A 2012 Porsche Panama, the car reported that the tire pressure system did not start. TPM has 4 fault codes: 802102, 802202, 802302, 802402 (no signal reception with wheel device).
Principle analysis:
(A) Vpecker E4
the composition of the tire pressure monitoring system
Tire pressure monitoring system (TPM cited mainly used in the car when driving, timely tire pressure and temperature for automatic monitoring of tire leakage, low pressure, high pressure, high temperature and other dangerous state ahead of warning, to ensure traffic safety. In the process, only keep the tire in the standard pressure to use, as far as SKP1000 possible to avoid the occurrence of puncture accident. TPMS real-time monitoring of all tire pressure, the pressure is too low, high pressure and rapid leakage and other abnormal state alarm , Prompting the driver to deal with in a timely manner, can effectively reduce the risk of puncture accident; and can reduce vehicle fuel consumption, extend tire life, for improving vehicle safety and economy has a greater contribution.
Tire pressure monitoring is divided into two kinds, one is indirect tire pressure monitoring (Wheel-SCEDBased TPMS, referred to as WSB), this system is through the car ABS system wheel speed sensor to compare the speed difference between the tires to achieve Monitor the purpose of tire pressure. When the tire pressure is reduced, the weight of the Lonsdor K518ISE vehicle will make the tire diameter smaller, which will lead to changes in wheel speed, this change can be used to trigger the alarm system to warn the driver. The shortcomings are: static can not be monitored, the dynamic response time up to 20min, four times at the same time gas can not alarm, can not show tire pressure, high false alarm rate (high speed), this type has been phased out. The other is the direct pressure monitoring (Pressure-Sensor Based TPMS, referred to as PSB), in each tire to install XTOOL electronic air pressure sensor, through the wireless transmitter and receiver to achieve air pressure monitoring. Its advantages are: fast response, accurate and intuitive. Porsche PANAMERA tire pressure monitoring system for the direct type
auto diagnostic tool (1)