how to fix P0700 transmission code on my Toyota Corolla E170 (2013-2019)

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the negative battery terminal to ensure safety while working on the electrical system.

2. Inspect Transmission Fluid

• Tools Required: Transmission fluid dipstick, funnel, replacement transmission fluid.
• Check the transmission fluid level using the dipstick. If low, add the appropriate type of transmission fluid (refer to the owner’s manual for specifications).
• If the fluid is dark or has a burnt smell, consider a fluid change.

3. Repair Wiring and Connectors

• Tools Required: Multimeter, wire stripper/crimper.
• Visually inspect all wiring and connectors related to the TCM and transmission for signs of wear or corrosion.
• Use a multimeter to test for continuity and shorts. Repair or replace any damaged wiring or connectors.

4. Replace Transmission Control Module (if necessary)

• Tools Required: Socket set, torque wrench, screwdrivers.
• Locate the TCM (usually under the dashboard or near the transmission).
• Disconnect the electrical connectors and remove the TCM from its mounting.
• Install the new TCM, ensuring to torque bolts to the manufacturer’s specifications.
• Reconnect all electrical connectors securely.

5. Reconnect Battery and Test

• Reconnect the negative battery terminal.
• Clear the codes using the OBD-II scanner.
• Start the engine and conduct a test drive to confirm the repair and ensure no codes return.