how to fix P0700 code in Toyota Corolla E170 (2013-2019)

Solution

1. Preparation

• Gather tools and parts.
• Disconnect the vehicle's battery to ensure safety.
• Tools Required:
  • OBD-II scanner
  • Multimeter
  • Socket set
  • Torque wrench
  • Transmission fluid

2. Inspect and Replace Transmission Fluid

• Sub-steps:
  1. Locate the transmission dipstick and check fluid level. If low, add the recommended transmission fluid.
  2. If fluid is dirty or burnt, drain the transmission fluid using a socket set to remove the drain plug.
  3. Replace the old fluid with new fluid according to manufacturer specifications (typically Toyota ATF WS).
  4. Reinstall the drain plug and torque to the specified value (usually around 30 ft-lbs).

3. Check Wiring and Connectors

• Sub-steps:
  1. Remove the protective cover from the TCM connector.
  2. Visually inspect wiring for frays, corrosion, or loose connections.
  3. Use a multimeter to test continuity in the wires leading to the TCM.
  4. Repair or replace any damaged wires or connectors.

4. Test and Replace the TCM (if necessary)

• Sub-steps:
  1. If all wiring is intact, reconnect the TCM and reconnect the battery.
  2. Use the OBD-II scanner to clear the P0700 code.
  3. Test drive the vehicle to see if the code returns.
  4. If the code persists, replace the TCM with an OEM part, following the manufacturer's installation instructions.