how to fix P0700 transmission control system fault Ford Explorer Sixth Generation (2020-present)

Solution

1. Preparation

• Gather necessary tools and parts. Ensure the vehicle is on a level surface and the parking brake is engaged.
• Tools Required: OBD-II scanner, multimeter, socket set, torque wrench, transmission fluid pump (if needed).

2. Check and Replace Transmission Fluid

• Sub-steps:
  • Locate the transmission dipstick or fill port. Remove the dipstick and check the fluid level and condition.
  • If the fluid is low, top it off with the manufacturer-recommended transmission fluid.
  • If the fluid is dark or has a burnt smell, consider a transmission fluid change.
• Tools Required: Transmission fluid, funnel.

3. Inspect and Repair Wiring

• Sub-steps:
  • Disconnect the battery before working on electrical components.
  • Visually inspect the wiring harness leading to the TCM and the transmission for frayed wires or loose connections.
  • Repair or replace any damaged wiring or connectors found during inspection.
• Safety Warning: Ensure the battery is disconnected to prevent electrical short circuits.

4. Replace Transmission Control Module (if necessary)

• Sub-steps:
  • Disconnect the battery.
  • Remove the TCM from its mounting location by unscrewing any bolts and disconnecting the electrical connectors.
  • Install the new TCM by reversing the removal process, ensuring all connections are secure.
  • Reconnect the battery.
• Tools Required: Socket set, screwdriver.

5. Clear Codes and Test Drive

• Sub-steps:
  • Use the OBD-II scanner to clear the P0700 code and any other related codes from the system.
  • Start the vehicle and perform a test drive to ensure normal operation of the transmission.
• Tools Required: OBD-II scanner.