Actuator Test (Output Test)
An actuator test uses a scan tool to switch components on and off.
What is Actuator Test (Output Test)?
It checks fans and valves. It confirms wiring. It saves diagnosis time. Hearing a valve click or seeing a fan run confirms the control unit, wiring and part work. If nothing happens, a multimeter at the component shows whether the signal arrives. Some tests run components at full output, so keep hands clear of fans and belts. Not every scan tool supports all actuator tests for every make.
How it works
The tool commands the control unit.
Why it matters for your car
Moving parts can be dangerous. Follow safety steps.
Other terms
- 12-volt Socket (Accessory Socket)
- Active Aerodynamics
- Belt Tensioner
- Cavity Wax
- Common Rail Injection
- Coolant Hose (Radiator Hose)
- Engine Code
- Inductive Sensor
- Instrument Cluster
- Lightweight Flywheel
- LPG (Autogas)
- Memory Seats
- MPV (People Carrier, Minivan)
- Propeller Shaft (Prop Shaft)
- READY Indicator (EV And Hybrid)
- Shooting Brake
- Silicone Spray
- Starter Solenoid
- Swirl Marks
- Towing Capacity