2012 Ford Fusion passenger door can not power lock, but can power unlock

Principles of Operation

Power Door Locks — Without Memory

Regardless of the key position, the smart junction box (SJB) is supplied voltage at all times. When the SJB receives a signal from the remote keyless entry (RKE) transmitter, the keyless entry keypad, or the door lock control switches, the SJB supplies a ground signal to the appropriate lock or unlock relay. The ground signal closes the relay which supplies voltage to the door lock actuators. The door lock actuators then actuate to a lock or unlock position.


What type scanner did you use to check for BCM codes ?

Inspection and Verification

Verify the customer concern.
Visually inspect the following for obvious signs of mechanical or electrical damage.


Visual Inspection Chart Mechanical Electrical
Binding linkage
Misaligned door
Battery junction box (BJB) fuse(s):
1 (60A)
2 (60A)
Smart junction box (SJB) fuse 16 (15A)
Door lock control switch
Door latch(es)
Luggage compartment lid latch
Luggage compartment lid release switch
Keyless entry keypad
Remote keyless entry (RKE) transmitter
Circuitry
Driver door module (DDM) (if equipped)
SJB



If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
NOTE: Make sure to use the latest scan tool software release.

If the cause is not visually evident, connect the scan tool to the data link connector (DLC).
NOTE: The vehicle communication module (VCM) LED prove-out confirms power and ground from the DLC are provided to the VCM.

If the scan tool does not communicate with the VCM:
Check the VCM connection to the vehicle.
Check the scan tool connection to the VCM.
Refer to Section 418-00 , No Power To The Scan Tool, to diagnose no communication with the scan tool.
If the scan tool does not communicate with the vehicle:
Verify the ignition key is in the ON position.
Verify the scan tool operation with a known good vehicle.
Refer to Section 418-00 to diagnose no response from the powertrain control module (PCM).
Carry out the network test:
If the scan tool responds with no communication for one or more modules, refer to Section 418-00 .
If the network test passes, retrieve and record the continuous memory DTCs.
Clear the continuous DTCs and carry out the self-test diagnostics for the SJB and the DDM.
If the DTCs retrieved are related to the concern, go to the Smart Junction Box (SJB) Diagnostic Trouble Code (DTC) Index or the Driver Door Module (DDM) Diagnostic Trouble Code (DTC) Index. For all other DTCs, refer to Section 419-10 .
If no DTCs related to the concern are retrieved, GO to Symptom Chart . Principles of Operation Power Door Locks — Without Memory Regardless of the key position, the smart junction box (SJB) is supplied voltage at all times. When the SJB receives a signal from the remote keyless entry (RKE) transmitter, the keyless entry keypad, or the door lock control switches, the SJB supplies a ground signal to the appropriate lock or unlock relay. The ground signal closes the relay which supplies voltage to the door lock actuators. The door lock actuators then actuate to a lock or unlock position. What type scanner did you use to check for BCM codes ? Inspection and Verification Verify the customer concern. Visually inspect the following for obvious signs of mechanical or electrical damage. Visual Inspection Chart Mechanical Electrical Binding linkage Misaligned door Battery junction box (BJB) fuse(s): 1 (60A) 2 (60A) Smart junction box (SJB) fuse 16 (15A) Door lock control switch Door latch(es) Luggage compartment lid latch Luggage compartment lid release switch Keyless entry keypad Remote keyless entry (RKE) transmitter Circuitry Driver door module (DDM) (if equipped) SJB If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step. NOTE: Make sure to use the latest scan tool software release. If the cause is not visually evident, connect the scan tool to the data link connector (DLC). NOTE: The vehicle communication module (VCM) LED prove-out confirms power and ground from the DLC are provided to the VCM. If the scan tool does not communicate with the VCM: Check the VCM connection to the vehicle. Check the scan tool connection to the VCM. Refer to Section 418-00 , No Power To The Scan Tool, to diagnose no communication with the scan tool. If the scan tool does not communicate with the vehicle: Verify the ignition key is in the ON position. Verify the scan tool operation with a known good vehicle. Refer to Section 418-00 to diagnose no response from the powertrain control module (PCM). Carry out the network test: If the scan tool responds with no communication for one or more modules, refer to Section 418-00 . If the network test passes, retrieve and record the continuous memory DTCs. Clear the continuous DTCs and carry out the self-test diagnostics for the SJB and the DDM. If the DTCs retrieved are related to the concern, go to the Smart Junction Box (SJB) Diagnostic Trouble Code (DTC) Index or the Driver Door Module (DDM) Diagnostic Trouble Code (DTC) Index. For all other DTCs, refer to Section 419-10 . If no DTCs related to the concern are retrieved, GO to Symptom Chart .

Read your sample scan report, I might misunderstand the “SCAN”, what I did was an engine code scan.
I guess to get those kind of scan. Have to go to a dealer and pay over $100 to get it.
Before doing that, I’d like to provide more info here.
I did further test yesterday.
- When the door is locked, I press unlock button, I can hear a click and then motor turning inside the door panel, and the door is unlocked.
- when the door is unlocked, I press the lock button, I can hear a click, but nothing after. Door remained unlocked.

Seems like relays are working, the motor turns for unlock but doesn’t for unlock.

Thanks again

Kelvin Read your sample scan report, I might misunderstand the “SCAN”, what I did was an engine code scan. I guess to get those kind of scan. Have to go to a dealer and pay over $100 to get it. Before doing that, I’d like to provide more info here. I did further test yesterday. - When the door is locked, I press unlock button, I can hear a click and then motor turning inside the door panel, and the door is unlocked. - when the door is unlocked, I press the lock button, I can hear a click, but nothing after. Door remained unlocked. Seems like relays are working, the motor turns for unlock but doesn’t for unlock. Thanks again Kelvin