Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

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Tire Monitoring System: Testing and Inspection





System self diagnosis

Possible to detect abnormal situations from Sensor data
- High Temperature - Sensor's temperature is more than 100 °C
- Battery Low - Sensor's battery is less than 2.1v
- Sensor Failure

ECU can be detected any abnormal situation by the periodic inspection
- Auto Learning Failure - 4 ID not learn in 19 minutes
- Sensor Mute Failure - Not received frame for 17 minutes
- RF IC Failure - 4 sensor mute DTC occurred and RF IC not respond
- ECU Under/Over voltage - IG_ON < 9V for 2 sec or IG_ON > 16V for 2sec
- EEPROM Failure - EEPROM IC not respond or CRC Check error
- CAN Bus Failure

Warning Condition
- Low Pressure