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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 PROCEDURE - TAILGATE CYLINDER LOCK SWITCH SHORT TO GROUND

TEST ACTION APPLICABILITY
1 Turn the ignition on.
With the DRBIII®, erase DTCs.
Lock and unlock the tailgate several times from the tailgate cylinder lock switch.
With the DRBIII®, read DTCs.
Does the DRBIII® display TAILGATE CYLINDER LOCK SWITCH SHORT TO GROUND?
Yes --> Go To 2
No --> Problem is intermittent and not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors and repair as necessary.
Perform BODY VERIFICATION TEST - VER 1  .		 All
2 Turn the ignition off.
Disconnect the Body Control Module C2 connector.
Measure the resistance between ground and the Tailgate Cylinder Lock Switch Mux circuit.
Is the resistance below 1000 ohms?
Yes --> Go To 3
No --> Replace the Body Control Module.
Perform BODY VERIFICATION TEST - VER 1  .		 All
3 Turn the ignition off.
Disconnect the Body Control Module C2 connector.
Disconnect the Tailgate Cylinder Lock Switch connector.
Measure the resistance between ground and the Tailgate Cylinder Lock Switch Mux circuit.
Is the resistance below 1000 ohms?
Yes --> Repair the Tailgate Cylinder Lock Switch wire for a short to ground.
Perform BODY VERIFICATION TEST - VER 1  .
No --> Replace the Tailgate Cylinder Lock Switch.
Perform BODY VERIFICATION TEST - VER 1  .		 All
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