Does the key in the door lock cylinder rotate freely while the lever is stationary?
Yes | INSTALL a new door lock cylinder. REFER to: Door Lock Cylinder (501-14 Handles, Locks, Latches and Entry Systems, Removal and Installation). |
|---|---|
No | GO to G4 |
G4 CHECK THE DOOR LOCK CYLINDER LINKAGE CONNECTION
Inspect the door lock cylinder linkage.
Is the door lock cylinder rod and lever disconnected?
Yes | CONNECT the door lock cylinder rod and lever. |
|---|---|
No | INSTALL a new door latch. REFER to: Front Door Latch (501-14 Handles, Locks, Latches and Entry Systems, Removal and Installation). |
G5 CHECK THE LOCK CYLINDER OPERATION AFTER LUBRICATION
Spray a lock lubricant (such as Motorcraft® XL-1) into the lock cylinder opening for a couple of seconds. Operate the door lock cylinder with the key.
Does the door lock and unlock using the door lock cylinder?
Yes | The concern was caused by an insufficiently lubricated lock cylinder. SPRAY a multi-purpose grease (such as Motorcraft® XL-5) into the lock cylinder for a couple seconds to provide long term lubrication. |
|---|---|
No | GO to G6 |
G6 CHECK THE DOOR LOCK CYLINDER FOR BINDING
Remove the door lock cylinder. REFER to: Door Lock Cylinder (501-14 Handles, Locks, Latches and Entry Systems, Removal and Installation). Operate the door lock cylinder with the key.
Does the door lock cylinder rotate freely?
Yes | GO to G7 |
|---|---|
No | INSTALL a new door lock cylinder. REFER to: Door Lock Cylinder (501-14 Handles, Locks, Latches and Entry Systems, Removal and Installation). |
G7 CHECK THE DOOR LOCK CYLINDER LINKAGE
Operate the door lock using the door lock cylinder linkage. Operate the door lock cylinder with the key.
Is the door lock cylinder rod and lever binding, damaged or disconnected?
Yes | REPAIR as necessary. |
|---|---|
No | INSTALL a new door latch. REFER to: Front Door Latch (501-14 Handles, Locks, Latches and Entry Systems, Removal and Installation). |
All Door Locks Are Inoperative
Refer to Wiring Diagrams Cell 117 for schematic and connector information.
Normal Operations and Fault Conditions
REFER to: Handles, Locks, Latches and Entry Systems - System Operation and Component Description (501-14 Handles, Locks, Latches and Entry Systems, Description and Operation).
Possible Cause
Wiring, terminals or connectors BCM
PINPOINT TEST H : ALL DOOR LOCKS ARE INOPERATIVE
NOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.
2016 Mustang workshop publication supplied to Mustang Atlas. Original technical text and illustrations; HTML formatting by Mustang Atlas. Source page numbering is retained for traceability. Follow the configuration, revision, warnings, and cross-references in the material. About this edition.