Diagnostic Test

VERIFY THAT THE DIAGNOSTIC TROUBLE CODE (DTC) IS ACTIVE
1. Turn the ignition on.
  NOTE:
  Before continuing, review and check for the following:
  - Review the repair history of the vehicle.
  - Make sure that the vehicle has the correct PCM and WIN installed by verifying the part numbers.
  - With the scan tool, ensure that the PCM and WIN are programmed correctly. Compare the PCM VIN to the WIN VIN and ensure the two VINs match.
2. With the scan tool, record and erase the DTCs.
3. Perform 2 ignition cycles, leaving the ignition switch on for a minimum of one minute per cycle.
4. With the scan tool, read the active DTCs.
  Does the scan tool display; B1A24-KEY NOT PROGRAMMED
  
  Yes
  - Go to step 2
  No
  - Perform the WIN INTERMITTENT TEST. See DTC-Based Diagnostics/NODE, Wireless Ignition (WIN) - Standard Procedure .

ENGINE WILL NOT CRANK

NOTE: When diagnosing any WIN system concern, all the FOBIKS should be present

If this vehicle does not crank, use the table below to determine if the key is functional or not. With the scan tool under Data Display, Bussed Outputs, put the key in each position and check the "Ignition Status". Then with the key in the Run position, check "Valid Skim Key" and "SCREEM Status" reported by the WIN (or WCM). Compare all six readings with the "Good Key" column. If the engine does crank, answer "Yes" to the question below.

BUSSED OUTPUTS	-	-	-	-
Ignition Status	Good Key	Bad Key (Failed)	Wrong Key	New Key (Blank)
Ignition Position = Lock	-------------- or Lock	--------------	--------------	-------------- or Lock
Ignition Position = ACC.	Off/ACC.	--------------	--------------	Off/ACC.
Ignition Position = Run Or ON	Run	Lock	Lock	Run
Ignition Position = Start Engine Off - Trans. in Gear	Start or Run	Lock	Lock	Run
SKREEM Status	Normal Status	Service SKREEM	Invalid Key	Key Not Programmed
Valid Skim Key	Yes/True	No/False	No/False	No/False
-	-	-	-	-
Trouble Code (DTC)	-	B2229, B1A35	B1A6C, B1A25	B1A24

CHECK OPERATION OF THE FOBIK IN USE
NOTE: Verify the FOBIK in use is the FOBIK causing the DTC to set.
1. Using the scan tool, program the FOBIK to the WIN.
2. Use the scan tool and erase all codes in the WIN.
3. Turn the Ignition Off, and wait 15 seconds before turning the Ignition On.
4. Wait one minute, and read active codes.
  Does the scan tool display: B1A24-KEY NOT PROGRAMMED?
  
  Yes
  - Replace the key (FOBIK) and program using the scan tool.
  - Perform the BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure .
  No
  - Repair is complete.
  - Perform the BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure .