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

Solution

1. Preparation

• Gather tools and materials required for the repair.
• Ensure the vehicle is parked on a level surface and the engine is turned off.
• Disconnect the battery to prevent electrical shorts.

2. Check Transmission Fluid

• Tools Required: Transmission dipstick, fluid pump.
• Remove the transmission dipstick and check the fluid level. If low, add the manufacturer-recommended transmission fluid (Honda ATF DW-1).
• Inspect the fluid for burnt smell or metal shavings; if the fluid is contaminated, it may need to be replaced.

3. Inspect Wiring and Connectors

• Tools Required: Multimeter, socket set.
• Visually inspect the wiring harness leading to the TCM for frays or damage.
• Use a multimeter to check for continuity in the wiring.
• Clean any corrosion off connectors and ensure they are securely fastened.

4. Test Transmission Control Module

• Tools Required: Multimeter, diagnostic scan tool.
• Follow the manufacturer's service manual to test the TCM’s input and output signals.
• If the TCM is faulty, proceed to replace it.

5. Reassemble and Refill Fluids

• If any components were removed, reinstall them in the reverse order of removal.
• Refill the transmission fluid if it was low or replaced.
• Reconnect the battery and clear any diagnostic trouble codes.