Toyota Sequoia (2005). Manual — part 258
DIDK7–01
–
DIAGNOSTICS
TIRE PRESSURE WARNING SYSTEM
DI–827
1021
CIRCUIT INSPECTION
DTC
C2111/11 Transmitter ID1 Operation Stop
DTC
C2112/12 Transmitter ID2 Operation Stop
DTC
C2113/13 Transmitter ID3 Operation Stop
DTC
C2114/14 Transmitter ID4 Operation Stop
DTC
C2115/15 Transmitter ID5 Operation Stop
CIRCUIT DESCRIPTION
The tire pressure monitor valve sub–assy stops transmitting signals when receiving specific signals. The
ECU stores the DTCs when the tire pressure monitor valve sub–assy receives the signals, for some reason,
and stops transmitting signals. As this is not a system malfunction, the DTCs are erased when signal trans-
mission is resumed.
HINT:
The electric wave is stopped at assembly plant, because the strength of the electric wave emitting from the
tire pressure sensing transmitter does not comply with the Japan Wireless Telegraphy Act.
DTC No.
DTC Detecting Condition
Trouble Area
C2111/11
C2112/12
C2113/13
C2114/14
C2115/15
When any signal similar to the stop signal is received for
some reason, these DTCs will be output.
Tire pressure monitor valve sub–assy
Tire pressure monitor receiver assy
Tire pressure monitor ECU
HINT:
It is necessary to perform the procedure to identify the tire pressure monitor valve sub–assy that is malfunc-
tioning because it cannot be identified by the output DTC.
DI–828
–
DIAGNOSTICS
TIRE PRESSURE WARNING SYSTEM
1022
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
HINT:
Set the tire pressure to the specified value.
1
Forcibly transmit transmitter ID of all wheels.
PREPARATION:
Remove the valve cores of the all wheels to rapidly reduce the pressure of all tires to 120 kPa (1.2 kgf/cm
2
,
17 psi respectively).
HINT:
The transmitter ID can be transmitted forcibly by rapidly reducing tire air pressure.
NEXT
2
Check DTC (See page
CHECK:
Check for a DTC.
OK:
DTC is not output.
OK
Set tire pressure to normal value (Transmitter
stop condition is completely reset).
NG
3
Set tire pressure to normal value.
PREPARATION:
Set the tire pressure back to the specified normal value.
Tire size
Front
Rear
Spare
P245 / 70 R 16
220 kPa (2.2 kgf/cm
2
, 32 psi)
240 kPa (2.4 kgf/cm
2
, 35 psi)
240 kPa (2.4 kgf/cm
2
, 35 psi)
P265 / 70 R 16
220 kPa (2.2 kgf/cm
2
, 32 psi)
220 kPa (2.2 kgf/cm
2
, 32 psi)
220 kPa (2.2 kgf/cm
2
, 32 psi)
P265 / 65 R 17
220 kPa (2.2 kgf/cm
2
, 32 psi)
220 kPa (2.2 kgf/cm
2
, 32 psi)
220 kPa (2.2 kgf/cm
2
, 32 psi)
NEXT
–
DIAGNOSTICS
TIRE PRESSURE WARNING SYSTEM
DI–829
1023
4
Forcibly transmit transmitter ID.
PREPARATION:
(a)
Forcibly transmit the transmitter ID by performing the following:
(1)
Set the tire pressure to the specified value.
(2)
Rotate the tire 90 to 270 degrees.
(3)
Rapidly reduce the pressure of all tires to 120 kPa (1.2 kgf/cm
2
, 17 psi respectively).
(4)
Perform the steps mentioned above to all tires including the spare tire.
NEXT
5
Check DTC (See page
CHECK:
Check for a DTC.
OK:
DTC is not output.
HINT:
A system error is probable if NG. If any DTC other than C2111/21, C2112/22, C2113/23, C2114/24 and
C2115/25, is output, perform troubleshooting according to that DTC.
OK
Set tire pressure to normal value (Transmitter
stop condition is completely reset).
NG
6
Check DTC (See page
CHECK:
Check if DTCs C2111/21, C2112/22, C2113/23, C2114/24 and C2115/25 are all output.
No
Go to step 12.
Yes
F19136
Tire Pressure Monitor ECU:
T17
RF5V
GND2
RDA
F19137
Tire Pressure Monitor Receiver Assy:
T19
+5V
GND
RDA
F19138
Tire Pressure Monitor ECU:
T17
RF5V
GND2
DI–830
–
DIAGNOSTICS
TIRE PRESSURE WARNING SYSTEM
1024
7
Check harness and connector (Tire pressure monitor receiver assy – Tire pres-
sure monitor ECU).
PREPARATION:
Disconnect the tire pressure monitor receiver assy T19 connec-
tor and tire pressure monitor ECU T17 connector.
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:
T17–7 (RDA) – T19–1 (RDA)
Below 1
Ω
T17–8 (RF5V) – T19–5 (+5V)
Below 1
Ω
T17–16 (GND2) – T19–4 (GND)
Below 1
Ω
T17–7 (RDA) – Body ground
10 k
Ω
or higher
T17–8 (RF5V) – Body ground
10 k
Ω
or higher
T17–16 (GND2) – Body ground
10 k
Ω
or higher
NG
Repair or replace harness or connector.
OK
8
Inspect tire pressure monitor ECU.
PREPARATION:
(a)
Connect the tire pressure monitor ECU T17 connector.
(b)
Turn the ignition switch to the ON position.
CHECK:
Measure the voltage according to the value(s) in the table be-
low.
OK:
Tester Connection
Condition
Specified Condition
T17–8 (RF5V) –
T17–16 (GND2)
Ignition Switch ON
4.5 to 5.5 V
NG
Check power source circuit
(See page
).
OK
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