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

Solution

1. Preparation

• Tools Required: OBD-II scanner, multimeter, socket set, fluid catch pan, funnel, torque wrench.
• Ensure the vehicle is parked on a level surface and the engine is off.
• Disconnect the battery to prevent electrical shorts.

2. Inspect & Replace Transmission Fluid

• Sub-steps:
  1. Place a fluid catch pan under the transmission pan.
  2. Remove the transmission pan bolts using a socket set (consult the manual for torque specifications).
  3. Carefully lower the pan to drain the old fluid.
  4. Inspect the pan and filter for debris; replace the filter if necessary.
  5. Clean the transmission pan and gasket surface thoroughly.
  6. Reinstall the pan with a new gasket and torque to specifications.

3. Inspect Wiring and Connectors

• Sub-steps:
  1. Visually inspect the wiring harness and connectors leading to the TCM and transmission solenoids.
  2. Use a multimeter to check for continuity in the wiring.
  3. Repair or replace any damaged wires or connectors as necessary.

4. Replace Transmission Control Module (if necessary)

• Sub-steps:
  1. Locate the TCM, typically found near the transmission or under the dashboard.
  2. Disconnect the battery and remove any covers to access the TCM.
  3. Unplug the TCM connectors and remove the mounting bolts.
  4. Install the new TCM, ensuring all connections are secure.
  5. Reconnect the battery.

5. Refill Transmission Fluid

• Sub-steps:
  1. Use a funnel to refill the transmission with the appropriate type of fluid (consult the owner’s manual for specifications).
  2. Start the engine and allow it to idle for a few minutes; shift through all gears with the brake applied.
  3. Check the fluid level again and top off as necessary.