C1507

C1507 - Left Rear Tire Pressure Trigger Module Performance






For a complete wiring diagram, refer to.

Theory of Operation

The Tire Pressure Monitoring (TPM) Transponder 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 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 WIN will reset the appropriate TPM Transponder fault status.






Test Step 1 - DTC STATUS IS ACTIVE

• 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.

• Ignition on, engine not running.

• With the scan tool, read DTCs.

Is the DTC status Active at this time?

Yes

• Go to Test Step 2 => [ Test Step 2 - TIRE PRESSURE TRIGGER MODULE ]

No

• Go to Test Step 4 => [ Test Step 4 - INTERMITTENT TIRE PRESSURE TRIGGER MODULE DTC ]

Test Step 2 - TIRE PRESSURE TRIGGER MODULE

• Turn the ignition off.

• Replace the Tire Pressure Monitoring (TPM) Transponder in accordance with the Service Information.

• With the scan tool, erase DTCs.

• Test Drive the vehicle for a minimum of 20 minutes with vehicle speed greater than 15 mph (24 km/h).

• With the scan tool, read DTCs.

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

Yes

• Go to Test Step 3 => [ Test Step 3 - WIRELESS IGNITION NODE (WIN) ]

No

• Test Complete.

• Perform TPM Verification Test. Refer to => Non-DTC
Based Diagnostics. Tire Pressure Monitor Verification Test

Test Step 3 - WIRELESS IGNITION NODE (WIN)

• View repair.



Repair

• Replace the wireless ignition node.

• Perform TPM Verification Test. Refer to => Non-DTC
Based Diagnostics. Tire Pressure Monitor Verification Test

Test Step 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, erase DTCs.

• Test Drive the vehicle for a minimum of 20 minutes with vehicle speed greater than 15 mph (24 km/h).

• 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.

• Perform TPM Verification Test. Refer to => Non-DTC
Based Diagnostics. Tire Pressure Monitor Verification Test