2007 Wrangler JK Factory Service Manual Not in the contents tree

B1A30-KEY 7 COMMUNICATION ERROR

For a complete wiring diagram Refer to Section 8W.



Possible Causes
 
MULTIPLE KEY OPERATION
 
IGNITION KEY
 
SKREEM
 
INTERMITTENT WIRING HARNESS PROBLEM
 




Diagnostic Test

1. DETERMINING IF DTC IS CURRENT

With the scan tool, read and record the SKREEM DTCs.
With the scan tool, erase the SKREEM DTCs.

NOTE: Perform the following test several times to ensure the DTC is current.


Turn the ignition off.
Wait 10 seconds.
Turn the ignition on.
With the scan tool, read the SKREEM DTCs.

Does the scan tool display the DTC that was previously erased?

Yes


No

2. CHECKING FOR MULTIPLE KEYS


Are there multiple vehicle ignition keys available?

Yes


No

3. MULTIPLE KEY OPERATION

NOTE: Perform the following steps using one of the vehicle ignition keys. When finished, repeat the procedure using each of the other vehicle keys one at a time.


With the scan tool, erase the SKREEM DTCs.
Turn the ignition off.
Wait 10 seconds.
Turn the ignition on.
With the scan tool, read the SKREEM DTCs.

Is the DTC present for all ignition keys?

Yes
  • Replace and program the Sentry Key Remote Entry Module in accordance with the Service Information.
  • Perform SKREEM VERIFICATION TEST.


No
  • Replace the ignition key(s) that cause the SKIM DTC.
  • Perform SKREEM VERIFICATION TEST.

4. REPROGRAM KEY

With the scan tool, attempt to reprogram the ignition key to the SKREEM.
With the scan tool, erase the SKREEM DTCs.
Wait 10 seconds.
Turn the ignition on.
With the scan tool, read the SKREEM DTCs.

Does the DTC set again?

Yes


No

5. PROGRAM NEW IGNITION KEY

Replace the ignition key with a new key.
With the scan tool, program the new ignition key to the SKREEM.
With the scan tool, erase the SKREEM DTCs.
Turn the ignition off.
Wait 10 seconds.
Turn the ignition on.
With the scan tool, read the SKREEM DTCs.

Does the DTC set again?

Yes
  • Replace and program the Sentry Key Remote Entry Module in accordance with the Service Information.
  • Perform SKREEM VERIFICATION TEST.


No
  • Test complete.

6. INTERMITTENT WIRING HARNESS PROBLEM

Turn the ignition off.

NOTE: Check the following items:

  • Visually inspect the related wiring harness. Look for any chafed, pierced, pinched, or partially broken wires.
  • Visually inspect the related wiring harness connectors. Look for broken, bent, pushed out, or corroded terminals.
  • Refer to any Technical Service Bulletins (TSB) that may apply.



Were any problems found?

Yes
  • Repair wiring harness/connectors as necessary.
  • Perform SKREEM VERIFICATION TEST.


No
  • Test Complete.