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Home >> Chrysler >> 2011 >> 300 Base, Gas >> Repair and Diagnosis >> External Pages >> Different car >> Section 98 (6.7L Diesel - DTCS - P040D To P1191 - 3500 Cab & Chassis) >> Diagnosis and Testing >> P0501-Vehicle Speed Sensor 1 Performance >> Testing >> Diagnostic Test

Diagnostic Test

WARNING: This page is about a different car, the 2011 RAM Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
  1. DTC IS ACTIVE 
    1. Turn the ignition on.
    2. With the scan tool, clear DTCs.
    3. Test drive the vehicle.
    4. With the scan tool, select View DTCs.

      Is the status Active for this DTC?

      Yes 

      • Go To  2.

      No 

  2. INSPECT THE WHEEL SPEED SENSOR 
    1. Turn the ignition off.
    2. Inspect the Wheel Speed Sensor for proper mounting.
    3. Inspect the Wheel Speed Sensor harness and connector.
    4. Inspect the Wheel Speed Sensor for excessive debris on the sensor.

      Were any problems found?

      Yes 

      • Repair as necessary in accordance with the Service Information.
      • Perform the ABS VERIFICATION TEST. Refer to ABS VERIFICATION TEST .

      No 

      • Go To  3.
  3. CHECK FOR TONE WHEEL DAMAGED/MISSING 
    1. Inspect the Tone Wheel in accordance with the Service Information.
      NOTE:

      The Tone Wheel Teeth should be perfectly square, not bent or nicked.

      Were any problems found?

      Yes 

      • Replace the Tone Wheel in accordance with the Service Information.
      • Perform the ABS VERIFICATION TEST. Refer to ABS VERIFICATION TEST .

      No 

      • Go To  4.
  4. CHECK FOR EXCESSIVE WHEEL SPEED SENSOR AIR GAP 
    1. Measure the Wheel Speed Sensor Air Gap in accordance with the Service Information.

      Were any problems found?

      Yes 

      • Repair as necessary in accordance with the Service Information.
      • Perform the ABS VERIFICATION TEST. Refer to ABS VERIFICATION TEST .

      No 

      • Go To  5.
  5. CHECK FOR WHEEL BEARING LOOSE/BINDING 
    1. Inspect the wheel bearings for excessive run out or improper clearance in accordance with the Service Information.

      Were any problems found?

      Yes 

      • Repair as necessary in accordance with the Service Information.
      • Perform the ABS VERIFICATION TEST. Refer to ABS VERIFICATION TEST .

      No 

      • Go To  6.
  6. CHECK THE (B222) REAR WHEEL SPEED SENSOR SUPPLY CIRCUIT FOR A SHORT TO GROUND 
    Fig 1: Rear Wheel Speed Sensor Connector Pin ID
    GC0110492Courtesy of CHRYSLER LLC
    1. Turn the ignition off.
    2. Disconnect the Rear Wheel Speed Sensor harness connector.
    3. Disconnect the Anti-lock Brake Module harness connector.
      NOTE:

      Check connector - Clean/repair as necessary.

    4. Measure the resistance between the (B222) Rear Wheel Speed Sensor Supply circuit and ground.

      Is the resistance above 5.0 Ohms?

      Yes 

      • Go To  7.

      No 

      • Repair the (B222) Rear Wheel Speed Sensor Supply circuit for a short to ground.
      • Perform the ABS VERIFICATION TEST. Refer to ABS VERIFICATION TEST .
  7. CHECK THE (B22) REAR WHEEL SPEED SENSOR SIGNAL CIRCUIT FOR A SHORT TO GROUND 
    Fig 2: Rear Wheel Speed Sensor Connector Pin ID
    GC0110493Courtesy of CHRYSLER LLC
    1. Measure the resistance between the (B22) Rear Wheel Speed Sensor Signal circuit and ground.

      Is the resistance above 5.0 Ohms?

      Yes 

      • Go To  8.

      No 

      • Repair the (B22) Rear Wheel Speed Sensor Signal circuit for a short to ground.
      • Perform the ABS VERIFICATION TEST. Refer to ABS VERIFICATION TEST .
  8. CHECK THE (B222) REAR WHEEL SPEED SENSOR SUPPLY CIRCUIT FOR AN OPEN/HIGH RESISTANCE 
    Fig 3: Checking Rear Wheel Speed Sensor Supply Circuit For Open Or High Resistance
    GC0110939Courtesy of CHRYSLER LLC
    1. Measure the resistance of the (B222) Rear Wheel Speed Sensor Supply circuit.

      Is the resistance below 5.0 Ohms?

      Yes 

      • Go To  9.

      No 

      • Repair the (B222) Rear Wheel Speed Sensor Supply circuit for an open or high resistance.
      • Perform the ABS VERIFICATION TEST. Refer to ABS VERIFICATION TEST .
  9. CHECK THE (B22) REAR WHEEL SPEED SENSOR SIGNAL CIRCUIT FOR AN OPEN/HIGH RESISTANCE 
    Fig 4: Checking Rear Wheel Speed Sensor Signal Circuit For Open Or High Resistance
    GC0110940Courtesy of CHRYSLER LLC
    1. Measure the resistance of the (B22) Rear Wheel Speed Sensor Signal circuit.

      Is the resistance below 5.0 Ohms?

      Yes 

      • Go To  10.

      No 

      • Repair the (B22) Rear Wheel Speed Sensor Signal circuit for an open or high resistance.
      • Perform the ABS VERIFICATION TEST. Refer to ABS VERIFICATION TEST .
  10. CHECK THE (B222) REAR WHEEL SPEED SENSOR SUPPLY CIRCUIT FOR A SHORT TO VOLTAGE 
    Fig 5: Rear Wheel Speed Sensor Connector Pin ID
    GC0110496Courtesy of CHRYSLER LLC
    1. Turn the ignition on.
    2. Measure the voltage of the (B222) Rear Wheel Speed Sensor Supply circuit.

      Is there any voltage present?

      Yes 

      • Repair the (B222) Rear Wheel Speed Sensor Supply circuit for a short to voltage.
      • Perform the ABS VERIFICATION TEST. Refer to ABS VERIFICATION TEST .

      No 

      • Go To  11.
  11. CHECK THE (B22) REAR WHEEL SPEED SENSOR SIGNAL CIRCUIT FOR A SHORT TO VOLTAGE 
    Fig 6: Rear Wheel Speed Sensor Connector Pin ID
    GC0110497Courtesy of CHRYSLER LLC
    1. Measure the voltage of the (B22) Rear Wheel Speed Sensor Signal circuit.

      Is there any voltage present?

      Yes 

      • Repair the (B22) Rear Wheel Speed Sensor Signal circuit for a short to voltage.
      • Perform the ABS VERIFICATION TEST. Refer to ABS VERIFICATION TEST .

      No 

      • Go To  12.
  12. CHECK FOR THE (B222) REAR WHEEL SPEED SENSOR SUPPLY CIRCUIT SHORTED TO THE (B22) REAR WHEEL SPEED SENSOR SIGNAL CIRCUIT 
    Fig 7: Checking Rear Wheel Speed Sensor Supply Circuit For A Short To Sensor Signal Circuit
    GC0110941Courtesy of CHRYSLER LLC
    1. Turn the ignition off.
    2. Measure the resistance between the (B222) Rear Wheel Speed Sensor Supply circuit and the (B22) Rear Wheel Speed Sensor Signal circuit at the Anti-lock Brake Module harness connector.

      Is the resistance below 10k Ohms?

      Yes 

      • Repair the (B222) Rear Wheel Speed Sensor Supply circuit for a short to the (B22) Rear Wheel Speed Sensor Signal circuit.
      • Perform the ABS VERIFICATION TEST. Refer to ABS VERIFICATION TEST .

      No 

      • Go To  13.
  13. CHECK THE REAR WHEEL SPEED SENSOR 
    Fig 8: Checking Rear Wheel Speed Sensor Supply Circuit For A Short To Sensor Signal Circuit
    GC0110941Courtesy of CHRYSLER LLC
    1. Turn the ignition off.
    2. Connect the Rear Wheel Speed Sensor harness connector.
    3. Measure the resistance between the (B222) Rear Wheel Speed Sensor Supply circuit and (B22) Rear Wheel Speed Sensor Signal circuit at the Anti-lock Brake Module harness connector.
      NOTE:

      The resistance should be approximately 1600-2300 Ohms at 76° F (24.5° C).

      Is the resistance within the noted range?

      Yes 

      • Go To Refer to 14.

      No 

      • Replace the Rear Wheel Speed Sensor in accordance with the Service Information.
      • Perform the ABS VERIFICATION TEST. Refer to ABS VERIFICATION TEST .
  14. CHECK THE ANTI-LOCK BRAKE MODULE 
    1. Turn the ignition off.
    2. Inspect the related wiring harness. Look for any chafed, pierced, pinched, or partially broken wires.
    3. Inspect the related wire harness connectors. Look for broken, bent, pushed out, or corroded terminals.
    4. Perform any Technical Service Bulletins that may apply.

      Were any problems found?

      Yes 

      • Repair as necessary in accordance with the Service Information.
      • Perform the ABS VERIFICATION TEST. Refer to ABS VERIFICATION TEST .

      No 

      • Replace the Anti-lock Brake Module in accordance with the Service Information.
      • Perform the ABS VERIFICATION TEST. Refer to ABS VERIFICATION TEST .
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