TIRE SENSOR 1 LOW PRESSURE ALERT

For a complete wiring diagram Refer to Section 8W.


  • When Monitored:

    Continuously.

  • Set Condition:

    The fault is set when there is a low tire pressure condition or sensor pressure measurement error from the sensor/transmitter.


Possible Causes
 
INTERMITTENT PERFORMANCE DTC
 
LOW TIRE PRESSURE
 
TIRE PRESSURE SENSOR
 
WCM (SKREEM)
 




Diagnostic Test

1.

NOTE: If the incorrect Placard Values were programmed into the WCM/SKREEM, a DTC could be set. Before continuing with any TPM diagnostic test, using the scan tool, check that the correct Placard Values have been programmed in to the module.


NOTE: If the TPM indicator is illuminated, check for a low tire pressure condition. If the TPM indicator is flashing, check for DTCs.


NOTE: The following test is to locate the Tire Pressure Sensor/Transmitter. If the tires have been rotated, the Tire Pressure Sensor/Transmitter are no longer in sequence from the factory. Faults are linked to the sensor/transmitter IDs. You MUST locate the correct Tire Pressure Sensor/Transmitter that set the fault before continuing.






NOTE: Once a fault/alert has set, it will establish the location of the tire pressure sensors/transmitter. Repeat steps until the applicable Tire Pressure Sensor/Transmitter has been located.



Once the correct sensor/transmitter has been located continue.

Continue
  • Go to 2

2.LOW TIRE PRESSURE

NOTE: If the incorrect Placard Values were programmed into the WCM/SKREEM, a DTC could be set. Before continuing with any TPM diagnostic test, using the scan tool, check that the correct Placard Values have been programmed in to the module.

NOTE: Check tire, rim and valve stem for leaks.







Does the DTC reset or is the status Active for this DTC?

Yes
  • Go to 3


No
  • Go to 4

3.TIRE PRESSURE SENSOR

NOTE: A Pressure of 0 psi signals a broken pressure cell in the sensor (will cause a transmit failure if seen in 8 consecutive transmissions while driving).








Does the DTC reset or is the status Active for this DTC?

Yes
  • Replace the Wireless Control Module (SKREEM) in accordance with the Service Information.


No
  • Test Complete.

4.TIRE PRESSURE CORRECTION/INTERMITTENT

NOTE: If the tire pressure was out of specification and by adjusting the pressure corrected the DTC, the test is complete. If the tire pressure was within specification and were unable to reset the DTC an intermittent condition is present and the below steps may aid in identifying the failure.








Does the DTC reset or is the status Active for this DTC?

Yes
  • Repair as necessary.


No
  • Test complete.