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Home >> Jeep >> 2014 >> Wrangler Sahara, Standard Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 79 (2.4L - DTCS P0443 To P1593) >> Diagnosis And Testing >> P0501-Vehicle Speed Sensor 1 Performance >> Diagnostic Test

Diagnostic Test

WARNING: This page is about a different car, the 2014 Dodge Journey. However, it is still accessible from the selected car via links, so may be relevant.
  1. ACTIVE DTC 
    1. Ignition on, engine not running.
      NOTE:

      Check for any Bus Communication DTCs. If no Bus or Communication DTCs are set, check for active DTCs in the Anti-Lock Brake Module. Any bus, communication, or VSS DTCs in the Anti-Lock Brake Module must be properly diagnosed before continuing.

    2. With a scan tool, select View DTCs.

      Is the status Active for this DTC?

      Yes 

      • Go To  2

      No 

  2. VISUAL INSPECTION 
    NOTE:

    This code can set due to tire circumference differences and from the front or rear wheels being on a slippery surface while the opposite tires are not.

    1. This code may also set on a hard acceleration on loose gravel or during other off road driving conditions.
    2. Check tire pressure of all the tires.
    3. Check tire wear on all the tires.
    4. Ask the customer what the road and driving conditions were like when the fault set.

      Were any problems found?

      Yes 

      • Repair as necessary. If the code set during a front OR rear wheel spin condition, no repair is necessary.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to PCM VERIFICATION TEST .

      No 

      • Go To  3
  3. POWERTRAIN CONTROL MODULE (PCM) 
    1. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors related to this circuit.
    2. Look for any chafed, pierced, pinched, or partially broken wires.
    3. Look for broken, bent, pushed out or corroded terminals.
    4. Perform any Technical Service Bulletins that may apply.

      Were any problems found?

      Yes 

      No