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Power Door Locks Inoperative Diagnostic Instructions • Perform the Diagnostic System Check – Vehicle prior to using this diagnostic procedure. • Review Strategy Based Diagnosis for an overview of the diagnostic approach. • Diagnostic Procedure Instructions provides an overview of each diagnostic category. Diagnostic Fault Information Circuit Switch Side Supply Voltage Relay Door Lock/Unlock Signal Door Latch Control Driver Door Lock Switch Ground Passenger Front Door Lock Switch Ground BCM Ground 1. Door Lock Malfunction 2. Door Lock Switch Malfunction Circuit/System Description The DR LCK fuse supplies battery positive voltage to the body control module BCM for the door lock system. The BCM supplies and monitors a reference voltage to the door lock switch through the door lock switch lock/unlock signal circuit. The door lock switch also receives a constant ground source. If a door lock switch is placed in the lock position, the reference voltage is taken directly to ground and the BCM senses 0.0 volts on the signal circuit. If a door lock switch is placed in the unlock position, the reference voltage is taken to ground through a 1.5k ohm resistor that is internal to the door lock switches and senses approximately 2.9 volts on the signal circuit. This is how the BCM determines what portion of the door lock switch was activated. The BCM, upon receipt of a door lock switch lock or unlock signal, will switch the appropriate door lock actuator control circuits to battery positive voltage. The opposing side of the door lock actuators are connected to ground internally within the BCM through the other door lock actuator control circuit and the doors will lock or unlock appropriately. Vehicles without keyless entry have two internal drivers in the BCM to control the door lock actuators. All door lock and all door unlock. Vehicles equipped with keyless entry have three internal drivers in the BCM. Driver door unlock, passenger door unlock and all door lock. This is done to isolate the driver door lock actuator so it can be unlocked by itself using the keyless entry transmitter.

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1. Remove door latch cover by pulling trim free of retaining clips and sliding trim away from latch. 2. Remove portion of armrest containing door lock switch and window regulator control switch (14529). Trim Panel 3. Remove screw attaching front door trim panel (23942) to front door (20124). 4. Remove two screws located at bottom of front door trim panel. 5. Disconnect the door lock switch (14028) and window regulator control switch electrical connectors. 6. Remove rear view outside mirror mounting hole cover assembly by prying at top and pulling upward to release double-sided clip. 7. Pull front door trim panel from the top to release fasteners from front door. 8. Remove front door trim panel. Disconnect lamp connector. 9. To install, reverse Removal procedure. Replace any bent or damaged fasteners. Body Side Removal and Installation 1. Remove door handle retaining clip by sliding a shop towel between handle and door trim. With tension on the cloth, pull one end of the cloth so it slides between the handle and the door trim. If handle does not come out, reverse direction. 2. Gently pry door latch bezel from door trim. 3. Pull body side trim panel from body side door. 4. To install, reverse Removal procedure. For installation of handle, install clip to handle, then push handle on to shaft to snap in place. Back Removal and Installation 1. Disconnect rear window defroster wires. 2. Remove the liftgate window garnish moulding. Refer to procedure in this section. 3. Remove screws attaching liftgate handle to liftgate and liftgate inside trim panel. 4. Using Rotunda Windshield and Moulding/Trim Removal Kit 107-R0401 or equivalent, pry pushpins retaining liftgate trim from the liftgate. 5. Remove liftgate trim. 6. To install, reverse Removal procedure. Liftgate Door Electrical Connections

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Latch—Door Removal and Installation NOTE: Front door shown, rear door similar. Front door 1. Remove the door lock cylinder; refer to Lock Cylinder—Door. 2. If equipped, remove the power door lock actuator. 1. Disconnect the electrical connector. 2. Drill out the rivet. 3. Disconnect the actuator rod. 4. Remove the actuator. Rear door 3. If equipped, remove the power door lock actuator. For additional information, refer to Actuator—Door, Rear in this section. All doors 4. Remove the door latch remote control. 1. Remove the screws. 2. Disconnect the door latch remote control link from the door latch remote control. 3. Remove the door latch remote control. 5. Disconnect the door latch actuating rod from the door latch. 6. Remove the rear glass run channel. 1. Remove the bolt. 2. Remove the rear glass run channel. 7. Remove the screws and the door latch. 8. Disconnect the door latch push button rod from the door latch. 9. NOTE: Connect the remote control rod, door latch push button rod and lock cylinder rod to the front door latch (21812) before installing the new latch. NOTE: When the battery is disconnected and reconnected, some abnormal drive symptoms may occur while the vehicle relearns its adaptive strategy. The vehicle may need to be driven 16 km (10 mi) or more to relearn the strategy. To install, reverse the removal procedure. ? Use the special tool to install the new rivet.

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Removal 1. Remove the A-pillar trim panel. For additional information, refer to A-Pillar Trim Panel in this section. 2. Reposition the B-pillar trim panels. For additional information, refer to B-Pillar Trim Panel — SuperCab in this section. 3. Remove the driver seat headrest. 4. Open the garment hook screw covers. 5. Remove the garment hook screws and remove the garment hooks. 6. Remove the overhead console. For additional information, refer to Section 501-12. 7. Remove the LH and RH sun visors. Remove the sun visor retainer screws. Reposition headliner and disconnect electrical connector. 8. Remove the sun visor clip screws and remove the sun visor clips. 9. Remove the rear door latch cover screws and remove the rear door latch covers. 10. Remove the headliner pin-type retainers. 11. If equipped, disconnect the mirror electrical connector and the rain sensor. 12. Disconnect the headliner electrical connectors.13. Rotate the front of the headliner towards the driver door. 14. Remove the headliner through the driver door. Installation 1. Position the headliner in the vehicle so that the sun visor and coat hook openings are aligned. 2. Install the LH and RH sun visors. Reposition headliner and connect electrical connector. Install the sun visor retainer screws. 3. Install the sun visor clip and sun visor clip screws. 4. Install the garment hooks and garment hook screws. 5. Close the garment hook screw covers.

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1. Remove the front door trim panel and watershield from the front door. Refer to Section 01-05A or Section 01-05B. 2. Disconnect front door latch actuating rod (22152) from lock cylinder. 3. Remove attaching screws from front door latch remote control and link (21818). Remove front door latch remote control and link from front door. 4. Disconnect front door latch control cylinder rod (22134) from front door latch remote control and link. 5. Disconnect front door latch remote control link. For installation, follow removal procedures in reverse order. Front Door Latch Installation, Aerostar Liftgate, Aerostar Removal and Installation 1. Open liftgate and remove liftgate door trim panel and liftgate handle, if so equipped. 2. Disconnect liftgate latch release rod from control assembly. 3. Remove three latch retaining screws and remove luggage compartment door lock mechanism cover (43243) and latch from liftgate. 4. On vehicles equipped with liftgate ajar warning switch, pull latch slightly away from liftgate and disconnect electrical wire harness from the latch. To install, reverse Steps 1 through 4. Tighten liftgate handle retaining screws to 4-8 Nm (36-70 lb-in). Liftgate Latch, Aerostar