Fault-Tracing Information
Fault-tracing
Checking the remote receiver
The remote receiver is located on top of and in the trailing edge of the headlining. The remote receiver is connected to Central electronic module (CEM) or to Keyless vehicle module (KVM) depending on the vehicle's configuration.
Check whether the diagnostic trouble codes for missing communication with the remote control are stored in the Central electronic module (CEM) or in the Keyless vehicle module (KVM), depending on the configuration of the vehicle.
Check that the remote receiver works by pressing the lock and unlock button on the remote control. The vehicle should be locked and unlocked.
Note! Fault-trace the symptoms first, if the remote control and receiver are not working.
Does the remote control and remote receiver work?
Yes - Checking tire pressure sensors
No - DONE
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Checking tire pressure sensors
- Ignition on.
Each tire pressure sensor has its own id-number which is sent and stored in central electronic module (CEM).
First read out the frozen values for the diagnostic trouble code under the tab DIAGNOSTICS and note the ID number of the sensor that has caused the diagnostic trouble code to be stored.
Use the special tool and activate one sensor at a time for all four wheels, to read out the ID numbers of the installed sensors.
Note!
- When a new tire pressure sensor is installed, it must be activated from its transport mode. The sensor can only be activated using the special tool: 951 2987 TPMS tool 951 2987 TPMS Tool
- Erase any old readings in the tool before starting reading.
- Use only one special tool at a time in the vicinity of the vehicle.
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
- Pressure sensor tire Service and Repair
Continue - Verification
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Fault-tracing information
Attempt New Test - Checking the remote receiver
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Verification
Verification
Hint: After carrying out the repair, check that the fault has been remedied.
- Ignition off
- Reinstall the connectors, components etc.
- Ignition on.
Read off the last stored ID number by clicking on the VCT2000 symbol. The last stored ID number is displayed until a new ID number is received and stored.
Note! The last stored value is erased when the ignition is switched off and on again.
Use the following special tools to activate the sensor.
- 951 2987 TPMS tool 951 2987 TPMS Tool
Note! When a new tire pressure sensor is installed, it must be activated from its transport mode. The sensor can only be activated using the special tool: 951 2987 TPMS tool 951 2987 TPMS Tool
The special tool activates the sensor which starts to send information to the central electronic module (CEM) and the sensor's id-number can then be read in the upper character window.
Note! Ensure that the special tool is positioned under the edge of the rim against the tire where the sensor is installed. The sensor will not be activated if the tool is against the rim. The sensor must then be held in place for approximately 5 seconds for the signals to be correctly received.Use only one special tool at a time in the vicinity of the car.
Note! Carry out the above in an area away from where other cars are being driven. The receiver can pick up signals from sensors on other cars. An incorrect ID number would then be displayed.
Check that the relevant sensor(s) respond. Test different wheels to ensure that different ID numbers are displayed.
Is the sensor OK?
Yes - VERIFIED
No - VERIFICATION FAILED
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VERIFIED - FAULT FOUND
VERIFICATION FAILED - Fault-tracing information
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