Grand Caravan V6-3.3L VIN R (2005)
Power Door Lock Actuator: Testing and Inspection
Any diagnosis of the power lock system should begin with the use of the DRB III (R) diagnostic tool. For information on the use of the DRB III (R).
For complete circuit diagrams, refer to the appropriate wiring information.
Verify battery condition before testing door lock motor(s).
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 faulty switch.
Disconnecting the faulty 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 fused 12 volt power source to the
positive pin of the lock motor and a ground wire to the other pin. To unlock the door reverse the wire connections at the motor pin terminals. If these
results are not obtained, replace the door latch.
