how to diagnose P0700 code on my Toyota Camry Seventh Generation (2012-2017)

Solution

1. Preparation

• Gather tools and parts for the repair.
• Disconnect the negative battery terminal to prevent electrical shorts.

2. Fluid Inspection and Replacement

• Fluid Level Check:
  • Remove the transmission dipstick and check the fluid level; top off if necessary with the manufacturer-recommended transmission fluid.
• Fluid Replacement:
  • If the fluid is contaminated, drain the transmission fluid using a drain pan.
  • Remove the transmission filter and replace it with a new one.
  • Refill the transmission with new fluid as per specifications (typically ATF WS for Toyota).

3. TCM Inspection and Replacement

• Remove TCM:
  • Locate the transmission control module (usually near the engine bay or under the dashboard).
  • Disconnect the wiring harness from the TCM.
  • Remove mounting bolts using a socket set.
  • Carefully pull the TCM out.
• Install New TCM:
  • Position the new TCM in place and secure it with bolts.
  • Reconnect the wiring harness ensuring a tight fit.

4. Reconnect Battery and Clear Codes

• Reconnect the negative battery terminal.
• Use the OBD-II scanner to clear the P0700 code from the system.

5. Test Drive

• Start the vehicle and perform a test drive to ensure proper transmission function and that the check engine light does not reappear.