how to diagnose P0700 transmission code in Tesla Outback 5th Generation (2015-2019)

Solution

1. Preparation

• Tools Required: OBD-II scanner, socket set, multimeter, torque wrench, transmission fluid.
• Safety Warnings: Disconnect the battery before working on electrical systems. Allow the engine to cool before opening the transmission fluid reservoir.

2. Check and Replace Transmission Fluid

1. Lift the vehicle securely using jack stands.
2. Locate and remove the transmission fluid fill plug.
3. Using a fluid pump, extract the old transmission fluid and assess its condition; replace if dirty or burnt.
4. Refill with the manufacturer-recommended transmission fluid until it reaches the proper level.
5. Reinstall the fill plug and torque it to the manufacturer’s specifications.

3. Repair Wiring and Connections

1. Inspect the wiring harness connected to the transmission for any signs of wear or damage.
2. Use a multimeter to test for continuity in the wiring and check the connectors for proper fit and function.
3. Repair or replace any damaged wiring or connectors found during the inspection.
4. Reconnect the wiring harness securely.

4. Replace the Transmission Control Module (if necessary)

1. If diagnostics indicate a faulty TCM, remove the mounting bolts securing the TCM.
2. Disconnect all electrical connectors from the TCM.
3. Install the new TCM by connecting the electrical connectors and securing it with mounting bolts.
4. Clear the fault codes using the OBD-II scanner and perform any necessary calibration procedures.

5. Test Drive and Monitor

1. After repairs, take the vehicle for a test drive under various conditions to ensure proper transmission function.
2. Monitor for the return of any fault codes using the OBD-II scanner.