C1506

C1506-LEFT FRONT TIRE PRESSURE TRIGGER MODULE PERFORMANCE







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 (TPM) 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 (TPM) 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 WCM will reset the appropriate trigger module fault status.





1. DTC STATUS IS ACTIVE
1. Ignition on, engine not running.
2. With the scan tool, select View DTCs in the Wireless Control Module (WCM).

Is the DTC status Active at this time?

Yes

- Go To 2

No

- Go To 4

2. TIRE PRESSURE TRIGGER MODULE
1. Turn the ignition off.
2. Replace the appropriate Tire Pressure Trigger Module.
3. With the scan tool, clear DTCs in the Wireless Control Module (WCM).
4. Test Drive the vehicle for a minimum of 10 minutes with vehicle speed greater than 15 mph (24 km/h).
5. With the scan tool, select View DTCs in the Wireless Control Module (WCM).

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

Yes

- Go To 3

No

- Test Complete.
- Perform TPM VERIFICATION TEST TPM Verification Test.

3. WIRELESS CONTROL MODULE (WCM)
1. View repair.

Repair

- Replace the Wireless Control Module (WCM).
- Perform TPM VERIFICATION TEST TPM 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. Search for any Technical Service Bulletins that may apply to this condition.
4. With the scan tool, clear DTCs in the Wireless Control Module (WCM).
5. Test Drive the vehicle for a minimum of 10 minutes with vehicle speed greater than 15 mph (24 km/h).
6. With the scan tool, select View DTCs in the Wireless Control Module (WCM).

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 TPM Verification Test.