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.
2011 Chrysler 300 Base, GasFACTORY OEM SERVICE PROCEDURE
Diagnostic Test
- CHECK FOR BCM CAN BUS DTCS
- With the scan tool, read BCM DTCs.
Are there any BCM CAN BUS DTCs present?
Yes
- Perform the diagnostic procedure for DTC U0001-CAN C BUS first if it is present. Refer to DIAGNOSIS AND TESTING and perform the appropriate symptom.
- Refer to Standard Procedure and perform the NAG1 TRANSMISSION VERIFICATION TEST.
No
- Go To 2.
- With the scan tool, read BCM DTCs.
- CHECK IF HVAC DTCS ARE PRESENT
- With the scan tool, read HVAC DTCs.
Are there any HVAC DTCs present?
Yes
- Refer to Diagnosis and Testing and perform the appropriate symptom.
- Refer to Standard Procedure and perform the NAG1 TRANSMISSION VERIFICATION TEST.
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 and program the TCM in accordance with the Service Information.
- Refer to Standard Procedure and perform the NAG1 TRANSMISSION VERIFICATION TEST.
- With the scan tool, read HVAC DTCs.
Factory Service Tools
Use the Manual With the Right Hardware
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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.