how to fix P0700 code in Toyota Corolla E140 (2006-2013)

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the negative battery terminal to prevent electrical shorts.
• Allow the vehicle to cool down if recently driven.

2. Check and Replace Transmission Fluid

• Tools Required: Transmission fluid pump, funnel, socket set
• Drain the transmission fluid using a drain pan and remove the drain plug.
• Replace the transmission filter if applicable, ensuring all old gasket material is removed from the transmission pan.
• Reinstall the drain plug and refill the transmission with the correct type of fluid (refer to owner's manual for specifications).

3. Inspect and Repair Wiring/Connectors

• Tools Required: Multimeter, wire stripper/crimper
• Inspect the wiring harness and connectors leading to the TCM for any damage, corrosion, or loose connections.
• If damage is found, repair the wires or replace the connectors as necessary.

4. Replace TCM (if necessary)

• Tools Required: Socket set, screwdriver set
• If the TCM is confirmed faulty, locate it (usually under the dashboard or near the transmission).
• Remove the mounting bolts and disconnect the electrical connectors.
• Install the new TCM by connecting the wiring harness and securing it with the mounting bolts.

5. Clear Codes and Test

• Reconnect the negative battery terminal.
• Use the OBD-II scanner to clear the P0700 code from the memory.
• Take the vehicle for a test drive to confirm that the transmission operates smoothly and the check engine light does not reappear.