how to fix P0700 code on Toyota Corolla E140 (2006-2013)

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the battery to prevent electrical short circuits.

Tools Required:

• OBD-II scanner
• Multimeter
• Socket set
• Torque wrench
• Transmission fluid pump (if needed)

2. Inspect and Replace Transmission Fluid

• Step 1: Remove the transmission fluid dipstick and check the level and condition of the fluid.
• Step 2: If fluid is low or burnt, drain the old transmission fluid using a socket set to remove the drain plug.
• Step 3: Replace with manufacturer-recommended transmission fluid, using a fluid pump if necessary to fill.
• Step 4: Reinsert the dipstick and start the engine, allowing the fluid to circulate before checking the level again.

3. Check and Repair Wiring and Connectors

• Step 1: Visually inspect all wiring and connectors related to the TCM for damage or corrosion.
• Step 2: Clean any corroded connectors with electrical contact cleaner.
• Step 3: Repair or replace any damaged wiring or connectors as necessary.

4. Test and Replace the TCM (if necessary)

• Step 1: Use a multimeter to test the TCM according to the specifications found in the service manual.
• Step 2: If the TCM fails the test, remove it by unscrewing the mounting bolts and disconnecting the electrical connectors.
• Step 3: Install the new TCM and secure it with bolts, reconnect the electrical connectors.

5. Verify Transmission Range Sensor Functionality

• Step 1: Locate the transmission range sensor and check its connector for any damage.
• Step 2: Test the sensor operation using a multimeter to ensure it is functioning correctly.
• Step 3: Replace the sensor if it fails the test.