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

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the negative battery terminal to prevent electrical shorts.
• Ensure the vehicle is on a level surface and securely supported.

2. Inspect and Replace Transmission Fluid

• Check fluid level:
  • Remove the transmission dipstick and wipe it clean.
  • Reinsert and remove the dipstick to check the fluid level.
• Replace fluid if necessary:
  • If fluid is low or contaminated, drain the old fluid using a drain pan.
  • Replace with manufacturer-recommended transmission fluid (typically Toyota ATF WS).
  • Refill to the appropriate level as indicated on the dipstick.

3. Inspect and Repair Wiring/Connectors

• Check wiring:
  • Visually inspect the wiring harness leading to the TCM for any fraying, breaks, or corrosion.
  • Use a multimeter to test for continuity and proper voltage at the TCM connectors.
• Repair or replace damaged wiring:
  • Use appropriate gauge wire and connectors to repair any damaged sections.
  • Ensure all connections are tight and free from corrosion.

4. Replace Transmission Control Module (if necessary)

• Remove TCM:
  • Locate the TCM (usually under the dashboard or near the transmission).
  • Disconnect the electrical connectors by releasing the locking mechanisms.
  • Unscrew the TCM from its mounting bracket.
• Install new TCM:
  • Position the new TCM in place and secure it with screws.
  • Reconnect electrical connectors ensuring they click into place.

5. Clear Codes and Test Drive

• Clear codes:
  • Reconnect the negative battery terminal.
  • Use the OBD-II scanner to clear any diagnostic trouble codes.
• Test drive:
  • Drive the vehicle under varied conditions to check for proper transmission operation and to see if the check engine light reappears.