how to fix a P0700 code on my Toyota RAV4 Fourth Generation (2013-2018)

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the vehicle's battery to ensure safety during repairs.

2. Check Transmission Fluid

• Remove the transmission dipstick and wipe it clean.
• Reinsert and remove the dipstick again to check the fluid level; add fluid if low.
• If the fluid is dark or smells burnt, consider a transmission fluid change.

3. Inspect Wiring and Connectors

• Visually inspect the wiring harness connected to the TCM for any fraying or damage.
• Disconnect the harness and clean the connectors with electrical contact cleaner.
• Reconnect and ensure a secure fit.

4. Test the Transmission Control Module

• Using a multimeter, check the voltage and ground connections to the TCM.
• If readings are outside manufacturer specifications, replace the TCM.

5. Reconnect Battery and Clear Codes

• Reconnect the battery terminals.
• Use the OBD-II scanner to clear the P0700 code and any other related codes.
• Perform a test drive to ensure the problem is resolved.