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 LIMITED, EDG, AUTOMATIC CVTREPAIR AND DIAGNOSIS (SINGLE PAGE)ACCESSORIES & EQUIPMENTCOMMUNICATION DEVICESCAN COMMUNICATION SYSTEM - NON-DTC DIAGNOSTICSDIAGNOSIS AND TESTINGSTORED LOST COMMUNICATION DTC'SNOTES
2009 Jeep Patriot Limited, EDG, Automatic CVT
Stored Lost Communication DTC'S: Notes
2009 Jeep Patriot Limited, EDG, Automatic CVTSECTION Notes
For complete wiring diagrams, refer to:
- SYSTEM WIRING DIAGRAMS for Compass.
- SYSTEM WIRING DIAGRAMS for Patriot.
- When Monitored:
With the ignition on.
Battery voltage between 10 and 16 volts.
IOD fuse installed.
TIPM is configured correctly.
- Set Condition:
Bus messages not received for approximately 2 to 5 seconds.
| Possible Causes |
|---|
| CAN B BUS CIRCUITS OPEN OR SHORTED |
| CAN C BUS CIRCUITS OPEN OR SHORTED |
| DTCS RELATED TO BATTERY VOLTAGE, IGNITION, OR VIN MESSAGES |
| TIPM NOT CONFIGURED CORRECTLY |
| POWER OR GROUND FROM THE REPORTING MODULE |
| MODULE THAT SET THIS DTC |
| PREVIOUS SERVICE PERFORMED WITHIN THE LAST 100 KEY CYCLES (FUSE/RELAYS REMOVED, WIRING SERVICE, BATTERY DISCONNECT) |
| LOW BATTERY/JUMP START CONDITION |
| IOD FUSE WAS REMOVED DURING SHIPPING |
| CHECK FOR RELATED TSB'S |
RENDER: 1.0x
NO RELATED
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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.