Active Grille Air Shutter A Supply Voltage Circuit/Open

Common symptoms

What you'll notice

• Inspect the wiring and connectors related to the active grille air shutter control circuit for any damage or loose connections. Repair or replace as necessary.
• Check the active grille air shutter actuator motor for proper operation. Test and replace if deemed faulty.
• Verify the power and ground signals to the active grille air shutter control module. Repair any issues found.
• Reset the vehicle's computer system to clear any stored error codes. This may resolve the issue if it was a temporary glitch.
• If all else fails, consider replacing the active grille air shutter control module itself, as it may be malfunctioning.

Common causes

Most likely first

1. Faulty active grille air shutter A
2. Open or short circuit in the supply voltage circuit
3. Malfunctioning control module
4. Wiring or connector issues in the supply voltage circuit
5. Faulty sensor or sensor signal issues

How to diagnose & fix

Work through it in order

1. Malfunction indicator lamp (MIL) illuminated on the dashboard
2. Engine running at higher temperature than normal
3. Decreased fuel efficiency
4. Engine stalling or hesitation
5. Decreased engine performance