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 MANUALSJEEP2013WRANGLER UNLIMITED RUBICON, AUTOMATIC TRANSREPAIR AND DIAGNOSISRESTRAINTSAIR BAG, SRSOCCUPANT RESTRAINT CONTROLLER (ORC) - DTCS B1C3A TO U1415DIAGNOSIS AND TESTINGU0121-LOST COMMUNICATION WITH ANTI-LOCK BRAKE SYSTEM (ABS) CONTROL MODULEDIAGNOSTIC TEST
2013 Jeep Wrangler Unlimited Rubicon, Automatic Trans
Diagnostic Test
2013 Jeep Wrangler Unlimited Rubicon, Automatic TransSECTION Diagnostic Test
- VERIFY DIAGNOSTIC TROUBLE CODE (DTC) IS ACTIVE NOTE:
Make sure the IOD fuse is installed and battery voltage is between 10 and 16 volts before proceeding.
- Turn the ignition on.
- With the scan tool, read ORC DTCs.
Is the U0121-LOST COMMUNICATION WITH ANTI-LOCK BRAKE SYSTEM (ABS) CONTROL MODULE DTC active?
Yes
- Refer to DIAGNOSIS AND TESTING and perform the U0121-Lost Communication with Anti-lock Brake System (ABS) Control Module diagnostic procedure.
No
- Refer to DIAGNOSIS AND TESTING and perform the Stored Lost Communication DTCs diagnostic procedure.
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.