Toyota Tundra. Manual — part 2764

TIRE PRESSURE MONITOR TABLE

Tester

Display

Measurement Item/Range

Normal

Condition

Diagnostic Note

ID1 Tire
Inflation

Pressure

ID1 tire inflation pressure /
min.: Absolute pressure/100 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.*

ID2 Tire
Inflation

Pressure

ID2 tire inflation pressure /
min.: Absolute pressure/100 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.*

ID3 Tire
Inflation

Pressure

ID3 tire inflation pressure /
min.: Absolute pressure/100 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.*

ID4 Tire
Inflation

Pressure

ID4 tire inflation pressure /
min.: Absolute pressure/100 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.*

HINT:



The initialization is complete when the Data List "ID Tire Inflation Pressure" display shows
the correct pressures.



*: It may take up to about 5 to 6 minutes to update the tire pressure data. If the values are
not displayed after about 5 to 6 minutes, perform troubleshooting according to the
inspection procedure for DTCs C2121/21 to C2124/24 (See DTC C2121/21, C2122/22,
C2123/23, C2124/24, C2181/81, C2182/82, C2183/83, C2184/84: NO SIGNAL FROM

2009 Toyota Tundra

2009 SUSPENSION Tire & Wheel - Tundra

TEST MODE PROCEDURE

1. TEST MODE PROCEDURE

HINT:



Operation of the tire pressure warning reset switch can be checked in Test Mode.



During Test Mode, the system is not initialized by pushing the tire pressure warning reset switch.
The circuit of the tire pressure warning reset switch can be inspected during this mode.

a. Turn the ignition switch off.

b. Connect the Techstream to the DLC3.

c. Turn the ignition switch to ON.

d. Check that the tire pressure warning light turns on for 3 seconds and then goes off.

e. Turn the Techstream on.

f. Enter the following menus: Chassis/Tire Pressure Monitor/Utility/Signal Check.

g. Confirm that the tire pressure warning light in the combination meter blinks at 0.125 second

intervals.

Fig. 13: Tire Pressure Warning Light Blinking Pattern
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

2. PERFORM SIGNAL CHECK

HINT:



When entering Signal Check mode, the tire pressure warning ECU stores all the Test Mode DTCs
first. After completing the signal check for each inspection item, the DTCs for systems that are
determined to be normal by the tire pressure warning ECU will be cleared.

The DTCs for other inspection items may not be cleared when only a certain signal is inspected.

TRANSMITTER ID1; NO SIGNAL FROM TRANSMITTER ID2; NO SIGNAL
FROM TRANSMITTER ID3; NO SIGNAL FROM TRANSMITTER ID4;
TRANSMITTER ID1 NOT RECEIVED (TEST MODE DTC); TRANSMITTER ID2
NOT RECEIVED (TEST MODE DTC); TRANSMITTER ID3 NOT RECEIVED
(TEST MODE DTC); TRANSMITTER ID4 NOT RECEIVED (TEST MODE DTC) ).

2009 Toyota Tundra

2009 SUSPENSION Tire & Wheel - Tundra



When signal check returns to normal mode, all the Test Mode DTCs will be cleared.

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/Utility/Signal Check.

HINT:

Every time the Test Mode DTC clear conditions are satisfied, the tire pressure warning light turns
on for 1 second. Then, the tire pressure warning light blinks at 0.125 second intervals.

e. Drive the vehicle at 20 km/h (12 mph) or more for 3 seconds or more to check the vehicle speed

signal (C2191/91).

f. Loosen the valve core and rapidly reduce the pressure (at least 40 kPa (0.4 kgf/cm

2

, 5.8 psi) within

30 seconds) to check the transmitter data (C2181/81 to C2184/84).

HINT:

The transmitter ID can be transmitted by rapidly reducing the tire pressure.

g. Check that the tire pressure warning system Test Mode DTCs are cleared.

TEST MODE DTC TABLE

h. Check the tire pressure warning reset switch.

1. Press the tire pressure warning reset switch.

2. Check the tire pressure warning light.

TEST SIGNAL NORMAL CONDITION TABLE

i. Result

HINT:

Test Mode DTC

Test Signal

Test Mode DTC Clear Condition

C2181/81 to

C2184/84

Transmitter Data

Receive data from the transmitter which has a registered ID in
the tire pressure warning ECU

C2191/91

Vehicle Speed

Signal

Vehicle speed of 20 km/h (12 mph) or more is detected for 3
seconds or more

Test Signal

Normal Condition

Tire Pressure Warning Reset

Switch



Switch ON: Tire pressure warning light turns on.



Switch OFF: Tire pressure warning light blinks at 0.125
second intervals.

2009 Toyota Tundra

2009 SUSPENSION Tire & Wheel - Tundra

After the signal check is completed, check for a Test Mode DTC to confirm the system status.

PROCEDURE TABLE

j. End of Signal Check

1. After completing the Test Mode (Signal Check), turn the ignition switch off and disconnect

the Techstream.

k. DTC of Signal Check (Test Diagnosis)

1. If a trouble code is displayed during the Test Mode DTC check, check the circuit listed for

that code. For details of each code, refer to the table below.

DTC TABLE

Condition

Procedure

Test Mode DTC is output

Repair the faulty part and enter Signal Check again

Test Mode DTCs are cleared No problem

DTC Code

Detection Item

Trouble Area

C2181/81

Transmitter ID1 not

received



Tire pressure
warning valve
and
transmitter



Tire pressure
warning
antenna and
receiver



Wire harness
or connector



Tire pressure
warning ECU

C2182/82

Transmitter ID2 not

received



Tire pressure
warning valve
and
transmitter



Tire pressure
warning
antenna and
receiver



Wire harness
or connector



Tire pressure
warning ECU



Tire pressure
warning valve
and

2009 Toyota Tundra

2009 SUSPENSION Tire & Wheel - Tundra