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Home >> Jeep >> 2005 >> Wrangler Rubicon, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 488 (Powertrain Diagnostic Procedures - Gas) >> Diagnostic Information And Procedures >> Sentry Key Immobilizer - Symptoms >> Symptom List: ROLLING CODE FAILURE; VIN MISMATCH >> Diagnostic Procedure

Diagnostic Procedure

WARNING: This page is about a different car, the 2005 Jeep Liberty. However, it is still accessible from the selected car via links, so may be relevant.
ROLLING CODE FAILURE, VIN MISMATCH DIAGNOSTIC TEST REFERENCE

TEST ACTION APPLICABILITY
1 With the DRBIII®, erase the SKIM DTCs.
Turn the ignition off.
Wait 10 seconds.
Turn the ignition on and wait 2 minutes.
With the DRBIII®, read the SKIM DTCs.
Does the DRBIII® display the DTC that was previously erased?
Yes --> Go To 2
No --> Go To 4		 All
2 Turn the ignition on.
With the DRBIII®, select Engine system from the main menu.
Display and record the Vehicle Identification Number.
NOTE: Ensure that a VIN has been programmed into the ECM. If a VIN is not displayed, attempt to program the ECM with the correct vehicle VIN before continuing.

Does the VIN recorded from the ECM match the VIN of the vehicle?
Yes --> Go To 3
No --> Replace and program the Engine Control Module in accordance with the Service Information.
Perform SKIS VERIFICATION .		 All
3 Turn the ignition off.
Replace and program the Sentry Key Immobilizer Module in accordance with the Service Information.
Turn the ignition on.
With the DRBIII®, display and clear all ECM and SKIM DTCs.
Perform 5 ignition key cycles leaving the ignition key on for 90 seconds per cycle.
With the DRBIII®, check for SKIM DTCs.
Does the DRBIII® display the same DTC?
Yes --> Replace and program the Engine Control Module in accordance with the Service Information.
Perform SKIS VERIFICATION .
No --> The repair is complete.
Perform SKIS VERIFICATION .		 All
4 Turn the ignition off.
NOTE: Visually inspect the related wiring harness. Look for any chafed, pierced, pinched, or partially broken wires.
NOTE: Visually inspect the related wiring harness connectors. Look for broken, bent, pushed out, or corroded terminals.
NOTE: Refer to any Technical Service Bulletins (TSBs) that may apply.

Were any problems found?
Yes --> Repair wiring harness/connectors as necessary.
Perform SKIS VERIFICATION .
No --> Test Complete.		 All
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