Checking tire pressure sensors

Fig 1: Identifying Ignition ON

Courtesy of VOLVO CARS OF NORTH AMERICA.

Ignition on.
Each tire pressure sensor has its own ID number and battery voltage status, which are sent to and stored in the Upper electronic module (UEM) Read out the ID numbers for the tire pressure sensors by clicking on the VCT2000 symbol.

Use the following special tools to activate the sensor.
- 9512987
The special tool activates the sensor, which then starts to send information to the Upper Electronic Module (UEM). After activating a sensor, press the "Show data" button for the relevant wheel. Repeat activation for all wheels. Different ID numbers should appear. If the same ID number is displayed as for the previous wheel, activation has failed. Then activate the relevant wheel again and press the "Show data" button again.

NOTE: Do not forget to press the correct button after each wheel has been activated.

NOTE: Make sure no special tools lie under the edge of the rim against the tire where the sensor is installed. Activation will not happen if the tool is placed next to the rim. The tool must then be kept in position for 5 seconds for the signals to be received correctly. Use only one special tool at a time in the vicinity of the vehicle.

NOTE: Avoid positioning the vehicle close to other moving vehicles, the receiver may then receive signals from the sensors of these vehicles. The incorrect ID number may then appear.

Then read off the ID number that is stored for the relevant diagnostic trouble code, by clicking on the diagnostic trouble code in the list. The ID number is then displayed in the window above the list.

Compare the read-out ID number for the relevant wheel with the ID number that is stored with the DTC.

If a sensor does not respond during the test:
- Replace the tire pressure sensor for the relevant wheel. It is probably the sensor that caused the DTC to be stored.
If all sensors respond:
- The sensor that caused the diagnostic trouble code to be stored has probably had an intermittent malfunction. Replace the tire pressure sensor for the relevant wheel.
Other information
- See Tire pressure sensor, replacement
Fig 2: Identifying VCT2000 Diagnostic Tool Symbol In VIDA
Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 3: Identifying Special Tool
Courtesy of VOLVO CARS OF NORTH AMERICA.

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Refer to Verification