how to fix P0700 code on my Toyota RAV4 Fourth Generation (2013-2018)

Solution

1. Preparation

• Gather necessary tools: OBD-II scanner, multimeter, socket set, torque wrench, transmission fluid.
• Ensure the vehicle is parked on a level surface and the engine is off before starting work.

2. Check Transmission Fluid

• Sub-steps:
  1. Locate the transmission dipstick (if equipped); otherwise, access the transmission fill plug.
  2. Remove the dipstick or fill plug and check fluid level; add fluid if low.
  3. Inspect the fluid for color and smell; if it is burnt or dirty, proceed to replace it.
• Tools Required: Funnel for adding fluid.

3. Inspect Wiring and Connectors

• Sub-steps:
  1. Visually inspect the wiring harness connecting the TCM to the ECM for any signs of damage.
  2. Disconnect the connectors and clean them with electrical contact cleaner.
  3. Reconnect and secure the wiring harness.
• Tools Required: Electrical contact cleaner, socket set for connector removal.

4. Test the Transmission Control Module

• Sub-steps:
  1. Disconnect the TCM from the vehicle.
  2. Use a multimeter to check for proper voltage at the TCM connector pins as per the service manual specifications.
  3. If the readings are out of range, replace the TCM.
• Tools Required: Multimeter.

5. Replace Transmission Fluid (if necessary)

• Sub-steps:
  1. Lift the vehicle and secure it on jack stands.
  2. Remove the transmission drain plug and allow fluid to drain completely.
  3. Replace the drain plug and torque it to the manufacturer’s specifications.
  4. Refill the transmission with the appropriate type and amount of fluid.
• Tools Required: Torque wrench, socket set, fluid pump.

Note: Ensure to consult the vehicle’s service manual for the correct type of transmission fluid.