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

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a level surface and set the parking brake.
• Disconnect the battery to prevent electrical shorts.

2. Check and Replace Transmission Fluid

• Tools Required: Transmission pan, funnel, transmission fluid.
• Sub-steps:
  1. Remove the transmission pan if necessary to access the fluid.
  2. Drain the old transmission fluid into a suitable container.
  3. Inspect the fluid for contaminants and metal shavings.
  4. Replace the filter if equipped and clean the pan.
  5. Refill with the recommended transmission fluid type (usually Toyota ATF WS).
  6. Reinstall the transmission pan and torque bolts to manufacturer specifications.

3. Inspect Wiring and Connectors

• Tools Required: Multimeter, screwdriver, wire brush.
• Sub-steps:
  1. Visually inspect the wiring harness and connectors for any signs of damage, wear, or corrosion.
  2. Use a multimeter to test the voltage at the TCM connectors. Ensure proper voltage is present.
  3. Clean any corroded connectors with a wire brush to ensure a good electrical connection.
  4. Replace any damaged wiring or connectors as necessary.

4. Test Transmission Control Module (TCM)

• Tools Required: Multimeter, OBD-II scanner.
• Sub-steps:
  1. With the battery reconnected, use the multimeter to check for ground and power at the TCM.
  2. If the TCM is not functioning correctly, consider reprogramming or replacing it.
  3. If replacing, ensure to program the new module according to manufacturer specifications.

5. Reassemble and Test

• Tools Required: OBD-II scanner.
• Sub-steps:
  1. Reconnect the battery and ensure all tools are removed from the engine bay.
  2. Start the vehicle and allow it to reach operating temperature.
  3. Perform a test drive to ensure proper shifting and operation.
  4. Use the OBD-II scanner to check for any stored codes after the test drive.