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.
2017 Jeep Wrangler Rubicon, Automatic TransFACTORY OEM SERVICE PROCEDURE
Diagnostic Test
- CHECK IF TIPM CAN BUS DTCS
- With the scan tool, read TIPM DTCs.
Are there any TIPM CAN bus DTCs present?
Yes
- Refer to the TIPM DTC Based Diagnostics and perform the appropriate diagnostic procedure. Refer to DIAGNOSTIC CODE INDEX .
- Perform TRANSMISSION VERIFICATION TEST. Refer to NAG1 TRANSMISSION VERIFICATION TEST .
No
- Go to 2 .
- With the scan tool, read TIPM DTCs.
- CHECK IF SCM DTCS ARE PRESENT
- With the scan tool, read SCM DTCs.
Are there any SCM DTCS present?
Yes
- Refer to the SCM DTC Based Diagnostics and perform the appropriate diagnostic procedure.
- Perform TRANSMISSION VERIFICATION TEST. Refer to NAG1 TRANSMISSION VERIFICATION TEST .
No
- Using the schematics as a guide, check the Transmission Control Module (TCM) connectors and 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.
- Perform TRANSMISSION VERIFICATION TEST. Refer to NAG1 TRANSMISSION VERIFICATION TEST .
- With the scan tool, read SCM DTCs.
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
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.