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HOMESERVICE MANUALSJEEP2013COMPASS SPORT, 2.4L ENG VIN B, FWD, STANDARD TRANSREPAIR AND DIAGNOSIS (SINGLE PAGE)BRAKESTRACTION CONTROL(ANTILOCK BRAKE SYSTEM (ABS) - ELECTRICAL DIAGNOSTICS)DTC TROUBLESHOOTINGC1043-LEFT REAR TONE WHEEL PERFORMANCEDIAGNOSTIC TEST
2013 Jeep Compass Sport, 2.4L Eng VIN B, FWD, Standard Trans

Diagnostic Test

2013 Jeep Compass Sport, 2.4L Eng VIN B, FWD, Standard TransSECTION Diagnostic Test
  1. CHECK FOR A DTC C1043-LEFT REAR TONE WHEEL PERFORMANCE 
    NOTE:

    This DTC must be active for the results of this test to be valid.

    1. Turn the ignition on.
    2. With the scan tool, read DTCs.
    3. Record DTC and Freeze Frame information.
    4. With the scan tool, erase DTCs.
    5. Cycle the ignition switch off then on.
      CAUTION:

      Make sure brake capability is available before road testing.

    6. Test drive the vehicle in a straight line to 40 km/h (25 mph).
      NOTE:

      Vehicle must be driven above 40 km/h (25 mph) for set conditions to be met.

    7. With the scan tool, read DTCs.

      Does the scan tool display: C1043-LEFT REAR TONE WHEEL PERFORMANCE?

      Yes 

      • Go To  3

      No 

      • Go To  2
  2. CHECK WHEEL SPEED SENSOR SIGNALS 
    1. Turn the ignition on.
    2. With the scan tool, monitor and graph ALL the WSS speeds and compare graph while an assistant drives the vehicle.
      NOTE:

      If graph shows periodic dropouts pay close attention to the tone wheel.

    3. Slowly accelerate as straight as possible from a stop to 40 km/h (25 mph).

      Is the Left Rear WSS speed showing 0 km/h (0 mph) or not matching other wheels or showing erratic behavior?

      Yes 

      • Go To  3

      No 

  3. CHECK FOR IMPROPER LEFT REAR TIRE PRESSURE/MISMATCHED TIRES 
    1. Turn the ignition off.
    2. Check and adjust the Left Rear Tire pressure.
    3. Check and adjust all other tire pressures.
    4. Inspect for mismatched tires on vehicle.

      Is the Left Rear Tire improperly inflated or mismatched tires on vehicle?

      Yes 

      No 

      • Go To  4
  4. CHECK AXLE SHAFT FASTENER HARDWARE FOR LOOSENESS 
    1. Inspect the axle shaft fastener for looseness, and not properly fastened. Tighten fastener to proper specification as required.

      Was the Axle Shaft fastener loose?

      Yes 

      • Repair as necessary.

      No 

      • Go To  5
  5. CHECK THE LEFT REAR TONE WHEEL/BEARING FOR DAMAGE 
    NOTE:

    Check the tone wheel teeth for missing teeth, cracks, or looseness. Teeth should be perfectly square, not bent, or nicked.

    1. Check the Left Rear Tone Wheel/Bearing for damage.
    2. Check the Left Rear Tone Wheel for dirt.

      Was the tone wheel dirty?

      Yes 

      • Clean tone wheel and sensor. Clear codes and retest.
      • Perform ABS VERIFICATION TEST. Refer to ABS VERIFICATION TEST  .

      No 

      • Replace the Left Rear Tone Wheel/Bearing in accordance with the Service Information.
      • Perform ABS VERIFICATION TEST. Refer to ABS VERIFICATION TEST  .
RENDER: 1.0x

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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.