Century V6-3100 3.1L VIN M SFI (1998)
Tire Monitoring System: Description and Operation
The Electronic Brake Control Module/Electronic Brake Traction Control Module (EBCM/EBTCM) uses the wheel speed sensors to determine if a low
tire pressure condition exists. After the vehicle has been driven for at least 13 kilometers (8 miles), the EBCM/EBTCM compares the wheel speed
sensor inputs to the normal conditions. If the EBCM/EBTCM senses a change in wheel speed at one wheel comparable to a change in tire pressure of at
least 84 kPa (12 psi) from the other three tires. The EBCM/EBTCM will then send a signal through the serial data (Class II) circuit 1122, the splice pack
SP205, and circuit 1036 to the instrument cluster, telling it to turn on the LOW TIRE indicator. The serial data (Class II) can be accessed using the scan
tool connected to the Data Link Connector (DLC) on terminal 2. Once the LOW TIRE indicator is turned on and then the low tire is repaired or
replaced, the indicator can be turned off by using the tire inflation reset switch in the fuse block. Pressing this applies a ground from G203 through
circuit 1550, the switch, and circuit 1055 to connector C1 terminal B10 of the EBCM/EBTCM. The EBCM/EBTCM will flash the indicator 3 times and
then turns off the signal to the LOW TIRE indicator.
