C1506

C1506-LEFT FRONT TIRE PRESSURE TRIGGER MODULE PERFORMANCE

For a complete wiring diagram REFER to DIAGRAMS/ELECTRICAL

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 Ignition Node (WIN) 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 low frequency RF transmission from the sensor.


- When Monitored:
Continuously.

- Set Condition:
The Wireless Ignition Node (WIN) will monitor the messages from each Tire Pressure Trigger Module over the LIN bus. If any of the messages are not received, or are received other than as expected, a DTC will set. When the condition is corrected, or is no longer detected, as acknowledged via a LIN bus message, the WIN will reset the appropriate trigger module fault status.






Diagnostic Test


1. DTC STATUS IS ACTIVE
NOTE: If the incorrect Placard Values were programmed into the WIN, 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.

Turn the ignition on.
With the scan tool, select View DTCs in the Wireless Ignition Node (WIN).
Is the DTC status Active at this time?

Yes


- Go to 2


No


- Go to 4


2. TIRE PRESSURE TRIGGER MODULE
Turn the ignition off.
Replace the appropriate Tire Pressure Trigger Module.
With the scan tool, clear DTCs in the WIN.
Test Drive the vehicle for a minimum of 10 minutes with vehicle speed greater than 15 MPH (24 km/h).
With the scan tool, select View DTCs in the WIN.
Does the DTC reset or is the status Active for this DTC?

Yes


- Go to 3


No


- Test Complete.
- Perform TPM VERIFICATION TEST.Tire Pressure Monitor (TPM) Verification Test


3. WIRELESS IGNITION NODE (WIN)
View repair.


Repair


- Replace the Wireless Ignition Node (WIN).
- Perform TPM VERIFICATION TEST.Tire Pressure Monitor (TPM) Verification Test


4. INTERMITTENT TIRE PRESSURE TRIGGER MODULE DTC
The conditions necessary to set this DTC are not present at this time.
Using the wiring schematic as a guide, inspect the wiring and connectors relative to this circuit.
Refer to any Technical Service Bulletins that may apply to this condition.
With the scan tool, clear DTCs in the WIN.
Test Drive the vehicle for a minimum of 10 minutes with vehicle speed greater than 15 MPH (24 km/h).
With the scan tool, select View DTCs in the WIN.
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


- Test complete.
- Perform TPM VERIFICATION TEST.Tire Pressure Monitor (TPM) Verification Test