Some 2010-2012 F-150 vehicles built at the Dearborn Truck Plant and built on or before 12/1/2011 may exhibit an intermittent operation of the driver and/or passenger front door speaker(s). This may be due to a poor pin connection at connector(s) C21 9 and/or C237, or a faulty door speaker.
ISSUE Some 2010-2012 F-150 vehicles built at the Dearborn Truck Plant and built on or before 12/1/2011 may exhibit an intermittent operation of the driver and/or passenger front door speaker(s). This may be due to a poor pin connection at connector(s) C21 9 and/or C237, or a faulty door speaker. Service Bulletin # 12-11-4 Date: 121115 Audio System - Front Door Speakers Operate Intermittently TSB 12-11-4 11/15/12 FRONT DOOR SPEAKERS - INTERMITTENT OPERATION - DEARBORN TRUCK PLANT - BUILT ON OR BEFORE 12/11/2011 FORD: 2010-2012 F-150 The article supersedes TSB 12-10-18 to update the Part List. 2010 Ford Truck F 150 4WD V8-4.6L VIN 8 2 ACTION Follow the Service Procedure steps to correct the condition. SERVICE PROCEDURE 1. Disconnect the connector C21 9 or C237 located at the lower A-pillar(s). 2. Inspect cavities 1 and 2 on the female side of connector C219 or C237 for terminal pins not seated. Refer to Wiring Diagram Cell 150-1 for c...