Tread Lamp
| - |
Tire Under Inflation / Leak Warning. 
|
| 1. |
Turn on condition
| A. |
When tire pressure is below allowed threshold |
| B. |
When rapid leak is detected by the sensor. |
|
| 2. |
Turn off condition
| A. |
Under-inflation ; When tire pressure is above (warning threshold + hysteresis). |
| B. |
Rapid Leak ; When tire pressure is above (leak warning threshold). |
|
Wheel Location
| 1. |
Turn on condition
| A. |
At the same time as TREAD Lamp. |
| B. |
Indicates wheel location where under inflation / leak has occurred. |
|
| 2. |
Turn off condition
| A. |
At the same time as TREAD Lamp. |
|
If wheel locations change in between Ignition cycles, then
the system assumes the previous Auto-Located position. Once
Auto-Location completes on the current Ignition cycle, the correct lamp
will be lit. |
|
DTC Warning
| 1. |
Turn on condition
| A. |
When the system detects a fault that is external to the receiver / initator / sensor. |
| B. |
When the system detects a receiver fault. |
| C. |
When the system detects an initiator fault. |
| D. |
When the system detects a sensor fault. |
|
| 2. |
Turn off condition
| A. |
If the fault is considered as 'critical', then the lamp is
held on throughout the current Ignition cycle (even if the DTC has been
demoted). This is because it is important to bring the problem to the
drivers attention. On the following Ignition cycle, the demotion
conditions will be re-checked. If the demotion conditions occur, the
lamp will be turned off. It will be held on until DTC demotion checking
is completed. |
| B. |
'Non critical' faults are those that can occur temporarily
e.g. vehicle battery under voltage. The lamp is therefore turned off
when the DTC demotion condition occurs. |
|
System Fault
| 1. |
General Function
| A. |
The system monitors a number of inputs across time in order to determine that a fault exists. |
| B. |
Faults are prioritized according to which has the most likely cause. |
| C. |
Maximum fault store is equal to 15. |
| D. |
Certain faults are not covered through DTC. The main ones are: |
| 1) |
Sensor thermal shutdown (239°F/115°C) |
| 2) |
Ignition Line stuck ; requires observation of lamps at Ignition ON to diagnose. |
|
|
Circuit Diagram
NO.Function1BAT.2IGN3CAN_High4CAN_Low5GND6-
...
Description
1.
General description
(1)
WU is a sensor placed in the tire that reports pressure and temperature.
(2)
The WU is mounted inside the wheels, fixed to the valve. The angle between ...
Hyundai Equus: Description and Operation
Second generation VI (2009–2024) / Hyundai Equus VI 2009-2024 Service Manual / Suspension System / Tire Pressure Monitoring System / Description and Operation
Schematic Diagrams
TPMS Sensor Description and Operation