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

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 secure it with wheel chocks.

2. Check and Replace Transmission Fluid

• Tools Required: Transmission fluid pump, funnel, drain pan, socket set.
• Remove the transmission pan using a socket set.
• Allow fluid to drain completely into the drain pan.
• Inspect the magnet in the pan for metal shavings; this could indicate internal wear.
• Replace the transmission filter if equipped.
• Reinstall the pan, ensuring a proper seal with a new gasket.
• Refill the transmission with the appropriate type of fluid (usually Toyota ATF WS) using a funnel and pump.

3. Repair or Replace TCM

• Tools Required: Torque wrench, multimeter, socket set.
• Remove the TCM by disconnecting the electrical connectors and unscrewing it from its mount.
• Replace with a new or refurbished TCM if diagnostics indicate failure.
• Reinstall the new TCM and reconnect all electrical plugs securely.

4. Inspect and Repair Wiring

• Tools Required: Multimeter, wire strippers, electrical tape.
• Inspect the wiring harness leading to the TCM and transmission for any damage or corrosion.
• Repair any damaged wires and securely insulate them with electrical tape.

5. Reconnect Battery

• Reconnect the negative battery terminal and ensure it is tight.
• Clear any stored codes from the vehicle’s computer using the OBD-II scanner.