2003 Dodge Caravan Doors

What is the problem, power lock inoperative? Door ajar light on? If it's the motor check it like this:
DIAGNOSIS AND TESTING - DOOR LOCK MOTOR Verify battery condition before testing door lock motor(s) (Refer to BATTERY - DIAGNOSIS AND TESTING ). To determine which motor is faulty, check each individual door for electrical lock and unlock or disconnect the motor connectors one at a time, while operating the door lock switch. In the event that none of the motors work, the problem may be caused by a shorted motor or a bad switch. Disconnecting the defective motor will allow the others to work. To test an individual door lock motor, disconnect the electrical connector from the motor. To lock the door, connect a 12 volt power source to the positive pin of the lock motor and a ground wire to the other pin. Refer to the appropriate wiring information. The wiring information includes wiring diagrams, proper wire and connector repair procedures, further details on wire harness routing and retention, as well as pin-out and location views for the various wire harness connectors, splices and grounds. To unlock the door reverse the wire connections at the motor pin terminals. If these results are NOT obtained, replace the motor.

Just as I stated above.