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Home/Cars/Toyota/RAV4/XA40 (2013-2018)/how to troubleshoot a P0700 transmission code in Toyota RAV4 XA40

how to troubleshoot a P0700 transmission code in Toyota RAV4 XA40

Toyota RAV4 XA40 (2013-2018)

Severity: highDifficulty: mediumError Code: P07002-4 hours
4 min read
605 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 troubleshoot and fix P0700 transmission control malfunction in Toyota RAV4 XA40. Step-by-step guide with diagnostic 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 to cool before checking or adding transmission fluid.

Symptoms

  • •Check engine light illuminated
  • •Vehicle may exhibit erratic shifting or harsh transmission behavior
  • •Transmission may enter limp mode, limiting speed and power
  • •Delayed engagement when shifting from park to drive
  • •Poor fuel economy due to transmission inefficiency
  • •Unusual noises from the transmission area

Diagnostic Steps

  1. 1Scan the vehicle’s computer using an OBD-II scanner to confirm the P0700 code and check for any additional transmission-related codes.
  2. 2Inspect the transmission fluid level and condition; check for signs of contamination or burning.
  3. 3Examine the wiring and connectors to the TCM for damage, corrosion, or loose connections.
  4. 4Test the TCM for proper operation using a multimeter to measure voltage and ground signals.
  5. 5Check the transmission range sensor (neutral safety switch) for correct operation by verifying it matches the selected gear position.
  6. 6Inspect the transmission control solenoids and wiring for faults or blockages.

Solution

Solution

1. Preparation

  • Gather necessary tools and parts.
  • Park the vehicle on a level surface and engage the parking brake.
  • Disconnect the battery to ensure safety while working on electrical components.

2. Check Transmission Fluid

  • Remove the transmission dipstick.
  • Wipe it clean, reinsert, and remove to check the fluid level.
  • If low, add the manufacturer-recommended transmission fluid (typically ATF WS for Toyota).
  • If the fluid is dark or smells burnt, consider a transmission fluid change.

3. Inspect Wiring and Connectors

  • Locate the TCM, usually found near the transmission or in the engine compartment.
  • Visually inspect the wiring harness for frayed wires or corrosion.
  • Clean any corroded connectors with electrical contact cleaner and reconnect securely.

4. Test the TCM

  • Reconnect the battery.
  • Use a multimeter to check the voltage at the TCM harness while cycling through gears; refer to the service manual for specific voltage values.
  • Replace the TCM if no voltage or incorrect readings are detected.

5. Replace Transmission Range Sensor

  • Locate the transmission range sensor (usually near the transmission linkage).
  • Disconnect the electrical connector and remove the mounting bolts.
  • Install the new sensor, ensuring it is aligned correctly, and reconnect the harness.

6. Clear Codes and Test Drive

  • Use the OBD-II scanner to clear the P0700 code and any other codes present.
  • Take the vehicle for a test drive to ensure the transmission operates smoothly and the check engine light does not reappear.

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
  • Multimeter
  • Socket set
  • Torque wrench
  • Screwdrivers

Parts Required

  • Transmission fluid (ATF WS)
  • Transmission range sensor (if faulty)
  • TCM (if testing indicates failure)

Additional Information

Error CodeP0700
Component

Transmission

Repair Time

2-4 hours

Difficulty

medium

Severity

high

Tools

5 items

Parts

3 items

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