how to check the alternator on my Volkswagen Golf MK7 (2015-2019)

Solution

1. Preparation

• Gather required tools and parts.
• Ensure the vehicle is parked on a flat surface, and the parking brake is engaged.
• Disconnect the negative terminal of the battery for safety.

2. Remove the Alternator Belt

• Sub-steps:
  • Locate the belt tensioner and use a socket wrench to relieve tension on the belt.
  • Slide the belt off the alternator pulley.
• Tools Required: Socket set, belt tensioner tool (if necessary).

3. Remove the Alternator

• Sub-steps:
  • Disconnect the electrical connector from the alternator.
  • Remove the bolts securing the alternator to the engine bracket.
  • Carefully lift the alternator out of its mounting position.
• Tools Required: Socket set, ratchet wrench.

4. Inspect and Test the Alternator

• Sub-steps:
  • Visually inspect the alternator for any physical damage or worn components.
  • Use a multimeter to test the alternator's output by connecting it to the output terminal while the engine is running.
  • If necessary, take the alternator to an auto parts store for bench testing.
• Tools Required: Multimeter.

5. Reinstall the Alternator

• Sub-steps:
  • Position the alternator back into its mounting location.
  • Secure it with the mounting bolts and reconnect the electrical connector.
  • Reinstall the alternator belt, ensuring it is properly seated on all pulleys.
• Tools Required: Socket set.

6. Reconnect the Battery

• Reconnect the negative terminal of the battery and ensure it is tight.