how to fix P0700 code on my Toyota RAV4 XA40 (2013-2018)?

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the negative battery terminal to ensure safety while working on electrical components.

2. Inspect and Replace Transmission Fluid

• Tools Required: Socket set, fluid pump, transmission fluid.
• Instructions:
  1. Remove the transmission drain plug using the socket set and drain old fluid into a suitable container.
  2. Replace the drain plug and tighten to the manufacturer’s torque specifications.
  3. Use a fluid pump to refill the transmission with the correct type of new fluid as specified in the owner’s manual.

3. Inspect and Repair Wiring/Connectors

• Tools Required: Multimeter, wire brush, electrical cleaner.
• Instructions:
  1. Visually inspect all wiring and connectors related to the TCM.
  2. Use a multimeter to check for continuity and proper voltage to the TCM.
  3. Clean any corroded connectors with electrical cleaner and a wire brush, ensuring good contact.

4. Test and Replace TCM (if necessary)

• Tools Required: OBD-II scanner, socket set.
• Instructions:
  1. If previous steps do not resolve the issue, replace the TCM.
  2. Remove the old TCM by unfastening it from its mounting location.
  3. Install the new TCM and secure it in place, reconnecting all wiring harnesses.
  4. Reconnect the negative battery terminal.

5. Clear Codes and Test Drive

• Tools Required: OBD-II scanner.
• Instructions:
  1. Use the OBD-II scanner to clear any stored trouble codes from the vehicle’s computer.
  2. Conduct a test drive to ensure the transmission operates smoothly and the check engine light does not reappear.