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 MANUALSJEEP2007GRAND CHEROKEE 2WD V6-3.7L VIN KREPAIR AND DIAGNOSISA L L DIAGNOSTIC TROUBLE CODES ( DTC )TESTING AND INSPECTIONC CODE CHARTSC1078
2007 Jeep Grand Cherokee 2WD V6-3.7L VIN K
C1078
2007 Jeep Grand Cherokee 2WD V6-3.7L VIN KSECTION C1078
C1078-TIRE REVOLUTIONS RANGE PERFORMANCE
For a complete wiring diagram, refer to Diagrams/Electrical. Electrical Diagrams
- When Monitored:
Continuously.
- Set Condition:
A comparison between the tire circumference value contained in the EEPROM and the tire circumference value received on the CAN bus. Programmed value for tire size is not within acceptable range.
Diagnostic Test
1. INCORRECT VALUE PROGRAMMED INTO FCM
Verify the correct Tire/wheel information is programmed in the FCM.
Is the correct value programmed in the FCM according to the chart?
Yes
- Test complete.
- Perform ABS VERIFICATION TEST. ABS Verification Test
No
- Program the correct Tire/Wheel information in the FCM.
- Perform ABS VERIFICATION TEST. ABS Verification Test
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.