how to diagnose P0700 code on Honda Pilot Third Generation (2016-present)

Solution

1. Preparation

• Gather tools and ensure the vehicle is on a level surface.
• Disconnect the battery to prevent electrical shorts.
• Tools required: OBD-II scanner, multimeter, socket set, torque wrench.

2. Inspect and Replace Transmission Fluid

• Sub-steps:
  1. Locate the transmission dipstick or drain plug.
  2. If necessary, drain the old fluid into a container. Use a funnel if adding fluid via the dipstick.
  3. Replace the transmission fluid with the manufacturer-recommended type (e.g., Honda ATF DW-1).
  4. Check the fluid level according to the manufacturer’s specifications.

3. Inspect and Repair Wiring and Connectors

• Sub-steps:
  1. Visually inspect the wiring harness and connectors associated with the TCM.
  2. Repair any damaged wires or replace corroded connectors.
  3. Ensure all connections are secure and free of moisture.

4. Test and Replace Transmission Control Solenoids

• Sub-steps:
  1. Remove the transmission pan to access the solenoids.
  2. Disconnect the wiring harness from the solenoids.
  3. Use a multimeter to test each solenoid for proper resistance. Replace any solenoids that are out of spec.
  4. Reinstall the transmission pan with a new gasket, ensuring it is torqued to manufacturer specifications.

5. Reconnect Battery and Clear Codes

• Sub-steps:
  1. Reconnect the battery terminals.
  2. Use the OBD-II scanner to clear any existing trouble codes.
  3. Perform a test drive to ensure that the issue has been resolved.