Power Door Lock Actuator: Testing and Inspection

DOOR LOCK MOTOR INSPECTION

DOOR OPEN DETECTION SWITCH INSPECTION
INSPECT DOOR LOCK MOTOR CONTINUITY




(a) Connect the positive (+) lead from the battery to terminal 2 and the negative (-) lead to terminal 4.
Check that the door lock link moves to UNLOCK position.





(b) Change the polarity, and check that the door lock link moves to LOCK position.

If operation is not as specified. replace the door lock assembly.


PTC THERMISTOR OPERATION
INSPECTION USING AN AMMETER




(a) Connect the positive (+) lead from the battery to terminal 2.
(b) Connect the positive (+) lead from the ammeter to terminal 4 and the negative (-) lead to battery negative (-) terminal.
Check that the current changes from approximately 3.2 ampere to less than 0.5 ampere with 20 to 70 seconds.
(c) Disconnect the leads from terminals.





(d) Approximately 60 seconds later, connect the positive (+) lead from the battery to terminal 4 and the negative (-) lead to terminal 2.
Check that the door lock moves to LOCK position.

If operation is not as specified, replace the door lock assembly.


INSPECTION USING AN AMMETER WITH A CURRENT MEASURING PROBE




(a) Connect the positive (+) lead from the battery to terminal 2 and the negative (-) lead to terminal 4.
(b) Attach a current-measuring probe to either the positive (+) lead or the negative (-) lead.
Check that the current changes from approximately 3.2 ampere to less than 0.5 ampere within 20 to 70 seconds.

(c) Disconnect the leads from terminals.





(d) Approximately 60 seconds later, reverse the polarity and check that the door lock moves to LOCK position.

If operation is not as specified. replace the door lock assembly.