F 150 Super Crew 2WD V8-5.4L Prop SOHC VIN Z (2003)
General Module: Service and Repair
Central Security Module (Csm)
MODULE - CENTRAL SECURITY MODULE (CSM)
REMOVAL
1. Disconnect the battery ground cable.
2. NOTE: If C274a is disconnected first, an inadvertent IGNTAM alarm event (AL_EVT) will be stored and the alarm will sound when the battery
is connected. The alarm must be disarmed by the remote unlock button or a key in the door lock cylinder to UNLOCK. To avoid this condition,
disconnect (1) C274b before (2) C274a and reconnect (2) C274a before (1) C274b.
Remove the central security module.
1
Disconnect C274b.
2
Disconnect C274a.
3
Remove the nuts.
INSTALLATION
1.
NOTE: To avoid inadvertent alarm activation, reconnect C274a first.
To install, reverse the removal procedure.
-
Check for correct operation.