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Home/Cars/Toyota/Corolla/E140 (2006-2013)/how to fix P0700 code in Toyota Corolla E140 (2006-2013)

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

Toyota Corolla E140 (2006-2013)

Severity: highDifficulty: mediumError Code: P07002-4 hours
3 min read
496 words

⚠️ Safety Warning

This issue requires immediate attention. If you are not experienced with automotive repairs, consult a professional mechanic. Working on critical systems can be dangerous.

Problem Statement

Learn how to diagnose and fix P0700 transmission control system malfunction in Toyota Corolla E140. Step-by-step guide with diagnostic procedures and repair instructions.

Error Code
P0700
Component
Transmission
Repair Time
2-4 hours

Safety Warnings

  • ⚠Disconnect the battery before working on electrical systems.
  • ⚠Allow the engine and transmission to cool down before servicing.

Symptoms

  • •Check engine light illuminated
  • •Erratic shifting or harsh gear changes
  • •Loss of power during acceleration
  • •Transmission slipping
  • •Reduced fuel efficiency

Diagnostic Steps

  1. 1Scan for error codes using an OBD-II scanner to confirm the presence of P0700 and check for additional transmission-related codes.
  2. 2Inspect the transmission fluid level and condition; look for signs of contamination or burning.
  3. 3Visually inspect the wiring and connectors related to the transmission control module for damage or corrosion.
  4. 4Check the TCM for proper operation by performing a continuity test on the associated wiring harness.
  5. 5Inspect the vehicle's battery and alternator to ensure the electrical system is functioning correctly.

Solution

Solution

1. Preparation

  • Gather necessary tools and parts.
  • Ensure the vehicle is on a flat surface.
  • Disconnect the battery to prevent electrical shorts.

2. Check and Replace Transmission Fluid

  • Tools Required: Socket set, fluid pump, transmission fluid.
  • Steps:
    1. Locate the transmission dipstick and remove it to check fluid level.
    2. If fluid is low, add the appropriate transmission fluid as specified in the owner’s manual.
    3. If fluid is burnt or contaminated, proceed to replace the fluid.
    4. Use a fluid pump to drain the old transmission fluid from the pan.
    5. Replace the transmission filter if applicable.

3. Inspect and Replace TCM

  • Tools Required: Socket set, multimeter, new TCM.
  • Steps:
    1. Locate the TCM, usually found near the transmission or under the dashboard.
    2. Unplug the electrical connector from the TCM.
    3. Remove the TCM from its mounting bracket.
    4. Install the new TCM and reconnect the electrical connector.
    5. Secure the TCM in place.

4. Clear Codes and Test Drive

  • Tools Required: OBD-II scanner.
  • Steps:
    1. Reconnect the vehicle’s battery.
    2. Use the OBD-II scanner to clear the P0700 code.
    3. Start the engine and take the vehicle for a test drive to monitor transmission behavior.

Verification

After completing the repair, verify that the issue has been resolved:

  • Test the affected component to ensure it functions correctly
  • Check for any error codes or warning lights
  • Monitor the vehicle for a few days to ensure the issue does not recur

Prevention Tips

To prevent this issue from occurring again:

  • •Follow the manufacturer's recommended maintenance schedule
  • •Address warning signs early before they develop into major issues
  • •Use quality parts and fluids recommended for your vehicle
  • •Keep detailed records of all repairs and maintenance

Tools & Equipment Required

  • OBD-II scanner
  • Socket set
  • Fluid pump
  • Multimeter

Parts Required

  • Transmission fluid
  • Transmission filter (if applicable)
  • New TCM (if necessary)

Additional Information

Error CodeP0700
Component

Transmission

Repair Time

2-4 hours

Difficulty

medium

Severity

high

Tools

4 items

Parts

3 items

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