how to fix P0700 transmission error code in Toyota Camry XV40 (2007-2011)

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the negative battery terminal to prevent electrical shorts.
• Ensure the vehicle is on a level surface and secure it with jack stands.

2. Check and Change Transmission Fluid

• Sub-steps:
  1. Remove the transmission fluid dipstick and check the fluid level.
  2. If fluid is low, add the correct type of transmission fluid (Toyota ATF WS).
  3. If fluid is discolored or burnt, perform a transmission fluid change.
  4. Drain the old fluid using the drain plug, then replace the drain plug and refill with new fluid.
• Tools Required: Transmission fluid pump, socket set, funnel.

3. Inspect and Repair Wiring

• Sub-steps:
  1. Locate the Transmission Control Module (usually under the dashboard or near the transmission).
  2. Remove the connector and inspect for bent pins or corrosion.
  3. Use electrical cleaner to clean the connectors, and repair any damaged wires.
  4. Reconnect the TCM and ensure it is secured properly.
• Tools Required: Screwdrivers, electrical cleaner.

4. Replace Transmission Control Module (if necessary)

• Sub-steps:
  1. If diagnostics indicate a faulty TCM, remove it by unscrewing mounting bolts.
  2. Disconnect the wiring harness and remove the old module.
  3. Install the new TCM, reconnect the harness, and secure it with bolts.
• Tools Required: Socket set, torque wrench, new TCM.

5. Clear Diagnostic Codes

• Sub-steps:
  1. Reconnect the negative battery terminal.
  2. Use the OBD-II scanner to clear the P0700 code.
• Tools Required: OBD-II scanner.