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

Solution

1. Preparation

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

2. Inspect Transmission Fluid

• Tools Required: Transmission fluid dipstick, clean rags.
• Check the fluid level using the dipstick; add fluid if low.
• Inspect the fluid for contamination; if dirty or burnt, proceed to replace the fluid.

3. Repair Wiring and Connectors

• Tools Required: Wire strippers/crimpers, electrical tape, multimeter.
• Visually inspect the wiring harness and connectors to the TCM.
• Repair any damaged wires using solder or crimp connectors, and secure with electrical tape.

4. Replace Transmission Range Sensor (if faulty)

• Tools Required: Socket set, torque wrench.
• Locate the transmission range sensor on the transmission.
• Disconnect the wiring harness.
• Remove the bolts securing the sensor and replace it with a new unit.
• Torque the bolts to the manufacturer's specifications.

5. Replace Transmission Control Module (if necessary)

• Tools Required: Socket set, torque wrench.
• Disconnect the battery and locate the TCM.
• Disconnect the wiring harness from the TCM.
• Remove mounting bolts and take out the old TCM.
• Install the new TCM and reconnect the wiring harness.
• Torque bolts to manufacturer specifications.

6. Refill Transmission Fluid

• Tools Required: Funnel, transmission fluid.
• Refill the transmission with manufacturer-recommended fluid through the dipstick tube.
• Start the engine and allow it to reach operating temperature, then check the fluid level again.