C150D–RIGHT REAR TIRE PRESSURE TRIGGER MODULE VOLTAGE HIGH





For a complete wiring diagram Refer to Section 8W

Theory of Operation


The Tire Pressure Trigger Module is used to automatically learn the location of each wheel sensor on the vehicle. The module is controlled and activated in sequence by the Wireless Control Module (SKREEM) over a LIN bus. When activated, the module will generate a 125 KHz signal of sufficient field strength to trigger the tire pressure sensor and force a RF transmission from the sensor.


  • When Monitored:

    Continuously.

  • Set Condition:

    The WCM receives a message from the Tire Pressure Trigger Module indicating that an over voltage condition has been detected.


Possible Causes
  
INTERMITTENT TIRE PRESSURE TRIGGER MODULE PERFORMANCE DTC
  
(F202) FUSED IGNITION SWITCH OUTPUT (RUN) CIRCUIT OPEN OR HIGH RESISTANCE
  
(Z965) GROUND CIRCUIT(S) OPEN OR HIGH RESISTANCE
  
TIRE PRESSURE TRIGGER MODULE
  
WIRELESS CONTROL MODULE (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 a system or battery voltage high DTC is set in the Wireless Control Module (SKREEM) or in the PCM, repair the voltage DTC before continuing with this test.




Is the DTC status Active at this time?

Yes
  • Go to 2


No
  • Go to 6

2.





NOTE: The test light should be illuminated and bright. Compare the brightness to that of a direct connection to the battery.



Is the test light illuminated and bright?

Yes
  • Go to 3


No

3.




NOTE: The test light should be illuminated and bright. Compare the brightness to that of a direct connection to the battery.



Is the test light illuminated and bright?

Yes
  • Go to 4


No

4.TIRE PRESSURE TRIGGER MODULE







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

Yes
  • Go to 5


No

5.WIRELESS CONTROL MODULE (SKREEM)





Repair

6.INTERMITTENT TIRE PRESSURE TRIGGER MODULE DTC







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

Yes
  • Return to the first step of this test and perform the diagnostic procedure.


No