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Home >> Jeep >> 2005 >> Wrangler Rubicon, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 490 (Powertrain Diagnostic Procedures - Diesel) >> Diagnostic Information And Procedures >> Sentry Key Immobilizer - BUX DSL - 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.
DIAGNOSTIC PROCEDURES - ROLLING CODE FAILURE

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 the correct 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 (TSB) 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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