B1A27

B1A27-SKREEM PROGRAMMING PERFORMANCE

For a complete wiring diagram REFER to DIAGRAMS/ELECTRICAL .

Theory of Operation


Sentry Key Remote Entry Module (SKREEM) is one of the many functions that is a subset of the Wireless Ignition Node (WIN). SKREEM programming takes place during the fobik programming procedure. The repair of this fault condition is dependant on the programmed status of the fobik attempting to be programmed.


- When Monitored:
When in fobik programming mode and programming is in process, the WIN receives the programmed status of the fobik.

- Set Condition:
In the event the user attempts to program a fobik that is not valid or has already been programmed to a different vehicle, this DTC will be set as active.







Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding.Initial Inspection and Diagnostic Overview


Diagnostic Test


1. ENTER PROGRAMMING MODE AND DETERMINE ACTIVE OR STORED DTC
With the scan tool, use the Program Ignition Keys or Key Fobs feature under Miscellaneous Functions.
Attempt to program the suspect fobik.
Wait one minute, and read active codes.
Is the DTC active or stored?

WIN - ACTIVE DTC


- Go To 2


WIN - STORED DTC


- Perform the THEFT AND SECURITY SYSTEMS INTERMITTENT TEST.Symptom Related Diagnostic Procedures


2. VERIFY THE WIRELESS IGNITION NODE (WIN) HAS BEEN PROPERLY INITIALIZED

NOTE: When diagnosing any Theft or Security system concern, all fobiks must be present

With the scan tool, read the Number of Key/Fobs Programmed under Data Display.
Does the scan tool show 2 or more Key/Fobs Programmed?

Yes


- Go To 3


No


- Program 2 fobiks, then perform the THEFT AND SECURITY SYSTEMS VERIFICATION TEST.Theft and Security System Verification Test


3. CHECK OPERATION OF THE FOBIK IN USE

NOTE: Verify the fobik in use is the fobik causing the DTC to set.

Replace the fobik currently in use.
Using the scan tool, program a new fobik to the WIN.
Use the scan tool and erase all codes in the WIN.
Turn the Ignition Off, and wait 15 seconds before turning the Ignition On.
Wait one minute, and read active codes.
Does the scan tool display this DTC as active?

Yes

NOTE: Technicians must use the scan tool to perform the WIN Programming procedure after a module replacement.
Replace the Wireless Ignition Node.
- Perform the THEFT AND SECURITY SYSTEMS VERIFICATION TEST.Theft and Security System Verification Test


No


- Repair is complete.
- Perform the THEFT AND SECURITY SYSTEMS VERIFICATION TEST.Theft and Security System Verification Test