how to troubleshoot transmission jerking in my Toyota Tacoma N300 (2016-Present)?

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is on a level surface and the engine is cool.
• Disconnect the battery to prevent electrical shorts.

2. Check and Replace Transmission Fluid

• Tools Required: Transmission funnel, drain pan, socket set.
• Sub-steps:
  1. Locate the transmission fluid dipstick and remove it to check fluid level.
  2. If low, remove the drain plug using a socket set and drain the old transmission fluid into a pan.
  3. Replace the drain plug and refill with new transmission fluid (use manufacturer-recommended fluid type, e.g., Toyota Type T-IV or WS).
  4. Run the engine and shift through all gears to circulate fluid, then recheck the level.

3. Inspect and Clean Components

• Tools Required: Wrench set, cleaning supplies.
• Sub-steps:
  1. Inspect the transmission cooler lines for leaks and clean any debris from the cooler.
  2. Remove the TCM connector and inspect for any corrosion or damage; clean with electrical contact cleaner.
  3. Reconnect the TCM securely.

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

• Tools Required: Multimeter, wrench set.
• Sub-steps:
  1. Disconnect the TPS connector.
  2. Use a multimeter to check voltage output while moving the throttle; it should vary smoothly.
  3. If readings are erratic or out of specification, replace the TPS with a new one.