2001 TOYOTA SEQUOIA DLC3 Ts

± DIAGNOSTICSTIRE PRESSURE WARNING SYSTEM
DI±807
1001 Author: Date:
2005 SEQUOIA (RM1146U)
4. CONFIRMATION OF TRANSMITTER ID REGISTRATION
(a) Set the tire pressure of all wheels to the specified value.
Tire sizeFrontRearSpare
P245 / 70 R 16220 kPa (2.2 kgf/cm2, 32 psi)240 kPa (2.4 kgf/cm2, 35 psi)240 kPa (2.4 kgf/cm2, 35 psi)
P265 / 70 R 16220 kPa (2.2 kgf/cm2, 32 psi)220 kPa (2.2 kgf/cm2, 32 psi)220 kPa (2.2 kgf/cm2, 32 psi)
P265 / 65 R 17220 kPa (2.2 kgf/cm2, 32 psi)220 kPa (2.2 kgf/cm2, 32 psi)220 kPa (2.2 kgf/cm2, 32 psi)
(b) Connect the hand±held tester to DLC3.
(c) Turn the ignition switch to the ON position.
(d) Select ºSIGNAL CHECKº mode on the hand±held tester (see page DI±810).
(e) Forcibly transmit the transmitter IDs for all wheels.
(1) When rapidly reducing the pressure, remove the valve core (above 20 kPa/15 sec.).
HINT:

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

When rapidly reducing the pressure, remove the valve core (above 20 kPa/15 secs.).
(2) Perform the steps mentioned above to all tires including the spare tire.
(f) Check that test mode DTCs C2181/81, C2182/82, C2183/83, C2184/84 and C2185/85 are all erased.
HINT:

The transmitter ID registration is complete when the test mode DTCs are erased.

If they haven't been erased, reset the tire pressure to the specified value and rotate the tire 90 to 270
degrees. Then forcibly transmit the transmitter IDs of all wheels. If they are still output, register the
transmitter IDs.
(g) Set the tire pressure of all wheels to the specified value.

DIDKL±01
D05981DLC3
Hand±Held
Tester
F19915
DI±810
± DIAGNOSTICSTIRE PRESSURE WARNING SYSTEM
1004 Author: Date:
2005 SEQUOIA (RM1146U)
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 push-
ing 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 hand±held tester to DLC3.
(c) Turn the ignition switch to the ON position.
(d) Select the TEST MODE on hand±held tester.
(e) Perform tire pressure warning reset switch test.
(1) Push the tire pressure warning reset switch.
(2) Check the tire pressure warning indicator lamp.
Test SignalNormal Condition
Tire Pressure Warning Reset Switch
Switch ON: TPWS indicator come on

Switch OFF: TPWS indicator blinking

D05981DLC3
Hand±Held
Tester
± DIAGNOSTICSTIRE PRESSURE WARNING SYSTEM
DI±811
1005 Author: Date:
2005 SEQUOIA (RM1146U)
2. PERFORM SIGNAL CHECK
HINT:

When entering signal check, the tire pressure monitor
ECU sets all the signal check DTCs first.
After completing signal check for each inspection item,
the DTCs that are determined normal by the tire pressure
monitor 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 back to normal mode, all the
signal check DTCs will be erased.
(a) Make sure that the ignition switch is off.
(b) Connect the hand±held tester to DLC3.
(c) Turn the ignition switch to the ON position.
(d) Select the SIGNAL CHECK on hand±held tester.

D13491
DLC3:
BAT
SIL CG
DIDK3±01
F19148
Combination Meter
Tire Pressure
Warning Lamp DI±816
± DIAGNOSTICSTIRE PRESSURE WARNING SYSTEM
1010 Author: Date:
2005 SEQUOIA (RM1146U)
DIAGNOSIS SYSTEM
1. CHECK BATTERY VOLTAGE
Battery voltage: 11 to 14 V
If the voltage is below 11 V, recharge the battery before pro-
ceeding.
2. CHECK DLC3
The vehicle's tire pressure monitor ECU uses ISO 9141±2 for
communication. The terminal arrangement of DLC3 complies
with SAE J1962 and matches the ISO 9141±2 format.
Verify the conditions listed in the table below:
Terminal No.Disc.Connection / Voltage or ResistanceCondition
7SILBus + Line / Pulse generationDuring transmission
4CGChassis Ground to Body Ground / 1 W or lessAlways
16BATBattery Positive to Body Ground / 10 to 14 VAlways
HINT:
If the hand±held tester display shows UNABLE TO CONNECT
TO VEHICLE when the cable of the hand±held tester is con-
nected to DLC3, the ignition switch is turned to the ON position
and the tester is operated, there is a problem on the vehicle side
or tester side.

If communication is normal when the tester is connected
to another vehicle, inspect DLC3 on the original vehicle.

If communication is still not possible when the tool is con-
nected to another vehicle, the problem is probably in the
tester itself, so consult the Service Department listed in
the tester's instruction manual.
3. DIAGNOSIS SYSTEM
(a) Warning lamp
(1) The tire pressure warning lamp blinks when there is
any malfunction in the tire pressure warning sys-
tem.
NOTICE:
When the malfunction has been corrected, the tire pres-
sure warning lamp does not come on.
(b) DTCs (Normal mode)
(1) DTCs are memorized in the tire pressure monitor
ECU and read by the blinks of the tire pressure
warning lamp or using the hand±held tester (see
page DI±820.
(c) Test mode
(1) By switching from normal mode into test mode (in-
put signal check), you can inspect the tire pressure
monitor receiver assy, each tire pressure monitor
valve sub±assy and vehicle speed sensor (see
page DI±810).

DIDK4±01
D13491
DLC3:
CG TC
F19148
Combination Meter
Tire Pressure
Warning Lamp
F19128
ON0.25 sec.
OFF
0.25 sec.
0.5 sec.
1.5 sec.4.5 sec. 2.5 sec.
0.5 sec. ON
OFF Normal System Code:
Code 13 and 33:
1.5 sec.
Repeat
D05981DLC3
Hand±Held
Tester
DI±820
± DIAGNOSTICSTIRE PRESSURE WARNING SYSTEM
1014 Author: Date:
2005 SEQUOIA (RM1146U)
DTC CHECK / CLEAR
1. DTC CHECK (USING SST CHECK WIRE)
(a) Check DTCs.
(1) Using the SST, connect terminals TC and CG of
DLC3.
SST 09843±18040
(2) Turn the ignition switch to the ON position.
(3) Read and record any DTCs from the tire pressure
warning lamp on the combination meter. Refer to
the illustration on the left for examples of a normal
system code and codes 13 and 33.
HINT:

If the tire pressure warning lamp does not blink any DTCs
or the normal system code, inspect the tire pressure
warning lamp circuit or TC terminal circuit.
Trouble AreaSee page
Tire pressure warning lamp circuitDI±873
TC terminal circuitDI±888

If 2 or more malfunctions are indicated at the same time,
the lowest numbered DTC is displayed first.
(4) Refer to the Diagnostic Trouble Code Chart (see
page DI±825) for DTC information.
(5) After completing the check, turn the ignition switch
off and remove the SST from DLC3.
SST 09843±18040
2. DTC CHECK (USING HAND±HELD TESTER)
(a) Check DTCs.
(1) Connect the hand±held tester to the DLC3.
(2) Turn the ignition switch to the ON position.
(3) Read the DTCs following the prompts on the tester
screen.
HINT:
Refer to the hand±held tester operator's manual for further de-
tails.

± DIAGNOSTICSTIRE PRESSURE WARNING SYSTEM
DI±821
1015 Author: Date:
2005 SEQUOIA (RM1146U)
3. DTC CLEAR
HINT:
After repairing the malfunctions, clear the DTCs.
(a) Connect the hand±held tester to DLC3.
(b) Turn the ignition switch to the ON position.
(c) Erase the DTCs following the prompts on the tester
screen.
HINT:
Refer to the hand±held tester operator's manual for further de-
tails.

DIDK5±01
DI±822
± DIAGNOSTICSTIRE PRESSURE WARNING SYSTEM
1016 Author: Date:
2005 SEQUOIA (RM1146U)
DATA LIST / ACTIVE TEST
1. DATA LIST
(a) Connect the hand±held tester to DLC3.
(b) Turn the ignition switch to the ON position.
(c) Following the display on the hand±held tester, read the ºDATA LISTº.
ItemMeasurement item/
Range (Display)Normal ConditionDiagnostic Note
MODE STATUS
Tire pressure warning system
mode/NORMAL or REG 2nd or
REG M or TESTNORMAL: Normal mode
TEST: Test mode±
MAIN TIRENumber of main tire ID to be regis-
tered/0 or 1 or 2 or 3 or 4 or 50 to 5 should be displayed±
2ND TIRENumber of 2ND tire ID to be regis-
tered/0 to 1 or 2 or 3 or 4 or 50 to 5 should be displayed±
SELECT SWSelect switch/Main, 2ndMain±
INITIAL SWInitialization switch/ON, OFFON: Switch on
OFF: Switch off±
VEHICLE SPEED
Vehicle speed reading/
min.: 0 km/h (0 mph),
max.: 255 km/h (158 mph)
Actual vehicle speedSpeed indicated on the
combination meter
REGIT ID1 CODERegistered ID1 code/min.: 0,
max.: FFFFFFFThe ID No. registered in the trans-
mitter ID1 is displayed±
REGIT ID2 CODERegistered ID2 code/min.: 0,
max.: FFFFFFFThe ID No. registered in the trans-
mitter ID2 is displayed±
REGIT ID3 CODERegistered ID3 code/min.: 0,
max.: FFFFFFFThe ID No. registered in the trans-
mitter ID3 is displayed±
REGIT ID4 CODERegistered ID4 code/min.: 0,
max.: FFFFFFFThe ID No. registered in the trans-
mitter ID4 is displayed±
REGIT ID5 CODERegistered ID5 code/min.: 0,
max.: FFFFFFFThe ID No. registered in the trans-
mitter ID5 is displayed±
TRANS STATUSID code transmission status/
FINISH or NOWFINISH or NOW±
TIREPRESS1
ID1 tire inflation pressure/
min.: 0 kPa (0 kgfVcm2, 0 psi),
max.: 637.5 kPa (6.48 kgfVcm2,
92.2 psi)Actual tire inflation pressure±
TIREPRESS2
ID2 tire inflation pressure/
min.: 0 kPa (0 kgfVcm2, 0 psi),
max.: 637.5 kPa (6.48 kgfVcm2,
92.2 psi)Actual tire inflation pressure±
TIREPRESS3
ID3 tire inflation pressure/
min.: 0 kPa (0 kgfVcm2, 0 psi),
max.: 637.5 kPa (6.48 kgfVcm2,
92.2 psi)Actual tire inflation pressure±
TIREPRESS4
ID4 tire inflation pressure/
min.: 0 kPa (0 kgfVcm2, 0 psi),
max.: 637.5 kPa (6.48 kgfVcm2,
92.2 psi)Actual tire inflation pressure±
TIREPRESS5
ID5 tire inflation pressure/
min.: 0 kPa (0 kgfVcm2, 0 psi),
max.: 637.5 kPa (6.48 kgfVcm2,
92.2 psi)Actual tire inflation pressure±

F19136
Tire Pressure Monitor ECU:
T17
SPD
F19755
C5±20Combination
Meter
C5
± DIAGNOSTICSTIRE PRESSURE WARNING SYSTEM
DI±871
1065 Author: Date:
2005 SEQUOIA (RM1146U)
INSPECTION PROCEDURE
NOTICE:
It is necessary to register an ID code after replacing the tire pressure monitor valve sub±assy and/or
the tire pressure monitor ECU (see page DI±805).
HINT:
When not using the hand±held tester, go to step 2.
1 Read value on hand±held tester.
PREPARATION:
(a) Connect the hand±held tester to the DLC3.
(b) Turn the ignition switch to the ON position, and push the hand±held tester main switch ON.
(c) Select the item below in the DATA LIST, and read its value displayed on the hand±held tester.
TIRE PRESSURE:
ItemNormal Condition
VEHICLE SPEEDActual vehicle speed
CHECK:
Check that the values indicated on the tester and the combination meter are the same.
OK:
Indicates actual speed.
OK Replace tire pressure monitor ECU
(See page SA±20).
NG
2 Check harness and connector (Tire pressure monitor ECU ± Combination meter
assy).
PREPARATION:
Disconnect the combination meter assy C5 connector and tire
pressure monitor ECU T17 connector.
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:
Tester ConnectionSpecified Condition
T17±3 (SPD) ± C5±20Below 1 W
T17±3 (SPD) ± Body ground10 kW or higher