- Use a pry bar to check for excessive movement in the mounts.
Replace Mounts:
- Remove the bolts securing the damaged mount.
- Install the new mount and torque bolts to specifications.

4. Test Throttle Position Sensor

Testing:
- Disconnect the TPS connector and connect a multimeter to the terminals.
- Check the voltage output while moving the throttle; it should vary smoothly.
- If faulty, replace the TPS with a new unit.

5. Reconnect Battery

Reconnect the negative battery terminal.