why does my Toyota Camry XV50 (2012-2017) have a check engine light with code P0700

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a level surface and the engine is off.
• Disconnect the negative battery terminal to prevent electrical shorts.

2. Check Transmission Fluid

• Tools Required: Transmission dipstick, funnel
• Remove the transmission dipstick and check the fluid level; add the correct type of ATF if low.
• Inspect fluid color and smell; if burnt or contaminated, consider a fluid change.

3. Inspect Wiring and Connectors

• Tools Required: Multimeter, basic hand tools
• Examine the wiring harness connected to the TCM and transmission. Look for frayed wires or loose connections.
• Use a multimeter to check for continuity in the wiring.

4. Test Transmission Control Module (TCM)

• Tools Required: OBD-II scanner, multimeter
• Using the OBD-II scanner, check for any stored codes specific to the TCM.
• If necessary, remove the TCM from its mounting location and visually inspect it for damage or corrosion.

5. Test Transmission Solenoids

• Tools Required: Multimeter, socket set
• Locate and remove the transmission solenoids.
• Test them with a multimeter to ensure they are within manufacturer specifications.

6. Reassemble and Reconnect

• Reinstall any components removed during inspection or testing.
• Reconnect the negative battery terminal.