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 MANUALSJEEP2013WRANGLER SPORT, STANDARD TRANSREPAIR AND DIAGNOSISBRAKESTRACTION CONTROLANTILOCK BRAKE SYSTEM (ABS) - ELECTRICAL DIAGNOSTICSDTC TROUBLESHOOTINGC1243-G SENSOR NOT INITIALIZEDDIAGNOSTIC TEST

2013 Jeep Wrangler Sport, Standard Trans

Diagnostic Test

2013 Jeep Wrangler Sport, Standard TransSECTION Diagnostic Test

PERFORM ECU INITIALIZATION
1. Turn the ignition on.
2. With the scan tool, erase ABS DTCs.
3. Cycle the ignition switch.
  WARNING:
  To avoid possible serious or fatal injury, check brake capability is available before road testing.
4. Perform ECU initialization with drive test. Refer to STANDARD PROCEDURE and perform the ABS VERIFICATION TEST.
  NOTE:
  The ECU Initialization process must include driving the vehicle into a 90° turn.
5. Park the vehicle.
  - Go To 2
VERIFY IF DTC IS STILL ACTIVE
1. Cycle the ignition switch.
  WARNING:
  To avoid possible serious or fatal injury, check brake capability is available before road testing.
2. Test drive the vehicle by turning the vehicle left or right in a curving manner at a velocity between 10 and 25 km/h (6 and 15 mph).
3. Park the vehicle.
4. With the scan tool, read ABS DTCs.
  Does this DTC reset?
  
  Yes
  
  NOTE:
  Vehicles without a Dynamics Sensor replace Anti-Lock Brake Module.
  - Replace the Dynamics Sensor or Anti-Lock Brake Module in accordance with the Service Information.
  - Perform ABS VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Perform the ABS-INTERMITTENT CONDITION TEST. Refer to STANDARD PROCEDURE .

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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.