how to fix P0700 transmission trouble code in my Toyota RAV4 XA40 (2013-2018)?

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is on a level surface and safely elevated with jack stands.
• Disconnect the negative battery terminal to prevent electrical shorts.

2. Inspect and Replace Transmission Fluid

• Sub-steps:
  1. Remove the transmission fluid pan using a socket set.
  2. Drain the old transmission fluid into a suitable container.
  3. Inspect the fluid for metal shavings or debris.
  4. Replace the transmission filter if applicable.
  5. Reinstall the fluid pan with a new gasket if necessary.
  6. Refill the transmission with the manufacturer-recommended fluid type (refer to the owner's manual for specifications).

3. Repair or Replace TCM

• Sub-steps:
  1. Locate the Transmission Control Module (TCM), usually found under the dashboard or near the transmission.
  2. Disconnect the wiring harness from the TCM.
  3. Remove the TCM using the appropriate socket or wrench.
  4. If the module is faulty, replace it with a new or refurbished unit.
  5. Reconnect the wiring harness and ensure secure connections.

4. Check Transmission Range Sensor

• Sub-steps:
  1. Locate the transmission range sensor on the transmission housing.
  2. Disconnect the electrical connector from the sensor.
  3. Use a multimeter to test the sensor operation according to the manufacturer's specifications.
  4. Replace the sensor if it’s faulty or out of specification.

5. Reconnect Battery and Clear Codes

• Sub-steps:
  1. Reconnect the negative battery terminal securely.
  2. Use the OBD-II scanner to clear the P0700 code and any other transmission-related codes.