how to fix P0700 code on Toyota RAV4 XA50 (2019-2024)

Solution

1. Preparation

• Gather tools and parts needed for repair.
• Disconnect the negative battery terminal to ensure safety.

2. Inspect and Replace Transmission Fluid

• Sub-steps:
  1. Raise the vehicle using jack stands and secure it.
  2. Locate the transmission fluid fill and drain plugs.
  3. Remove the drain plug using a socket wrench and allow the fluid to drain completely.
  4. Inspect the drained fluid for metal shavings or burnt odor, indicating internal damage.
  5. Replace the drain plug with a new washer and torque according to manufacturer specifications (usually around 30 ft-lbs).
  6. Refill the transmission with the recommended fluid through the fill plug, using a funnel. Refer to the owner’s manual for the correct fluid type and capacity.

3. Inspect Wiring and Connectors

• Sub-steps:
  1. Remove the necessary panels to access the TCM wiring harness.
  2. Visually inspect the wiring for any frays or breaks.
  3. Disconnect the TCM connector and clean the terminals with electrical contact cleaner.
  4. Reconnect the wiring harness ensuring a secure fit.

4. Replace Transmission Control Module (if necessary)

• Sub-steps:
  1. If the P0700 code persists after the previous steps, remove the TCM.
  2. Disconnect the battery before removal to prevent electrical shock.
  3. Unplug the connectors from the TCM and remove the mounting bolts.
  4. Install the new TCM by reversing the removal steps and ensuring all connectors are tight.
  5. Reconnect the negative battery terminal.