how to troubleshoot P0700 transmission code on Volkswagen Tiguan First Generation (2007-2018)

Solution

1. Preparation

• Disconnect the negative battery terminal to ensure safety while working on electrical components.
• Gather necessary tools and parts.

2. Transmission Fluid Inspection

• Tools Required: Transmission fluid dipstick (if applicable), fluid catch pan
• Remove the dipstick and check the fluid level; add fluid if low.
• Inspect the fluid's color and smell; replace it if it appears dark or smells burnt.

3. Wiring and Connector Inspection

• Tools Required: Multimeter, wire brush, dielectric grease
• Check all connectors leading to the TCM; clean any corrosion with a wire brush.
• Use a multimeter to verify that the wiring has no shorts or breaks; repair or replace as necessary.

4. TCM Testing

• Tools Required: Multimeter
• Locate the TCM and check the power and ground circuits.
• If the TCM does not receive the proper voltage, trace the wiring back to the battery and repair as needed.

5. Sensor Inspection

• Tools Required: Multimeter, socket set
• Locate the vehicle speed sensor and transmission input/output speed sensors.
• Use a multimeter to check the resistance and voltage of the sensors; replace any faulty sensors.

6. Transmission Component Check (if necessary)

• Tools Required: Socket set, torque wrench
• If mechanical issues are suspected, remove the transmission pan and inspect for debris or metal shavings.
• Replace worn components such as clutches or bands as identified.