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.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSJEEP2011WRANGLER RUBICON, STANDARDREPAIR AND DIAGNOSISTRANSMISSIONTRANSMISSION CONTROL SYSTEMS(TRANSMISSION CONTROL MODULE (TCM) - ELECTRICAL DIAGNOSTICS - NAG1 AUTOMATIC TRANSMISSION)DTC TROUBLESHOOTINGU0424-IMPLAUSIBLE DATA RECEIVED FROM HVAC CONTROL MODULEDIAGNOSTIC TEST
2011 Jeep Wrangler Rubicon, Standard
Diagnostic Test
2011 Jeep Wrangler Rubicon, StandardSECTION Diagnostic Test
- CHECK FOR TIPM CAN BUS DTCS
- With the scan tool, read TIPM DTCs.
Are there any TIPM CAN BUS DTCs present?
Yes
- Refer to DIAGNOSIS AND TESTING for diagnostic procedures and other possible causes.
- Refer to STANDARD PROCEDURE and perform NAG1 TRANSMISSION VERIFICATION TEST.
No
- Go To 2.
- With the scan tool, read TIPM DTCs.
- CHECK IF HVAC DTCS ARE PRESENT
- With the scan tool, read HVAC DTCs.
Are there any HVAC DTCs present?
Yes
- Refer to DIAGNOSTIC CODE INDEX and perform the appropriate diagnostic procedure.
- 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 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.
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra 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.