The TPMS Module sets DTC C1121 when the voltage of TPMS Sensor1 battery is below 2.2 V.
Item | Detecting Condition | Possible cause |
DTC Strategy |
•
Monitoring the battery of TPMS sensor | 1. TPMS sensor1 battery low |
Enable Conditions |
•
The lowest sensor's temperature which is recently measured is greater than -4℉(–20℃)
•
The distance travelled during 9 minutes is higher than 1.86 Mile (3 km) | |
Threshold value |
•
When battery voltage of sensor is less than 2.2V and if TPMS Module receives the signal of sensor 2times consecutively for 2 minutes. | |
Diagnostic Time |
•
2 minutes | |
Lamp |
•
Lamp off |
