how to diagnose a P0700 code on Ford F-150 12th Generation (2009-2014)

Solution

1. Preparation

• Tools Required: OBD-II scanner, multimeter, transmission fluid dipstick, basic hand tools.
• Safety Warnings: Ensure the vehicle is on a flat surface and securely parked. Engage the parking brake.

2. Fluid Change and Filter Replacement

1. Drain Transmission Fluid:

   • Place a drain pan under the transmission pan.
   • Remove the transmission fluid pan bolts and gently lower the pan to drain the fluid.

2. Replace Transmission Filter:

   • Remove the old transmission filter and install the new filter, ensuring it is seated correctly.

3. Reinstall Transmission Pan:

   • Clean the mating surfaces and apply a new gasket or sealant.
   • Torque the transmission pan bolts to manufacturer specifications (typically around 10-12 ft-lbs).

3. Repair or Replace Wiring/Connectors

1. Inspect and Repair Damaged Wiring:

   • If any wires are damaged, repair them using appropriate techniques (soldering, heat shrink, etc.).

2. Replace Faulty Connectors:

   • If the connectors are corroded or damaged, replace them with OEM parts.

4. TCM Replacement (if necessary)

1. Remove Old TCM:

   • Disconnect the battery and remove the TCM mounting bolts and connectors.

2. Install New TCM:

   • Connect the new TCM, ensuring all connectors are secure and properly seated.

3. Reconnect Battery:

   • Reconnect the battery and clear all codes using the OBD-II scanner.