The TPMS Module sets DTC C1212 when VS(vehicle speed) signal from ESP(ESC) through CAN communication line is invalid or mismatched with motion sensing indication from TPMS sensors.
Item | Detecting Condition | Possible cause |
DTC Strategy |
•
CAN Signal Check | 1. Faulty ESP(ESC) or EMS system 2. Faulty wheel Speed Sensor 3. CAN communication |
Enable Conditions |
•
VS signal from ESP(ESC) is Invalid for 2.5sec
•
Speed mismatch occurs between VS and motion sensors inside TPMS sensors | |
Threshold value |
•
VS is lower than 3.1MPH(5KPH) AND receiver has received two motion triggered timed RF messages from at least each 3 TPMS tire pressure sensor IDs | |
Diagnostic Time |
•
132 seconds | |
Lamp |
•
Lamp on |
