how to diagnose P0700 code on Toyota Camry XV50 (2012-2017)

Solution

1. Preparation

• Gather all necessary tools and parts.
• Disconnect the negative battery terminal to prevent electrical shorts during the repair.
• Ensure the vehicle is on a level surface and securely supported.

2. Transmission Fluid Inspection

• Remove the transmission dipstick and check the fluid level; add the correct type of ATF if low.
• If the fluid appears burnt or contaminated, proceed to drain and replace the transmission fluid and filter.
  • Tools Required: Transmission fluid pump, new ATF, new transmission filter (if applicable).

3. Wiring and Connector Inspection

• Visually inspect the wiring harness leading to the TCM for any frayed wires or loose connectors.
• Use a multimeter to test the continuity of the wires.
• Repair or replace any damaged wiring or connectors found.

4. TCM Testing

• Reconnect the TCM connectors and use a multimeter to measure voltage at the TCM pins as specified in the service manual.
• If voltage readings are outside the specified range, replace the TCM.
  • Tools Required: Multimeter, service manual for pin specifications.

5. TCM Replacement (if necessary)

• If the TCM is faulty, remove it by unbolting it from its mount and disconnecting the wiring harness.
• Install the new TCM, ensuring all connections are secure and the unit is properly bolted in place.
• Reconnect the negative battery terminal.