Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSJEEP2009PATRIOT SPORT, 2.4 B, EDG, STANDARDREPAIR AND DIAGNOSISACCESSORIES & EQUIPMENTSEATS(CABIN COMPARTMENT NODE (CCN) - ELECTRICAL DIAGNOSTICS)DTC TROUBLESHOOTINGU0168-LOST COMMUNICATION WITH VEHICLE SECURITY CONTROL MODULE (SKREEM/WCM)DIAGNOSTIC TEST
2009 Jeep Patriot Sport, 2.4 B, EDG, Standard
Diagnostic Test
2009 Jeep Patriot Sport, 2.4 B, EDG, StandardSECTION Diagnostic Test
- VERIFY THE DIAGNOSTIC TROUBLE CODE (DTC) IS ACTIVE NOTE: Make sure the IOD fuse is installed and the battery is fully charged before proceeding.
- Turn the ignition on.
- With the scan tool, read the active Door Module DTCs.
Is this DTC active?
Yes
- Refer to DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Diagnosis and Testing and perform the U0168-Lost Communication with Vehicle Security Control Module (SKREEM/WCM) diagnostic procedure.
No
- Perform the Stored Lost Communication DTCs diagnostic procedure. Refer to Non-DTC Diagnostics/Communication - Diagnosis and Testing .
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.