Active Grille Air Shutter A Control Circuit Range/Performance

Common symptoms

What you'll notice

• Check and clean the air intake system to ensure proper functioning of the active grille air shutter.
• Inspect the wiring and connectors related to the active grille air shutter for any damage or loose connections.
• Replace the faulty active grille air shutter control module if necessary.
• Perform a software update or reprogram the active grille air shutter control module to resolve any software
• related issues.
• If all else fails, replace the entire active grille air shutter assembly.

Common causes

Most likely first

1. Malfunctioning or faulty actuator controlling the grille air shutter
2. Wiring or connector issue in the control circuit of the grille air shutter
3. Problem with the sensor or sensor circuit related to the grille air shutter
4. Faulty control module for the active grille air shutter
5. Issues with the power supply or ground connection for the active grille air shutter system

How to diagnose & fix

Work through it in order

1. Engine misfire or rough idling
2. Decreased fuel efficiency
3. Engine hesitation or stalling
4. Illuminated check engine light
5. Overheating of the engine