Toyota Sequoia (2005). Manual - part 271

F13970

ECU–IG

Instrument
Panel J/B:

–

DIAGNOSTICS

TIRE PRESSURE WARNING SYSTEM

DI–879

1073

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

).

1

Inspect battery.

CHECK:
Check the battery voltage.
OK:

Voltage: 11 to 14 V

NG

Check and repair charging system. 
(See page 

CH–1

)

OK

2

Inspect fuse (ECU–IG).

PREPARATION:
Remove the ECU–IG fuse from the instrument panel J/B.
CHECK:
Check continuity of the ECU–IG fuse.
OK:

Continuity

NG

Check for a short in all harness and connector
connected to fuse and replace fuse.

OK

F19136

Tire Pressure Monitor ECU:

IG

T17

F19136

Tire Pressure Monitor ECU:

T17

GND

DI–880

–

DIAGNOSTICS

TIRE PRESSURE WARNING SYSTEM

1074

3

Inspect tire pressure monitor ECU (IG terminal voltage).

PREPARATION:
(a)

Disconnect 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

T17–2 (IG) – Body ground

Ignition Switch ON

10 to 14 V

NG

Repair or replace harness or connector 
(IG circuit).

OK

4

Check harness and connector (Tire pressure monitor ECU – Body ground).

PREPARATION:
Disconnect the tire pressure monitor ECU T17 connector.
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:

Tester Connection

Specified Condition

T17–11 (GND) – Body ground

Below 1 

Ω

NG

Repair or replace harness or connector 
(GND circuit).

OK

Replace tire pressure monitor ECU 
(See page 

SA–20

).

–

DIAGNOSTICS

TIRE PRESSURE WARNING SYSTEM

DI–881

1075

Identify transmitter (Error in present)

HINT:

Refer to IDENTIFY TRANSMITTER (ERROR IN PRESENT) if the DTC is output currently. Refer to
IDENTIFY TRANSMITTER (ERROR IN PAST) if a previously output DTC is not output now. Even when
DTCs C2165/65 to C2169/69 are output both as present and past codes, refer to IDENTIFY TRANS-
MITTER (ERROR IN PAST).

DTCs relevant to the transmitters are corresponding to each transmitter ID. It is impossible to identify
which tire is malfunctioning according to each transmitter ID. Therefore the following procedures must
be followed to confirm the ID No. and tire location.

INSPECTION PROCEDURE

1

Set the pressure of all tires to the specified 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

2

Rapidly reduce the pressure of front right wheel to 120 kPa (1.2 kgf/cm

2

, 17 psi).

NEXT

DIDKI–01

DI–882

–

DIAGNOSTICS

TIRE PRESSURE WARNING SYSTEM

1076

3

Using hand–held tester, check the tire pressure data of each wheel.

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:

Item

Measurement item/

Range (Display)

Normal Condition

Diagnostic Note

TIREPRESS1

ID1 tire inflation pressure/
min.: 0 kPa (0 kgf

⋅

cm

2

, 0 psi),

max.: 637.5 kPa (6.48 kgf

⋅

cm

2

,

92.2 psi)

Actual tire inflation pressure

–

TIREPRESS2

ID2 tire inflation pressure/
min.: 0 kPa (0 kgf

⋅

cm

2

, 0 psi),

max.: 637.5 kPa (6.48 kgf

⋅

cm

2

,

92.2 psi)

Actual tire inflation pressure

–

TIREPRESS3

ID3 tire inflation pressure/
min.: 0 kPa (0 kgf

⋅

cm

2

, 0 psi),

max.: 637.5 kPa (6.48 kgf

⋅

cm

2

,

92.2 psi)

Actual tire inflation pressure

–

TIREPRESS4

ID4 tire inflation pressure/
min.: 0 kPa (0 kgf

⋅

cm

2

, 0 psi),

max.: 637.5 kPa (6.48 kgf

⋅

cm

2

,

92.2 psi)

Actual tire inflation pressure

–

TIREPRESS5

ID5 tire inflation pressure/
min.: 0 kPa (0 kgf

⋅

cm

2

, 0 psi),

max.: 637.5 kPa (6.48 kgf

⋅

cm

2

,

92.2 psi)

Actual tire inflation pressure

–

CHECK:
Check the tire pressure data of each tire.

NEXT

4

Is any of the tire pressure data 120 kPa (1.2 kgf/cm

2

, 17 psi)?

No

The detected DTC is for the front right wheel
transmitter.

Yes

5

Rapidly reduce the pressure of front left wheel to 120 kPa (1.2 kgf/cm

2

, 17 psi).

NEXT