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TIRE AND WHEEL – TIRE PRESSURE WARNING VALVE AND TRANSMITTERTW–85
TW
(b) Install the washer on the tire pressure warning valve
and transmitter from the rim side and tighten the
nut.
Torque: 4.0 N*m (41 kgf*cm, 35 in.*lbf)
NOTICE:
• No further tightening is required once the nut
is tightened to the specified torque.
• Check that there is no foreign matter on the
washer and nut.
• If replacing the tire pressure warning valve
and transmitter, make sure that the new
grommet, washer, and nut are used.
• Check that there is no oil, water, or lubricant
around the rim hole, tire pressure warning
valve and transmitter, washer, and nut.
Failing to do so may result in improper
installation.
(c) Set the wheel disc to the mounting machine and
install the lower tire bead. Position the main body of
the tire pressure warning valve and transmitter in
the shaded area shown in the illustration.
NOTICE:
• If the tire pressure warning valve and
transmitter is positioned outside this area, it
will be interfered with the tire bead, and may
cause damage to the tire pressure warning
valve and transmitter.
• If the use of lubricant is required when
installing the bead, do not apply the lubricant
directly to the tire pressure warning valve and
transmitter.
(d) Install the upper bead.
NOTICE:
Make sure that the tire bead and tool do not
interfere with the main body of the tire pressure
warning valve and transmitter and that it is not
clamped by the bead.
(e) After the tire is inflated, the valve nut may be loose.
Retighten the nut to the specified torque and then
check for air leaks with soapy water.
Torque: 4.0 N*m (41 kgf*cm, 35 in.*lbf)
NOTICE:
No further tightening is required once the nut is
tightened to the specified torque.
2. INSTALL FRONT WHEEL
Torque: 103 N*m (1050 kgf*cm, 76 ft.*lbf)
3. INSTALL REAR WHEEL
Torque: 103 N*m (1050 kgf*cm, 76 ft.*lbf)
4. INSPECT TIRES
HINT:
See page TW-2.
C156696E01
C137868E01
Page 2338 of 3000
TW–86TIRE AND WHEEL – TIRE PRESSURE WARNING VALVE AND TRANSMITTER
TW
5. REGISTER TRANSMITTER ID
HINT:
See page TW-20.
6. INSPECT TIRE PRESSURE WARNING SYSTEM
HINT:
See page TW-25.
Page 2339 of 3000
TIRE AND WHEEL – TIRE PRESSURE WARNING VALVE AND TRANSMITTERTW–87
TW
DISPOSAL
HINT:
The tire pressure warning valve and transmitter is powered
by a lithium battery. When disposing of the tire pressure
warning valve and transmitter, remove the battery and
dispose of it correctly.
1. DISPOSE OF TIRE PRESSURE WARNING VALVE
AND TRANSMITTER
(a) Use the tip of a screwdriver to pry off the back
cover.
(b) The battery and base board covered with resin are
exposed. While taking out the battery, cut the 2
terminals that connect the battery to the base board.
C156694
C156695E01
Page 2340 of 3000

TW–28TIRE AND WHEEL – TIRE PRESSURE WARNING SYSTEM
TW
TEST MODE PROCEDURE
1. ENTER TEST MODE
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) Make sure that the ignition switch is off.
(b) Connect the intelligent tester to DLC3.
(c) Turn the ignition switch to the ON position.
(d) Check that the tire pressure warning light comes on
for 3 seconds and then goes off.
(e) Select the TEST MODE on the intelligent tester.
(f) Confirm that the tire pressure warning light in the
combination meter blinks at 0.125-second intervals.
2. PERFORM SIGNAL CHECK
HINT:
• When entering signal check mode, the tire pressure
warning ECU sets all the signal check DTCs first.
After completing signal check for each inspection
item, the DTCs for systems that are determined to be
normal by the tire pressure warning ECU will be
erased.
The DTCs for other inspection items may not be
erased when only a certain signal is inspected.
• When signal check returns to normal mode, all the
signal check DTCs will be erased.
(a) Make sure that the ignition switch is off.
(b) Connect the intelligent tester to DLC3.
(c) Turn the ignition switch to the ON position.
C122887
F100632E04
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TIRE AND WHEEL – TIRE PRESSURE WARNING SYSTEMTW–29
TW
(d) Select the SIGNAL CHECK on the intelligent tester.
HINT:
Every time the test mode DTC clear conditions are
satisfied, the tire pressure warning light comes on
for 1 second. Then, the tire pressure warning light
blinks at 0.125-second intervals.
(e) Drive the vehicle at 12 mph (20 km/h) or more for 10
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 (0.41 kg/cm
2, 5.8 psi)
within 30 seconds or more) 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 erased.
(h) Check the tire pressure warning reset switch.
(1) Press the tire pressure warning reset switch.
C110644
Test Mode DTC Test Signal Test Mode DTC Clear Condition
C2181/81 to C2184/84 Transmitter DataData is received from the transmitter which has a registered ID in
the tire pressure warning ECU
C2191/91 Vehicle Speed SignalVehicle speed of 12 mph (20 km/h) or more is detected for 3
seconds or more
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TW–30TIRE AND WHEEL – TIRE PRESSURE WARNING SYSTEM
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(2) Check the tire pressure warning indicator light.
(i) Result
HINT:
After the signal check is completed, check for a
signal check DTC to confirm the system status.
(j) End of SIGNAL CHECK
After completing the test mode (SIGNAL CHECK),
turn the ignition switch off and disconnect the tester.
DTC of SIGNAL CHECK (TEST DIAGNOSIS)
function:
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 relevant page listed
under respective "DTC No." in the chart.
Test Signal Normal Condition
Tire Pressure Warning Reset Switch• Switch ON: TPWS indicator comes on
• Switch OFF: TPWS indicator blinks at 0.125
Condition Procedure
SIGNAL CHECK DTC is output Repair the faulty part and enter SIGNAL CHECK again
SIGNAL CHECK DTCs are cleared No problem
DTC No. Detection Item Trouble Area See procedure
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 ECUTW-42
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 ECUTW-42
C2183/83 Transmitter ID3 not received• Tire pressure warning valve and transmitter
• Tire pressure warning antenna and receiver
• Wire harness or connector
• Tire pressure warning ECUTW-42
C2184/84 Transmitter ID4 not received• Tire pressure warning valve and transmitter
• Tire pressure warning antenna and receiver
• Wire harness or connector
• Tire pressure warning ECUTW-42
C2191/91 Vehicle speed signal error• Vehicle speed sensor
• Combination meter assembly
• Wire harness or connector
• Tire pressure warning ECUTW-70
Page 2343 of 3000
TIRE AND WHEEL – TIRE PRESSURE WARNING ECUTW–87
TW
SUSPENSION & AXLE
TIRE AND WHEEL
TIRE PRESSURE WARNING ECU
COMPONENTS
C155500E01
Page 2344 of 3000
TW–88TIRE AND WHEEL – TIRE PRESSURE WARNING ECU
TW
REMOVAL
NOTICE:
Before removing the tire pressure warning ECU, read the
registered transmitter IDs of all wheels and write them
down to use for re-registration of transmitter IDs (See
page TW-20).
1. DISCONNECT CABLE FROM NEGATIVE BATTERY
TERMINAL
CAUTION:
Wait at least 90 seconds after disconnecting the
cable from the negative (-) battery terminal to
prevent airbag and seat belt pretensioner activation.
2. REMOVE INSTRUMENT PANEL SAFETY PAD SUB-
ASSEMBLY
HINT:
Refer to the instructions for REMOVAL of the instrument
panel safety pad (See page IP-5).
3. REMOVE TIRE PRESSURE WARNING ECU
(a) Remove the screw.
(b) Disconnect the connector and remove the tire
pressure warning ECU.
INSTALLATION
1. INSTALL TIRE PRESSURE WARNING ECU
(a) Connect the connector to the tire pressure warning
ECU.
C156706
C156707
C156707