how to diagnose P0700 transmission code on Tesla Outback 4th Generation (2010-2014)

Solution

1. Preparation

• Gather tools: OBD-II scanner, multimeter, socket set, torque wrench, and a fluid pump.
• Ensure the vehicle is parked on a level surface and the engine is off before starting work.

2. Transmission Fluid Inspection

• Sub-step 1: Remove the transmission dipstick (if applicable) and check fluid level.
• Sub-step 2: Inspect fluid color and smell. If it is dark or smells burnt, a fluid change is necessary.
• Sub-step 3: If fluid is contaminated, drain the transmission fluid using a fluid pump.

3. Replace Transmission Fluid

• Sub-step 1: Replace with manufacturer-recommended transmission fluid.
• Sub-step 2: Fill the transmission with the correct amount of fluid, as specified in the vehicle's service manual.
• Sub-step 3: Start the engine and let it run for a few minutes, then recheck the fluid level and adjust if necessary.

4. Inspect Wiring and Connectors

• Sub-step 1: Visually inspect the wiring harness connected to the TCM for frays or breaks.
• Sub-step 2: Disconnect the TCM connector and clean it with electrical contact cleaner.
• Sub-step 3: Reconnect the TCM and ensure it is seated properly.

5. TCM Testing

• Sub-step 1: Set your multimeter to the resistance setting.
• Sub-step 2: Measure the resistance of the TCM according to the specifications in the service manual.
• Sub-step 3: If readings are outside of specified ranges, replace the TCM.