how to fix P0700 transmission code in Toyota Tacoma N300 (2016-Present)

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is on a level surface and secure with wheel chocks.
• Disconnect the battery before starting work.

2. Inspect and Replace Transmission Fluid

• Sub-steps:
  1. Remove the transmission fluid pan using a socket set; clean the pan thoroughly.
  2. Replace the transmission filter (if applicable).
  3. Reinstall the pan with new gasket material and torque to manufacturer specifications (usually around 10-12 ft-lbs).
  4. Fill the transmission with the correct type of fluid (Toyota WS ATF) through the dipstick tube.

3. Check and Repair Wiring and Connectors

• Sub-steps:
  1. Visually inspect all wiring and connectors associated with the TCM for fraying or corrosion.
  2. Clean any corroded connectors with electrical contact cleaner.
  3. Repair or replace any damaged wiring or connectors as necessary.

4. Test and Replace Transmission Control Module (if needed)

• Sub-steps:
  1. If the TCM is suspected to be faulty, disconnect it from the wiring harness.
  2. Use a multimeter to test the TCM for proper voltage and continuity as per service manual specifications.
  3. If faulty, replace the TCM with a new unit and ensure proper programming if required.

5. Replace or Test Transmission Solenoids

• Sub-steps:
  1. Access the transmission solenoids by removing the transmission pan (if not already done).
  2. Disconnect the solenoids and use a multimeter to check resistance against manufacturer specifications.
  3. Replace any solenoids that are out of specification.