2013 SSANGYONG KORANDO Service Manual

3. TPMS ECU I/O DIAGRAM

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4. TPMS PRESSURE VALUE DISPLAYING PROCESS
The TPMS ECU receives the tire pressure value from the wheel module through the wireless
transmission once every about 30 seconds and displays the pressure value on the instrument cluster
through CAN line.
Under normal circumstances, it transmits the tire pressure value and temperature value together
with its ID (Identification) once every about 30 seconds to reduce the load on the wheel module's
battery. But, in the event of emergency or situation which should give a warning to the driver, it
transmits the data once every about 1 second. Since the battery consumption will be increased
rapidly until the data transmission interval will be returned to normal after certain length of time,
adjust the tire pressure to the specified one after rectifying the cause.
The tire pressure is displayed through the following sequences, which occur at the same
time.
Wheel module detection
(Auto learning)This is a step which receives an ID signal from the wheel module fitted
to the vehicle. When the wheel module sends the signal about twice
every 1 minute, each wheel module will be identified.
Wheel module mounting
location detection
(Auto location)The TPMS ECU check which wheel module is installed to which tire.

5. LOW TIRE PRESSURE WARNING
If the tire pressure is less than 13% of the proper value calculated by the TPMS ECU depending on the
ambient temperature for more than 8 minutes, the 1st low tire pressure warning is given. And, if the tire
pressure is less than 20% for more than 4 minutes, the 2nd warning is given. At this time, the "Check
tire" message is displayed on the DOT LCD display and the global warning lamp comes on.
ECU receives the ambient temperature signal from the instrument cluster through CAN
communication and calculates the proper tire pressure to correct it since the tire pressure changes
depending on the ambient temperature.

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Display on cluster
TPMS warning lamp
Global warning lamp
DOT LCD display
6. DISPLAY AND WARNING LAMPS RELATED TO TPMS
This lamp comes on when the engine is initially started or the ignition
switch is pressed ON (for about 4.0 seconds). Then, it goes off if the
system is normal.
It comes on if an error occurs in any component related to the TPMS
regardless of tire inflation pressure. -
-
This lamp comes on when the engine is initially started or the ignition
switch is pressed ON (for about 4.0 seconds). Then, it goes off if the
system is normal.
In the event of TPMS system (including sensor) failure, it flashes for 70
seconds at interval of 0.4 seconds and comes on.
Comes on when the tire pressure is low. -
-
-
It informs the driver of current tire pressure and abnormalities such as
loss or over inflation by displaying them on the display.
The driver can see the current tire pressure by pressing the TRIP
switch (press for 80 ms~1 sec.). -
-
DOT LCD display presentation sequence
Supervision type

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Display on cluster
TPMS warning lamp
Global warning lamp
DOT display
This lamp comes on when the engine is initially started or the ignition
switch is pressed ON (for about 4.0 seconds). Then, it goes off if the
system is normal.
It comes on if an error occurs in any component related to the TPMS
regardless of tire inflation pressure. -
-
This lamp comes on when the engine is initially started or the ignition
switch is pressed ON (for about 4.0 seconds). Then, it goes off if the
system is normal.
In the event of TPMS system (including sensor) failure, it flashes for 70
seconds at interval of 0.4 seconds and comes on.
Comes on when the tire pressure is low. -
-
-
The tire pressure for front wheels is displayed on the LCD display. The
tire pressure for rear wheels is displayed when pressing the Trip switch. -
Standard type
DOT display presentation sequence

1) DOT LCD Display Related to TPMS
Status DOT LCD display Condition & illumination method
Correct tire pressureThe specified tire pressure is based on a
cold tire with the vehicle unloaded (no
Excessive tire pressureCorresponding status lamp blinks with
reverse shading at interval of 0.4 seconds if
tire pressure is 50 psi or higher
Low tire pressureWhen tire pressure is less than 13~20% of
specified value for a period of time,
corresponding status lamp blinks with
reverse shading for 70 seconds at interval o
f
0.4 seconds
Lower than minimum tire
pressureCorresponding status lamp comes on if tire
pressure is 24 psi or less
Sudden tire pressure lossCorresponding status lamp blinks with
shading reverse at interval of 0.4 seconds if
tire pressure changes more than 3 psi per 1
minute at speed of 0 km/h or above.
Imbalance between left and
right tire pressureCorresponding status lamps blink
alternately at interval of 1.0 second if tire
pressure differs by more than 4 psi in the left
and right tires while driving for more than 10
minutes
Impossible to determine tire
pressurePressure of the tire displayed as "--" when
not possible to determine tire pressure
correctly
* At initial start, the tire pressure can be
displayed after 10 minutes of driving at
speed of 20 km/h or higher
Supervision type

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Standard type
Status Operating conditions Display
Tire pressure
displayAt initial start (more than 20 minutes have
elapsed after ignition off), the tire pressure is
not determined. It can be displayed after 10
minutes of driving at speed of 20 km/h or
higher.
FR - display
RR - displayIf the tire pressure is abnormal when it is not
The standard type instrument cluster shows
Low tire pressure warning
If the tire pressure is less than 13% of the proper value for more than 8 minutes, the 1st low tire
pressure warning is given. And, if the tire pressure is less than 20% for more than 4 minutes, the
2nd warning is given. The message "Check tire" is displayed on the instrument cluster DOT LCD
display.
(see "LOW TIRE PRESSURE WARNING in this section)
Priority of TPMS warnings
The situation can occur in which two warning messages are displayed depending on the vehicle
condition. If this happen, the warning messages are displayed according to the priority below.