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	Disconnect the 4P connector (A) from the actuator (B). 
 Terminal side of male terminals
 
	Remove the cover (A), and check the output linkage (B) for smooth movement. 
 
Connect the battery power to the No. 2 terminal and ground to the No. 1 terminal. 
	Check for a clicking sound from the magnetic clutch.  The output linkage should be locked.If the output linkage is not locked, replace the actuator assembly. |  | 
	Check the operation of the actuator motor in each output linkage position according to the table.  You should be able to hear the motor.
| Battery power polarities | Output linkage position |  
| (+) | (-) | FULL CLOSE | MIDDLE POSITION | FULL OPEN |  
| No. 4 Terminal | No. 3 Terminal | The motor runs. | The motor runs. | The motor stops. |  
| No. 3 Terminal | No. 4 Terminal | The motor stops. | The motor runs. | The motor runs. |  
 
         FULL OPENOUTPUT LINKAGEFULL CLOSEMIDDLE POSITION |