how to diagnose Honda Accord 9th Generation (2013-2017) P0700 transmission code

Solution

1. Preparation

• Ensure the vehicle is parked on a level surface with the engine off.
• Gather necessary tools and parts.
• Disconnect the vehicle battery to prevent electrical shock.

2. Inspect and Replace Transmission Fluid

• Sub-steps:
  1. Remove the transmission dipstick and check the fluid level.
  2. If low, add the recommended transmission fluid (Honda ATF-Z1 or compatible).
  3. If fluid is dirty or burnt, drain the old fluid using a drain pan.
  4. Replace with new transmission fluid according to the manufacturer’s specifications (approximately 9-11 quarts depending on the service).
• Tools Required:
  • Drain pan
  • Funnel
  • Socket set

3. Repair or Replace Faulty TCM

• Sub-steps:
  1. Locate the transmission control module (usually found near the transmission).
  2. Disconnect the wiring harness from the TCM.
  3. Remove the TCM by unscrewing any bolts or screws securing it.
  4. Install the new TCM and reconnect the wiring harness, ensuring a secure fit.
  5. Reconnect the vehicle battery.
• Tools Required:
  • Socket set
  • Screwdriver set

4. Clear Codes and Test Drive

• Sub-steps:
  1. Use the OBD-II scanner to clear the P0700 code and any other related codes.
  2. Perform a test drive to ensure the transmission operates smoothly and no codes return.
• Tools Required:
  • OBD-II scanner