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HOMESERVICE MANUALSJEEP2009WRANGLER X, STANDARDREPAIR AND DIAGNOSIS (SINGLE PAGE)ACCESSORIES & EQUIPMENTCOMMUNICATION DEVICESWIRELESS CONTROL MODULE (WCM) - ELECTRICAL DIAGNOSTICSDTC TROUBLESHOOTINGC151C-TIRE PRESSURE MONITORING (TPM) SENSORS MISSINGDIAGNOSTIC TEST
2009 Jeep Wrangler X, Standard

Diagnostic Test

2009 Jeep Wrangler X, StandardSECTION Diagnostic Test
  1. VERIFY DTC IS ACTIVE 
    NOTE: The DTC can be caused by many different factors and might not be a sensor/transmitter or a WCM fault. Interference from other elements will over power the sensor/transmitter RF frequency making erratic operation to the TPM system. Check the vehicle for aftermarket accessories that could compromise the RF frequency signal before diagnosing the TPM system.
    1. Correct all tire pressures to the recommended cold inflation tire pressure specifications and wait two minutes for the system to update.
    2. Ignition on, engine not running.
    3. With the scan tool, record and erase DTCs.
    4. Test drive the vehicle at a speed greater than 15 mph (24 km/h) for 10 minutes in order to receive TPM data and allow for the system to update.
    5. With the scan tool, read DTCs.

      Is the DTC status Active at this time?

      Yes 

      • Go to step  2

      No 

      • Go to step  5
  2. TPM-RKE ANALYZER 9936 TOOL 

    Is there a TPM-RKE Analyzer 9936 available?

    Yes 

    • Go to step  3

    No 

    • Go to step  4
  3. WITH TPM-RKE TOOL CHECK TIRE PRESSURE MONITORING (TPM) SENSOR ID(S) 
    NOTE: Always be certain to select the proper vehicle line and model year when using this tool, as the tool automatically uses the correct protocol to attempt to read the Sensor. If the incorrect vehicle line and/or model year is selected, the Sensor will not respond to the tool.
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.