Toyota Tundra (2015 year). Manual — part 2844
A
OK
1.
READ OUTPUT DTC (DTC C2174/74)
(a) Turn the ignition switch off.
(b) Connect the Techstream to the DLC3.
(c) Turn the ignition switch to ON and the Techstream on.
(d) Enter the following menus: Chassis / Tire Pressure Monitor / Trouble Codes.
(e) Read DTCs.
Result
RESULT
PROCEED TO
DTC C2174/74 is not output
A
DTC C2174/74 is output
B
NOTICE:
When DTC C2174/74 is output, troubleshoot that DTC first. Then troubleshoot DTCs C2121/21 to
C2124/24.
B
GO TO DTC C2174/74
2.
CHECK FREQUENCY RECEIVING CONDITION
(a) Check if the vehicle is in conditions such as the ones described below:
If the vehicle is located in areas described above, the tire pressure warning light may blink for a minute
and turn on in a particular area.
(2) Devices using similar radio frequencies are used in the vehicle.
OK:
Radio frequency may be interrupted due to the surroundings, or devices installed by the user.
NG
CHECK IF ANY DEVICE IS INSTALLED BY USER
TIRE AND WHEEL: TIRE PRESSURE WARNING SYSTEM: C2121/...
3.
IDENTIFY TRANSMITTER CORRESPONDING TO DTC
(a) Set the tire pressures to the appropriate specified value(s)
.
(b) Turn the ignition switch off.
(c) Connect the Techstream to the DLC3.
(d) Turn the ignition switch to ON and the Techstream on.
(e) Enter the following menus: Chassis / Tire Pressure Monitor / Data List.
(f) Check the values by referring to the table below.
Tire Pressure Monitor
TESTER
DISPLAY
MEASUREMENT ITEM/RANGE
NORMAL
CONDITION
DIAGNOSTIC NOTE
ID 1 Tire
Inflation
Pressure
ID1 tire inflation pressure /
min.: Absolute pressure / 100.00
kPa (1 kgf/cm
2
, 14 psi), Relative
pressure / 0 kPa (0 kgf/cm
2
, 0 psi)
max.: Absolute pressure / 449.35
kPa (4.5 kgf/cm
2
, 63 psi), Relative
pressure / 349.35 kPa (3.6 kgf/cm
2
, 51 psi)
Actual tire
inflation
pressure
If 100 kPa (1 kgf/cm
2
, 14 psi) for the
absolute pressure or 0 kPa (0 kgf/cm
2
, 0
psi) is displayed for the relative pressure,
the data has not been received.*
ID 2 Tire
Inflation
Pressure
ID2 tire inflation pressure /
min.: Absolute pressure / 100.00
kPa (1 kgf/cm
2
, 14 psi), Relative
pressure / 0 kPa (0 kgf/cm
2
, 0 psi)
max.: Absolute pressure / 449.35
kPa (4.5 kgf/cm
2
, 63 psi), Relative
pressure / 349.35 kPa (3.6 kgf/cm
2
, 51 psi)
Actual tire
inflation
pressure
If 100 kPa (1 kgf/cm
2
, 14 psi) for the
absolute pressure or 0 kPa (0 kgf/cm
2
, 0
psi) is displayed for the relative pressure,
the data has not been received.*
ID 3 Tire
Inflation
Pressure
ID3 tire inflation pressure /
min.: Absolute pressure / 100.00
kPa (1 kgf/cm
2
, 14 psi), Relative
pressure / 0 kPa (0 kgf/cm
2
, 0 psi)
max.: Absolute pressure / 449.35
kPa (4.5 kgf/cm
2
, 63 psi), Relative
pressure / 349.35 kPa (3.6 kgf/cm
2
, 51 psi)
Actual tire
inflation
pressure
If 100 kPa (1 kgf/cm
2
, 14 psi) for the
absolute pressure or 0 kPa (0 kgf/cm
2
, 0
psi) is displayed for the relative pressure,
the data has not been received.*
ID 4 Tire
Inflation
Pressure
ID4 tire inflation pressure /
min.: Absolute pressure / 100.00
kPa (1 kgf/cm
2
, 14 psi), Relative
pressure / 0 kPa (0 kgf/cm
2
, 0 psi)
max.: Absolute pressure / 449.35
Actual tire
inflation
pressure
If 100 kPa (1 kgf/cm
2
, 14 psi) for the
absolute pressure or 0 kPa (0 kgf/cm
2
, 0
psi) is displayed for the relative pressure,
the data has not been received.*
TIRE AND WHEEL: TIRE PRESSURE WARNING SYSTEM: C2121/...
A
TESTER
DISPLAY
MEASUREMENT ITEM/RANGE
NORMAL
CONDITION
DIAGNOSTIC NOTE
kPa (4.5 kgf/cm
2
, 63 psi), Relative
pressure / 349.35 kPa (3.6 kgf/cm
2
, 51 psi)
HINT:
*: It may take about 5 to 6 minutes until the values are displayed.
(g) Rapidly reduce the tire pressure for each tire at least 40 kPa (0.4 kgf/cm
2
, 5.8 psi) within 30
seconds.
(h) Check the Data List.
NOTICE:
It may take about 5 to 6 minutes to display the updated tire pressure data.
When no "ID Tire Inflation Pressure" data has changed, reset the tire pressure to the appropriate specified
value and rotate the tire 90 to 270°. Then rapidly release the tire pressure and recheck it.
Record the "ID Tire Inflation Pressure" data transmitter ID that corresponds to each tire.
(i) After confirming that the "ID Tire Inflation Pressure" data for one tire (ID1 to ID4) has changed,
repeat this procedure for the other tires. Identify the transmitter that corresponds to the DTC.
Result
CONDITION
PROCEED TO
All abnormal
A
One or more transmitters are abnormal
B
All normal
C
B
GO TO STEP 5
C
END
4.
CHECK HARNESS AND CONNECTOR (ECU - RECEIVER)
(a) Disconnect the J31 ECU connector.
(b) Disconnect the P17 receiver connector.
TIRE AND WHEEL: TIRE PRESSURE WARNING SYSTEM: C2121/...
OK
(c) Measure the resistance according to the value(s) in the table
below.
Standard Resistance:
TESTER CONNECTION
CONDITION SPECIFIED CONDITION
J31-12 (RDA) - P17-1 (RDA)
Always
Below 1 Ω
J31-11 (GND2) - P17-4 (GND)
Always
Below 1 Ω
J31-6 (RF5V) - P17-5 (+5V)
Always
Below 1 Ω
J31-12 (RDA) - Body ground
Always
10 kΩ or higher
J31-11 (GND2) - Body ground
Always
10 kΩ or higher
J31-6 (RF5V) - Body ground
Always
10 kΩ or higher
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
5.
CHECK TRANSMITTER ID
(a) Turn the ignition switch off.
(b) Connect the Techstream to the DLC3.
(c) Turn the ignition switch to ON and the Techstream on.
(d) Enter the following menus: Chassis / Tire Pressure Monitor / Data List.
(e) Check the values by referring to the table below.
Tire Pressure Monitor
TESTER
DISPLAY
MEASUREMENT
ITEM/DISPLAY
NORMAL CONDITION
DIAGNOSTIC NOTE
Registered ID1
Code
Registered ID1 code/
min.: 0
max.: FFFFFFFF*
The transmitter ID registered in the
transmitter ID1 is displayed
*: Displayed only when the
transmitter ID is not registered.
Registered ID2
Code
Registered ID2 code/
min.: 0
max.: FFFFFFFF*
The transmitter ID registered in the
transmitter ID2 is displayed
*: Displayed only when the
transmitter ID is not registered.
TIRE AND WHEEL: TIRE PRESSURE WARNING SYSTEM: C2121/...
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