Welcome to our Tyre Deflation page....
Maintenance
If you have fault with a sensor we can either replace the sensor for approx £75, or we can deinstall the function from your vehicle system, using the genuine equipment and with 100% gaurantee. Rather than paying out to replace each indivdual sensor costing at least £75 you can have the function removed for just £35.
If you have any questions please contact us. Below is a list of components for the trye defaltion system.
What is tyre deflation?
The tyre delation detection function providesthe driver with the following information:
- Abnormal pressure in the tyres,
-Number of tyres not monitored.
The following components are used to perform the deflation detection function:
-A pressure sensor combined to an HF emitter, located in the inflating valve,
-An HF receiver incorporated into the COM 2000,
-The BSI, which compares the pressure information received with pre-programmed units.
System Components
Emitter module
In its HF signal, the emitter module transmits:
-A pressure measurement -An identification code -A function code.
The emitter module has two operation modes:
-Driving -Off.
The emitter module remains in off mode until the start of driving is detected.
The emitter module remains in driving mode for as long as the vehicle is moving and for thirty secondsafter the vehicle has stopped.
The pressure is sampled:
-Every 10-15 seconds in driving mode -Every 15-16 seconds in off mode.
Operation of the emitter module
-Every minute as soon as the vehicle speed is greater than or equal to 20 km/h,
-Every 60-65 minutes when stationary,
-Every 5 seconds maximum if the sampled pressure is abnormal.
The emitter transmits and HF signal to the reciever incorporated into the COM 2000 containing a 45 bit emission frame which consists of the following:
-4 Start bits -1 Seperator bit -5 Function codes -24 Tyre identification code bits -8 Pressure valve bits -2 Checksum bits.
HF receiver
The HF receiver incorporated into the COM 2000 performs the following functions:
-It receives the tyre pressure status information -It decodes the HF signal -It retransmits the decoded information to the BSI via the BODY VAN 1 networks -It checks the cohernece of the frame received by the emitter module - It validates the frame.
The HF receiver incorporated into the COM 2000 receives the tyre pressure status information:
-10 seconds after swtiching the key to the ignition on position if the vehicle is stationary - Immediately if the vehicle speed is greater than zero.
BSI
Deflation function