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 MANUALSJEEP2010GRAND CHEROKEE LIMITED, 5.7 T, 4WDREPAIR AND DIAGNOSISENGINE PERFORMANCEENGINE CONTROL SYSTEMS(FRONT CONTROL MODULE (FCM) - ELECTRICAL DIAGNOSTICS)DTC TROUBLESHOOTINGB2206-CURRENT VIN MISSING/MISMATCHDIAGNOSTIC TEST
2010 Jeep Grand Cherokee Limited, 5.7 T, 4WD
Diagnostic Test
2010 Jeep Grand Cherokee Limited, 5.7 T, 4WDSECTION Diagnostic Test
- CHECK FOR ACTIVE DIAGNOSTIC TROUBLE CODE (DTC)
- With the scan tool, read the active DTCs.
- Cycle the ignition switch from off to on at least 5 times, leaving the ignition on for a minimum of 90 seconds per cycle.
- With the scan tool, read the active DTCs.
Does the scan tool display this DTC as active?
Yes
- Go to step 2
No
- If the DTC is stored, check for an intermittent condition. Visually inspect the related wiring harness connectors. Look for broken, bent, pushed out, or corroded terminals.
- CHECK VIN IN PCM
- With the scan tool compare the VIN that is programmed into the PCM to the VIN on the vehicle.
Does the VIN programmed into the PCM match the vehicles VIN?
Yes
- Inspect the wiring and connectors for damage or shorted circuits. If ok, replace and program the Front Control Module in accordance with the Service Information.
- Perform the BODY VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure
No
- Program the correct VIN in the PCM and retest.
- With the scan tool compare the VIN that is programmed into the PCM to the VIN on the vehicle.
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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.