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Home >> Jeep >> 2005 >> Wrangler Rubicon, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 542 (Anti-Lock Brake System & Brake Controller - Electrical Diagnostics) >> DTC Troubleshooting >> Antilock Brake System & Electronic Stability Program >> C101C-Right Front Wheel Speed Sensor Signal Erratic Performance >> Diagnostic Test

Diagnostic Test

WARNING: This page is about a different car, the 2005 Jeep Grand Cherokee. However, it is still accessible from the selected car via links, so may be relevant.
  1. 1)  CHECK FOR A DTC C101C-RIGHT FRONT WHEEL SPEED SENSOR SIGNAL ERRATIC PERFORMANCE 
    NOTE: This DTC must be active for the results of this test to be valid.

    Turn the ignition on.

    With the scan tool, read DTCs.

    Record DTC and Freeze Frame information.

    With the scan tool, erase DTCs.

    CAUTION: Ensure braking capability is available before road testing.

    Drive the vehicle over 25 Km/h (15 mph).

    Park the vehicle and cycle the ignition switch from off to on.

    With the scan tool, read DTCs.

    Does the scan tool display: C101C-RIGHT FRONT WHEEL SPEED SENSOR SIGNAL ERRATIC PERFORMANCE? 

    Yes 

    1. Go To step  2).

    No 

    1. Refer ABS-INTERMITTENT CONDITION .
    2. Perform ABS VERIFICATION TEST - VER 1 .
  2. 2)  CHECK THE TERMINALS/CONNECTORS/TONE WHEEL FOR DAMAGE 
    NOTE: Check all related wiring for bruised, chafed, pierced, or partially broken wires.
    NOTE: Check all related connectors for broken, bent, pushed out, or corroded terminals.
    NOTE: Check the tone wheel teeth for missing teeth, cracks, or looseness. Teeth should be perfectly square, not bent, or nicked.

    Turn the ignition off.

    Inspect the Anti-Lock Brake Module harness connector, Right Front WSS, Right Front WSS harness connector, and Right Front WSS tone wheel (if applicable).

    Were any problems found? 

    Yes 

    1. Repair as necessary.
    2. Perform ABS VERIFICATION TEST - VER 1 .

    No 

    1. Go To step  3).
  3. 3)  (B6) RIGHT FRONT WSS SIGNAL CIRCUIT SHORTED TO THE (B7) RIGHT FRONT WSS SUPPLY CIRCUIT 
    Fig 1: Checking Right Front WSS Signal Circuit & Supply Circuit
    GC0026882Courtesy of DAIMLERCHRYSLER CORP.

    Turn the ignition off.

    Disconnect the Anti-Lock Brake Module harness connector.

    Disconnect the Right Front WSS harness connector.

    Measure the resistance between the (B6) Right Front WSS Signal and the (B7) Right Front WSS Supply circuits at the Right Front WSS harness connector.

    Is the resistance above 5.0 ohms? 

    Yes 

    1. Go To step  4).

    No 

    1. Repair the (B6) Right Front WSS Signal circuit for a short to the (B7) Right Front WSS Supply circuit.
    2. Perform ABS VERIFICATION TEST - VER 1 .
  4. 4)  CHECK THE VOLTAGE ON THE (B7) RIGHT FRONT WSS SUPPLY CIRCUIT 
    Fig 2: Checking Right Front WSS Supply Circuit
    GC0026883Courtesy of DAIMLERCHRYSLER CORP.

    Turn the ignition off.

    Connect the Anti-Lock Brake Module harness connector.

    Turn the ignition on.

    Measure the voltage of the (B7) Right Front WSS Supply circuit in the Right Front WSS harness connector.

    Is the voltage above 10 volts? 

    Yes 

    1. Go To step  8).

    No 

    1. Go To step  5).
  5. 5)  (B7) RIGHT FRONT WSS SUPPLY CIRCUIT SHORT TO VOLTAGE 
    Fig 3: Checking Right Front WSS Supply Circuit
    GC0026883Courtesy of DAIMLERCHRYSLER CORP.

    Turn the ignition off.

    Disconnect the Anti-Lock Brake Module harness connector.

    Turn the ignition on.

    Measure the voltage of the (B7) Right Front WSS Supply circuit.

    Is there any voltage present? 

    Yes 

    1. Repair the (B7) Right Front WSS Supply circuit for a short to voltage.
    2. Perform ABS VERIFICATION TEST - VER 1 .

    No 

    1. Go To step  6).
  6. 6)  (B7) RIGHT FRONT WSS SUPPLY CIRCUIT SHORT TO GROUND 
    Fig 4: Checking Right Front WSS Supply Circuit
    GC0026884Courtesy of DAIMLERCHRYSLER CORP.

    Turn the ignition off.

    Measure the resistance between ground and the (B7) Right Front WSS Supply circuit.

    Is the resistance below 5.0 ohms? 

    Yes 

    1. Repair the (B7) Right Front WSS Supply circuit for a short to ground.
    2. Perform ABS VERIFICATION TEST - VER 1 .

    No 

    1. Go To step  7).
  7. 7)  (B7) RIGHT FRONT WSS SUPPLY CIRCUIT OPEN 
    Fig 5: Checking Right Front WSS Supply Circuit
    GC0026885Courtesy of DAIMLERCHRYSLER CORP.

    Measure the resistance of the (B7) Right Front WSS Supply circuit.

    Is the resistance below 5.0 ohms? 

    Yes 

    1. Replace the Anti-Lock Brake Module in accordance with the Service Information.
    2. Perform ABS VERIFICATION TEST - VER 1 .

    No 

    1. Repair the (B7) Right Front WSS Supply circuit for an open.
    2. Perform ABS VERIFICATION TEST - VER 1 .
  8. 8)  CHECK THE (B7) RIGHT FRONT WSS SUPPLY AND THE (B6) RIGHT FRONT WSS SIGNAL VOLTAGE 
    Fig 6: Checking Right Front WSS Signal Circuit & Supply Circuit
    GC0026886Courtesy of DAIMLERCHRYSLER CORP.

    Measure the voltage between the (B7) Right Front WSS Supply and (B6) Right Front WSS Signal circuits at the Right Front WSS harness connector.

    Is the voltage above 10 volts? 

    Yes 

    1. Go To step  11).

    No 

    1. Go To step  9).
  9. 9)  (B6) RIGHT FRONT WSS SIGNAL CIRCUIT SHORT TO VOLTAGE 
    Fig 7: Checking Right Front WSS Signal Circuit
    GC0026887Courtesy of DAIMLERCHRYSLER CORP.

    Turn the ignition off.

    Disconnect the Anti-Lock Brake Module harness connector.

    Turn the ignition on.

    Measure the voltage of the (B6) Right Front WSS Signal circuit.

    Is there any voltage present? 

    Yes 

    1. Repair the (B6) Right Front WSS Signal circuit for a short to voltage.
    2. Perform ABS VERIFICATION TEST - VER 1 .

    No 

    1. Go To step  10).
  10. 10)  (B6) RIGHT FRONT WSS SIGNAL CIRCUIT OPEN 
    Fig 8: Checking Right Front WSS Signal Circuit
    GC0026888Courtesy of DAIMLERCHRYSLER CORP.

    Turn the ignition off.

    Measure the resistance of the (B6) Right Front WSS Signal circuit.

    Is the resistance above 5.0 ohms? 

    Yes 

    1. Repair the (B6) Right Front WSS Signal circuit for an open.
    2. Perform ABS VERIFICATION TEST - VER 1 .

    No 

    1. Replace the Anti-Lock Brake Module in accordance with the Service Information.
    2. Perform ABS VERIFICATION TEST - VER 1 .
  11. 11)  CHECK THE (B6) RIGHT FRONT WSS SIGNAL CIRCUIT FOR A SHORT TO GROUND 
    Fig 9: Checking Right Front WSS Signal Circuit
    GC0026889Courtesy of DAIMLERCHRYSLER CORP.

    Turn the ignition off.

    Measure the resistance between ground and the (B6) Right Front WSS Signal circuit.

    Is the resistance below 5.0 ohms? 

    Yes 

    1. Repair the (B6) Right Front WSS Signal circuit for a short to ground.
    2. Perform ABS VERIFICATION TEST - VER 1 .

    No 

    1. Go To step  12).
  12. 12)  CHECK THE (B6) RIGHT FRONT WSS SIGNAL VOLTAGE AT THE RIGHT FRONT WSS HARNESS CONNECTOR 
    Fig 10: Checking Right Front WSS Signal Voltage
    GC0026890Courtesy of DAIMLERCHRYSLER CORP.

    Turn the ignition off.

    Reconnect all connectors.

    Turn the ignition on.

    While back probing, measure the voltage between the (B6) Right Front WSS Signal circuit at the Right Front WSS harness connector and ground.

    Slowly rotate the wheel by hand.

    Does the (B6) Right Front WSS Signal circuit voltage toggle between approximately 1.6 and.8 volts? 

    Yes 

    1. Go To step  13).

    No 

    1. Replace the Right Front WSS in accordance with the Service Information.
    2. Perform ABS VERIFICATION TEST - VER 1 .
  13. 13)  CHECK THE (B6) RIGHT FRONT WSS SIGNAL VOLTAGE AT THE ANTI-LOCK BRAKE MODULE HARNESS CONNECTOR 
    Fig 11: Checking Right Front WSS Signal Voltage
    GC0026891Courtesy of DAIMLERCHRYSLER CORP.

    Turn the ignition off.

    Turn the ignition on.

    While back probing, measure the voltage between the (B6) Right Front WSS Signal circuit at the Anti-Lock Brake Module harness connector and ground.

    Slowly rotate the wheel by hand.

    Does the (B6) Right Front WSS Signal circuit voltage toggle between approximately 1.6 and.8 volts? 

    Yes 

    1. Replace the Anti-Lock Brake Module in accordance with the Service Information.
    2. Perform ABS VERIFICATION TEST - VER 1 .

    No 

    1. Repair the (B6) Right Front WSS Signal circuit for an open.
    2. Perform ABS VERIFICATION TEST - VER 1 .
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