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Home >> Jeep >> 2022 >> Gladiator Mojave, Part Time T/Case Control, Standard Trans >> Repair and Diagnosis >> Brakes >> Traction Control >> Antilock Brake System (Abs) - DTCS B1783-01 To C003A-2F >> DTC Troubleshooting >> C0034-2F-Right Front Wheel Speed Sensor - Signal Erratic >> Diagnostic Test

Diagnostic Test

  1. CHECK FOR AN ACTIVE DTC 
    NOTE:

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

    1. Perform any Service Bulletins that may apply.
    2. Turn the ignition on.
    3. With the scan tool, read ABS DTCs and record on the repair order.
    4. With the scan tool, read and record Environmental Data to help identify the conditions in which the DTC was set.
    5. With the scan tool, erase DTCs.
      WARNING:

      To avoid possible serious or fatal injury, check brake capability is available before road testing.

    6. Road test the vehicle over 40 km/h (25 mph).
      NOTE:

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

    7. With the scan tool, read ABS DTCs.

      Did the DTC return?

      Yes 

      • Go To  2

      No 

      • The condition that caused the symptom is currently not present. Inspect the related wiring for a possible intermittent condition. Look for any chafed, pierced, pinched, or partially broken wires.
      • Perform the ABS INTERMITTENT CONDITION TEST. Refer to ABS INTERMITTENT CONDITION .
  2. CHECK FOR WHEEL SPEED SENSOR (WSS) FOR CIRCUIT RELATED DTCS 
    1. Refer to the recorded DTCs.

      Are there any WSS circuit related DTCs present?

      Yes 

      No 

      • Go To  3
  3. CHECK THE WHEEL SPEED SENSOR (WSS) 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 encoder/tone wheel.

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

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

      Yes 

      • Go To  4

      No 

  4. CHECK THE WSS FOR LOOSENESS, INSPECT CIRCUITS/CONNECTORS/TERMINALS FOR DAMAGE 
    NOTE:

    Check all terminals for broken, bent, pushed out, or corroded terminals.

    1. Turn the ignition off.
    2. Inspect the ABS Module harness connector and the WSS harness connector.
    3. Check the WSS for looseness, excessive corrosion and not properly fastened.
    4. Inspect the Right Front WSS circuits between the WSS and the Anti-lock Brake System (ABS) Module for damage.
    5. Inspect the Right Front WSS circuits between the WSS and the Anti-lock Brake System (ABS) Module for damage.
    6. Inspect the Wheel Speed Sensor for proper mounting.
    7. Remove the Wheel Speed Sensor. Refer to SENSOR, WHEEL SPEED, FRONT, REMOVAL AND INSTALLATION .
    8. Inspect the Wheel Speed Sensor for excessive debris on the sensor.

      Were any problems found?

      Yes 

      • Repair as necessary, refer to the appropriate service information, if necessary, for procedures or specifications.
      • Go To  6

      No 

      • Go To  5
  5. CHECK THE WHEEL BEARING/TONE WHEEL OR HUB FOR DAMAGE 
    1. Inspect the Wheel Bearing/Tone Wheel and Hub for excessive runout, clearance, damage or debris.
      NOTE:

      Refer to the appropriate service information, if necessary, for procedures or specifications.

      Is the Right Front Wheel Bearing/Tone Wheel or Hub Damaged?

      Yes 

      No 

      • Go To  6
  6. ASSEMBLE THE SYSTEM AND TEST FOR DTCS 
    1. Clean the Wheel Bearing/Tone Wheel and WSS and reassemble. Refer to SENSOR, WHEEL SPEED, FRONT, REMOVAL AND INSTALLATION .
      WARNING:

      To avoid possible serious or fatal injury, check brake capability is available before road testing.

    2. Road test the vehicle over 40 km/h (25 mph).
      NOTE:

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

    3. With the scan tool, erase ABS DTCs.
    4. Turn the ignition off for a minimum of 10.0 seconds.
    5. Turn the ignition on.
    6. With the scan tool, read ABS DTCs.

      Did the DTC return?

      Yes 

      • Go To  7

      No 

      • The condition that caused the symptom is currently not present. Inspect the related wiring for a possible intermittent condition. Look for any chafed, pierced, pinched, or partially broken wires.
      • Perform the ABS INTERMITTENT CONDITION TEST. Refer to ABS INTERMITTENT CONDITION .
  7. REPLACE THE WHEEL SPEED SENSOR (WSS) AND TEST FOR DTCS 
    1. Replace the Wheel Speed Sensor (WSS) in accordance with the Service Information. Refer to SENSOR, WHEEL SPEED, FRONT, REMOVAL AND INSTALLATION .
    2. Perform the ABS VERIFICATION TEST. Refer to ABS VERIFICATION TEST .
      WARNING:

      To avoid possible serious or fatal injury, check brake capability is available before road testing.

    3. Road test the vehicle over 40 km/h (25 mph).
      NOTE:

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

    4. With the scan tool, read ABS DTCs.

      Did the DTC return?

      Yes 

      • Go To  8

      No 

      • Test Complete.
  8. CHECK RELATED HARNESS CONNECTIONS 
    1. Turn the ignition off.
    2. Disconnect the ABS Module harness connector.
    3. Disconnect all related in-line harness connections (if equipped).
    4. Disconnect the related component harness connectors.
    5. Inspect harness connectors, component connectors, and all male and female terminals for the following conditions:
      • Proper connector installation.
      • Damaged connector locks.
      • Corrosion.
      • Other signs of water intrusion.
      • Weather seal damage (if equipped).
      • Bent terminals.
      • Overheating due to a poor connection (terminal may be discolored due to excessive current draw).
      • Terminals that have been pushed back into the connector cavity.
      • Perform a terminal drag test on each connector terminal to verify proper terminal tension.

      Repair any conditions that are found.

    6. Connect the ABS Module harness connector. Be certain that the harness connector is fully seated and the connector lock is fully engaged.
    7. Connect all in-line harness connectors (if equipped). Be certain that all connectors are fully seated and the connector locks are fully engaged.
    8. Connect the related component harness connectors. Be certain that all connectors are fully seated and the connector locks are fully engaged.
    9. With the scan tool, erase ABS DTCs.
      WARNING:

      To avoid possible serious or fatal injury, check brake capability is available before road testing.

    10. Using the recorded Event and Environmental Data, along with the When Monitored and Set Conditions above, operate the vehicle in the conditions that set the DTC.
    11. With the scan tool, read ABS Module DTCs.

      Did the DTC return?

      Yes 

      No 

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