OEM Ford Excursion Air Bag Control Module

Ford Excursion Air Bag Control Module Parts and Q&A

• Control Module
  5C3Z-14B321-AA
  Q: Is the Orientation of the Air Bag Control Module Critical for Proper Supplemental Restraint System (SRS) Operation on Ford Excursion?

  A:

  Proper functioning of the air bag supplemental restraint system (SRS) depends on a correct orientation of the restraints control module (RCM). After any collision damaging the center tunnel area of an SRS-equipped vehicle you must examine the mounting and bracket for any deformation. The RCM requires replacement in all cases and you need to restore the mounting area. After a collision you need to check vehicle sensors due to their importance regarding stance orientation to verify that all SRS components are correctly positioned following any replacement of damaged parts detected in the mounting bracket or wiring pigtail. The repair of SRS vehicles demands safety glasses as protective eyewear together with the avoidance of memory saver tools to prevent bodily harm. Electronic control units respond negatively to electrical static charges because they expose themselves to breaking damage. The RCM fuse removal will activate the air bag warning lamp during ignition unless a problem exists in the SRS system. Before the vehicle release the SRS needs to have its full functionality checked with no detectable faults. The repair process follows replacement procedures since part replacement needs confirmation through reinstallation of the original assembly followed by recall of diagnostic steps. The removal process of RCM requires system depowering followed by pulling out to free retaining clips before removing the RCM cover. Disconnection of the RCM starts with removing the electrical connector locking clip followed by disconnecting its electrical components until the retaining screw is securely removed. Move on to RCM module elimination after you detach the retaining screws. Position the RCM correctly and secure the bolts before checking that the installed RCM retaining bolts reach the right torque value for system operation. Installation of the RCM begins when you fasten the bolt then connect the electrical connector and activate the locking clip. The system receives power while the RCM cover remains installed before skipping the proving process. A diagnostic tool should be used to configure any new RCM because improper setup might create faulty DTCs. The SRS proof-out sequence starts by turning the ignition key to OFF then waiting 10 seconds before resetting the key to ON position to monitor the air bag indicator. This indicator should brighten for six seconds then extinguish. Air bag indicator behavior during a check-up depends on system faults since an active fault might result in a missing indicator illumination and might instead cause it to permanenetly light up or blink. Use diagnostic equipment to delete any lasting DTCs that exist in the RCM system.
• Control Module
  YC3Z-14B321-AA
  Q: How to service the Air Bag Control Module safely and effectively on Ford Excursion?

  A:

  The first safety step before servicing the Air Bag Control Module involves removing back up power sources to prevent unintentional deployment and then disconnecting the battery ground cable while waiting for one minute followed by disconnecting any auxiliary batteries and power sources when applicable. Electronic modules are vulnerable to static charges therefore always exercise caution regarding static electricity. Service only happens through part replacement because replacing a new part with no fix requires returning the original element for repeated testing. Start the replacement process by disconnecting the battery ground cable followed by removing the cover of the air bag Electronic Crash Sensor (ECS) module and then disconnecting the ECS module through the removal of its electrical locking clip and connector as well as the ECS retaining screw. The ECS module removal requires getting rid of its retaining screws. Installing the ECS module requires proper specification torque on retaining screws to ensure system functionality. During installation reverse the removal procedures while only performing repairs by part replacement and repeat the diagnostic procedure in case the new part fails to fix the issue.