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 MANUALSJEEP2011LIBERTY RENEGADE, PART TIMEREPAIR AND DIAGNOSISTRANSMISSIONTRANSMISSION CONTROL SYSTEMS(TRANSMISSION CONTROL MODULE (TCM) - ELECTRICAL DIAGNOSTICS)DTC TROUBLESHOOTINGU140D-IMPLAUSIBLE WHEEL SPEED SIGNALS RECEIVEDDIAGNOSTIC TEST
2011 Jeep Liberty Renegade, Part Time
Diagnostic Test
2011 Jeep Liberty Renegade, Part TimeSECTION Diagnostic Test
- CHECK FOR TIPM CAN BUS DTCS
- With the scan tool, read TIPM DTCs.
Are there any TIPM CAN BUS DTCs present?
Yes
- for diagnostic procedures and other possible causes. Refer to Diagnosis and Testing .
- Perform NAG1 TRANSMISSION VERIFICATION TEST. Refer to Standard Procedure .
No
- Go to 2.
- With the scan tool, read TIPM DTCs.
- CHECK IF ABS DTCS ARE PRESENT
- With the scan tool, read ABS DTCs.
Are there any ABS DTCs present?
Yes
- Refer to Diagnosis and Testing and perform the diagnostics for the DTCs in the ABS Module.
- Perform NAG1 TRANSMISSION VERIFICATION TEST. Refer to Standard Procedure .
No
- Using the schematics as a guide, check the Transmission Control Module (TCM) terminals for corrosion, damage, or terminal push out. Pay particular attention to all power and ground circuits. If no problems are found, replace the TCM in accordance with the Service Information.
- Perform NAG1 TRANSMISSION VERIFICATION TEST. Refer to Standard Procedure .
- With the scan tool, read ABS 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.