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 MANUALSJEEP2009COMMANDER LIMITED, 5.7 T, 4WDREPAIR AND DIAGNOSIS (SINGLE PAGE)ACCESSORIES & EQUIPMENTCOMMUNICATION DEVICESCAN COMMUNICATION SYSTEM - NON-DTC DIAGNOSTICS
2009 Jeep Commander Limited, 5.7 T, 4WD
Can Communication System - Non-DTC Diagnostics
2009 Jeep Commander Limited, 5.7 T, 4WDSECTION Can Communication System - Non-DTC Diagnostics
- Diagnosis and Testing
- Both Diagnostic Can C (+) And Diagnostic Can C (-) Circuits Open
- Diagnostic Can C (+) And/Or Diagnostic Can C (-) Circuits High
- Diagnostic Can C (+) Circuit Low
- Diagnostic Can C (-) Circuit Low
- Diagnostic Can C (+) Circuit Open
- Diagnostic Can C (-) Circuit Open
- Diagnostic Can C (+) Shorted To Can C Diagnostic (-)
- No Response From Abs (Antilock Brake Module)
- No Response From AHBM (SMARTBEAM)
- No Response From AHLM (Automatic Headlamp Leveling Module)
- No Response From Amp (Amplifier)
- No Response From CCN (Cluster)
- No Response From DDM (Driver Door Module)
- No Response From ECM (Engine Control Module)
- No Response From ESM (Shift Lever Assembly)
- No Response From FCM (Front Control Module)
- No Response From FDCM (Final Drive Control Module)
- No Response From HFM (Hands Free Module)
- No Response From HSM (Heated Seat Module)
- No Response From HVAC (A/C Heater Control - ATC Only)
- No Response From ITM (Intrusion Transceiver Module)
- No Response From LRSM (Rain Sensor)
- No Response From MSMD (Memory Seat Module)
- No Response From Orc (Occupant Restraint Controller)
- No Response From Pcm (Powertrain Control Module)
- No Response From PDM (Passenger Door Module)
- No Response From PLGM (Power Liftgate Module)
- No Response From PTS (Park Assist Module)
- No Response From Radio
- No Response From SDARV (Satellite Video Module)
- No Response From SCM (Steering Control Module)
- No Response From SUNR (Sunroof Motor/Module)
- No Response From TCM - Nag1
- No Response From TCM (Powertrain Control Module) - NGC
- No Response From VES (Monitor/DVD Media System)
- No Response From Win (Wireless Ignition Node)
- Stored Lost Communication DTCS
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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.