Liberty 4WD L4-2.8L DSL Turbo VIN 5 (2006)
DIAGNOSTIC TEST
1. CHECK FOR DTCs IN THE BODY CONTROL MODULE (BCM)
NOTE: The driver door ajar switch must be operational for the result of this test to be valid.
Turn the ignition on.
With the scan tool, read BCM DTCs.
Q: Does the scan tool display any Cluster Wake Up Output or Communication DTCs?
YES: Refer to Trouble Code Diagnostic Charts for the applicable diagnostic procedures.
NO: Go To 2
2. CHECK THE KEY IN IGNITION STATUS WITH THE SCAN TOOL
With the scan tool in BCM, select Input Output.
With the scan tool, read the Key In Ignition Status.
Q: Does the scan tool display: Key In Ignition?
YES: Replace and program the BCM.
Perform BODY VERIFICATION TEST - VER 1. See: Powertrain Management/Computers and Control Systems/Testing and
Inspection/Diagnostic Trouble Code Tests and Associated Procedures/Verification Tests/Body Verification Test
NO: Go To 3
3. CHECK FOR AN OPEN IGNITION SWITCH
Back probe the Ignition Switch harness connector with a jumper wire between the (G15) Key-In Ignition Switch Sense circuit and the (Z938)
Ground circuit.
With the scan tool, read the Key In Ignition Status.
Q: Does the scan tool display: Key In Ignition?
YES: Replace the Ignition Switch.
Perform BODY VERIFICATION TEST - VER 1. See: Powertrain Management/Computers and Control Systems/Testing and
Inspection/Diagnostic Trouble Code Tests and Associated Procedures/Verification Tests/Body Verification Test
NO: Go To 4
4. CHECK THE (Z938) GROUND CIRCUIT FOR AN OPEN