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

Solution

1. Preparation

• Gather tools and parts required for repairs.
• Ensure the vehicle is parked on a level surface and the parking brake is engaged.
• Disconnect the battery to prevent electrical shorts.

2. Check and Replace Transmission Fluid

• Sub-steps:
  1. Locate the transmission dipstick; remove it and check the fluid level.
  2. If fluid is low, add the recommended ATF type (Toyota T-IV).
  3. If fluid is dirty or burnt, drain the transmission fluid using a fluid pump.
  4. Replace the fluid with fresh ATF and check for leaks.

3. Inspect and Repair Wiring/Connectors

• Sub-steps:
  1. Visually inspect the wiring harness and connectors leading to the TCM for any signs of wear or damage.
  2. If any wires are frayed or broken, repair them using appropriate wire splicing techniques.
  3. Clean any corrosion on connectors with electrical contact cleaner and ensure a secure connection.

4. Test and Replace Transmission Control Module (if necessary)

• Sub-steps:
  1. Use a multimeter to check for proper voltage at the TCM; refer to the wiring diagram for specifications.
  2. If the TCM is not functioning correctly, remove it by unscrewing the mounting bolts and disconnecting the harness.
  3. Install the new TCM and reconnect the wiring harness.
  4. Secure the module with bolts and reconnect the battery.