how to fix P0700 code on my Toyota RAV4 Fifth Generation (2019-present)

Solution

1. Preparation

• Gather tools and parts required for the repair. Ensure the vehicle is parked on a level surface with the parking brake engaged.
• Tools Required: OBD-II scanner, socket set, multimeter, torque wrench, fluid pump, transmission fluid.
• Safety Warnings: Disconnect the battery before working on electrical systems.

2. Addressing Transmission Fluid Issues

• Check Fluid Level:
  1. Remove the dipstick from the transmission (if applicable) and wipe it clean.
  2. Reinsert and remove the dipstick again to check the fluid level.
• Change Fluid if Necessary:
  1. If the fluid is low or contaminated, drain the transmission fluid using a fluid pump.
  2. Replace with the manufacturer-recommended transmission fluid (refer to the owner's manual for specifications).
  3. Refill the transmission fluid to the correct level as indicated on the dipstick.

3. Repair or Replace Wiring and Connectors

• Inspect and Repair:
  1. Visually inspect the wiring harness connected to the TCM for fraying or damage.
  2. Clean corroded connectors with electrical contact cleaner.
  3. If necessary, replace damaged wiring or connectors.

4. Test and Replace TCM (if needed)

• Testing TCM:
  1. Use a multimeter to check for proper voltage (typically around 12V) and ground at the TCM connector.
  2. If the TCM is not receiving power or is malfunctioning, it may need to be replaced.
• Replacing TCM:
  1. Disconnect the battery.
  2. Remove the TCM from its mounting location (usually secured with bolts).
  3. Install the new TCM, ensuring all connectors are secure.
  4. Reconnect the battery.