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 

DI–805

).

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 

DI–820

).

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 

DI–820

).

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 

DI–820

).

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 

DI–878

).

OK