Jeep Liberty KJ. Manual — part 264
3.
VERIFY THAT THE DTC IS STILL ACTIVE
NOTE: Obtain the SKIM PIN before proceeding.
Turn the ignition on.
With the scan tool, erase all PCM and SKREEM/SKIM DTCs.
Perform 5 ignition key cycles, leaving the ignition key on for a minimum of 90 seconds per cycle.
With the scan tool, read the SKREEM/SKIM DTCs.
Did this DTC reset?
Yes
>> Replace and program the PCM in accordance with the Service Information.
Perform SKIS VERIFICATION TEST. (Refer to 8 - ELECTRICAL/VEHICLE THEFT SECURITY - STAN-
DARD PROCEDURE).
No
>> Test complete, the conditions that set this DTC are not present at this time.
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VEHICLE THEFT SECURITY - ELECTRICAL DIAGNOSTICS
KJ
SKREEM/SKIM–SERIAL LINK INTERNAL FAULT
For a complete wiring diagram Refer to Section 8W.
•
When Monitored:
With the ignition on.
•
Set Condition:
The SKREEM/SKIM fails an internal J1850 communication self test.
Possible Causes
SKREEM/SKIM INTERNAL DTC FAILURE
Diagnostic Test
1.
VERIFY THAT THE DTC IS ACTIVE
NOTE: This trouble code indicates an internal module fault.
Turn the ignition on.
With the scan tool, record and erase the SKREEM/SKIM DTCs.
Perform 5 ignition key cycles, leaving the ignition key on for a minimum of 90 seconds per cycle.
With the scan tool, read the SKREEM/SKIM DTCs.
Did this DTC reset?
Yes
>> Replace and program the SKREEM/SKIM in accordance with the Service Information.
Perform SKIS VERIFICATION TEST. (Refer to 8 - ELECTRICAL/VEHICLE THEFT SECURITY - STAN-
DARD PROCEDURE).
No
>> Test complete, the conditions that set this DTC are not present at this time.
KJ
VEHICLE THEFT SECURITY - ELECTRICAL DIAGNOSTICS
8Q - 33
SKREEM/SKIM–STOCK OVERFLOW FAILURE
For a complete wiring diagram Refer to Section 8W.
•
When Monitored:
With the ignition on.
•
Set Condition:
The micro-controller has exceeded its stack space limit.
Possible Causes
SKREEM/SKIM INTERNAL DTC FAILURE
Diagnostic Test
1.
VERIFY THAT THE DTC IS ACTIVE
NOTE: This trouble code indicates an internal module fault.
Turn the ignition on.
With the scan tool, record and erase the SKREEM/SKIM DTCs.
Perform 5 ignition key cycles, leaving the ignition key on for a minimum of 90 seconds per cycle.
With the scan tool, read the SKREEM/SKIM DTCs.
Did this DTC reset?
Yes
>> Replace and program the SKREEM/SKIM in accordance with the Service Information.
Perform SKIS VERIFICATION TEST. (Refer to 8 - ELECTRICAL/VEHICLE THEFT SECURITY - STAN-
DARD PROCEDURE).
No
>> Test complete, the conditions that set this DTC are not present at this time.
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VEHICLE THEFT SECURITY - ELECTRICAL DIAGNOSTICS
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SKREEM/SKIM–TRANSPONDER COMMUNICATION FAILURE
For a complete wiring diagram Refer to Section 8W.
•
When Monitored:
At ignition on and during Key Programming Mode.
•
Set Condition:
When SKREEM/SKIM fails to receive a transponder response after 8 consecutive transponder read attempts
within 2.0 seconds.
Possible Causes
IGNITION KEY PROGRAMMING
IGNITION KEY
SKREEM/SKIM
Diagnostic Test
1.
VERIFY THAT THE DTC IS ACTIVE
Turn the ignition on.
With the scan tool, record and erase SKREEM/SKIM DTCs.
NOTE: Perform the following test several times to make sure the DTC is current.
Turn the ignition off.
Wait 10 seconds.
Turn the ignition on.
With the scan tool, read the SKREEM/SKIM DTCs.
Is this DTC active?
Yes
>> Go To 2
No
>> Refer to the Intermittent Condition diagnostic procedure in this Section.
2.
VERIFY IF MULTIPLE IGNITION KEYS EXIST
Are there multiple vehicle ignition keys available?
Yes
>> Go To 3
No
>> Go To 4
3.
CHECK KEY OPERATION
NOTE: Perform the following steps using one of the vehicle ignition keys. When finished, repeat the pro-
cedure using each remaining key, one at a time.
With the scan tool, erase the SKREEM/SKIM DTCs.
Turn the ignition off.
Wait 10 seconds.
Turn the ignition on.
With the scan tool, read the SKREEM/SKIM DTCs.
Is the DTC present for all ignition keys?
Yes
>> Replace and program the SKREEM/SKIM in accordance with the Service Information.
Perform SKIS VERIFICATION TEST. (Refer to 8 - ELECTRICAL/VEHICLE THEFT SECURITY - STAN-
DARD PROCEDURE).
No
>> Replace all ignition keys that cause the DTC to set.
Perform SKIS VERIFICATION TEST. (Refer to 8 - ELECTRICAL/VEHICLE THEFT SECURITY - STAN-
DARD PROCEDURE).
KJ
VEHICLE THEFT SECURITY - ELECTRICAL DIAGNOSTICS
8Q - 35
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