how to fix the harsh shifting in my Honda Accord 9th Generation (2013-2017)

Solution

1. Preparation

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

2. Transmission Fluid Change

• Tools Required: Socket set, fluid pump, funnel, transmission fluid (appropriate type for Honda Accord).
• Sub-steps:
  1. Remove the transmission pan using a socket set.
  2. Allow old fluid to drain completely, then clean the pan and magnet.
  3. Replace the transmission filter if applicable, ensuring the new filter is properly seated.
  4. Reinstall the transmission pan with a new gasket and torque to manufacturer specifications.
  5. Refill transmission fluid through the dipstick tube using a funnel until the correct level is achieved (check specifications).

3. Inspect and Replace the Transmission Control Module (if necessary)

• Tools Required: Diagnostic tool for programming, socket set.
• Sub-steps:
  1. After diagnosing the TCM, if replacement is required, disconnect the battery.
  2. Locate and remove the TCM from its mounting bracket.
  3. Install the new TCM, ensuring all connectors are secure.
  4. Reconnect the battery and use the diagnostic tool to program the new TCM as necessary.

4. Adjust Throttle Position Sensor

• Tools Required: Multimeter, socket set.
• Sub-steps:
  1. Remove the TPS from the throttle body.
  2. Using a multimeter, check the resistance and adjust or replace the TPS to ensure proper function.
  3. Reinstall the TPS and secure with bolts.