how to diagnose P0700 code on Ford Explorer Sixth Generation (2020-present)

Solution

1. Preparation

• Gather tools and parts needed for the repair.
• Ensure the vehicle is parked on a level surface and safely secured.
• Disconnect the battery terminals to prevent electrical shorts.

2. Transmission Fluid Change

1. Check Fluid Level:

   • Locate the transmission dipstick (if equipped) and remove it.
   • Wipe clean, reinsert, and remove again to check fluid level.
   • If low, top off with the manufacturer-recommended transmission fluid.

2. Fluid Replacement:

   • Raise the vehicle using a jack and securely support it with jack stands.
   • Place a drain pan underneath the transmission pan.
   • Remove the transmission pan bolts with a socket set, and carefully lower the pan to drain old fluid.
   • Inspect the pan for metal shavings or debris, which may indicate internal problems.
   • Clean the pan and replace the filter if applicable, using a new gasket.
   • Reinstall the pan and torque the bolts to manufacturer specifications (usually around 10-12 ft-lbs).

3. Inspect and Repair Wiring

1. Visual Inspection:

   • Examine the wiring harness connected to the TCM and transmission for damage.
   • Repair or replace any damaged wiring or connectors.

2. Continuity Check:

   • Use a multimeter to check for continuity in the wiring from the TCM to the transmission.
   • Repair any open circuits.

4. TCM Replacement (if necessary)

1. Remove TCM:

   • Locate the TCM, typically found under the dashboard or near the transmission.
   • Disconnect the wiring harness from the TCM.
   • Remove the mounting bolts and take out the TCM.

2. Install New TCM:

   • Position the new TCM in place and secure it with mounting bolts.
   • Reconnect the wiring harness ensuring a snug fit.

5. Reconnect Battery and Test

• Reconnect the battery terminals.
• Start the vehicle and check for any warning lights.
• Perform a test drive to ensure smooth shifting and monitor for any reoccurrence of the P0700 code.