C1506

C1506-LEFT FRONT TIRE PRESSURE TRIGGER MODULE PERFORMANCE





For a complete wiring diagram, refer to the Wiring Information Electrical Diagrams.

Theory of Operation

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

- When Monitored:
Continuously.

- Set Condition:
The WCM will monitor the messages from each Tire Pressure Monitoring (TPM) Transponder 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 WCM will reset the appropriate trigger module fault status.





NOTE: The TPM Transponder is commonly referred to as a Trigger Module.

1. DTC STATUS IS ACTIVE
1. Ignition on, engine not running.
2. With the scan tool, read DTCs.

Is the DTC status Active at this time?

Yes

- Go To 2

No

- Go To 4

2. TIRE PRESSURE MONITORING (TPM) TRANSPONDER
1. Turn the ignition off to the lock position.
2. Replace the Left Front Tire Pressure Monitoring (TPM) Transponder.Perform the TPM VERIFICATION TEST. Tire Pressure Monitor (TPM) Verification Test.
3. With the scan tool, erase DTCs in the Wireless Control Module (WCM).
4. Test Drive the vehicle for a minimum of 10 minutes with vehicle speed greater than 24 km/h (15 mph).
5. With the scan tool, read DTCs.

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

Yes

- Go To 3

No

- Test complete.

3. WIRELESS CONTROL MODULE (WCM)

View the repair.

Repair

- Replace the Wireless Control Module (WCM).
- Perform the WCM VERIFICATION TEST. Wireless Control Module (WCM) Verification Test.

4. INTERMITTENT TIRE PRESSURE TRIGGER MODULE DTC
1. The conditions necessary to set this DTC are not present at this time.
2. Using the wiring schematic as a guide, inspect the wiring and connectors relative to this circuit.
3. Perform any Technical Service Bulletins that may apply to this condition.
4. With the scan tool, erase DTCs in the Wireless Control Module (WCM).
5. Test drive the vehicle for a minimum of 10 minutes with vehicle speed greater than 24 km/h (15 mph).
6. With the scan tool, read DTCs.

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.