Toyota Sequoia (2005). Manual - part 273

–

DIAGNOSTICS

TIRE PRESSURE WARNING SYSTEM

DI–887

1081

11

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

2

, 17 psi).

NEXT

12

Using hand–held tester, check the ID1 tire pressure data.

NEXT

13

Is ID1 tire pressure 120 kPa (1.2 kgf/cm

2

, 17 psi)?

Yes

The ID1 is for the rear left wheel transmitter.

No

The ID1 is for the spare tire transmitter.

F19795

A20
Airbag Sensor 
Assembly

Sub J/B No.4

Tire Pressure 
Monitor ECU

T5 Translate ECU

D6
DLC3

TC

E4

P–B

P–B

TC

P–B

13

TC

TC

P–B

G

T17

4D

5

1A

9

4A

5

4C

5

4E

5

ECM

23

4B

5

CG

4

J43
J/C

O

15

1F

O

15

A

IG

A

12

TC

Instrument Panel J/B

P–B

DI–888

–

DIAGNOSTICS

TIRE PRESSURE WARNING SYSTEM

1082

Tc and CG Terminal Circuit

CIRCUIT DESCRIPTION

DTC output mode is set by connecting terminals TC and CG of the DLC3.
The DTCs are indicated by blinking of the tire pressure warning lamp.

WIRING DIAGRAM

HINT:
When each warning lamp stays blinking, a ground short in the wiring of terminal TC of the DLC3 or an internal
ground short in each ECU is suspected.

DIDKK–01

D13491

TC

D6

DLC3:

F19136

T17

TC

Tire Pressure Monitor ECU:

D13491

CG

D6

DLC3:

–

DIAGNOSTICS

TIRE PRESSURE WARNING SYSTEM

DI–889

1083

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

Check harness and connector (DLC3 – Tire pressure monitor ECU).

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

Condition

Specified condition

D6–13 (TC) –

T17–12 (TC)

Always

Below 1 

Ω

NG

Repair or replace harness or connector.

OK

2

Check harness and connector (DLC3 – Body ground).

CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:

Tester connection

Condition

Specified condition

D6–4 (CG) –
Body ground

Always

Below 1 

Ω

NG

Repair or replace harness or connector.

OK

F19136

T17

TC

Tire Pressure Monitor ECU:

DI–890

–

DIAGNOSTICS

TIRE PRESSURE WARNING SYSTEM

1084

3

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

Condition

Specified condition

T17–12 (TC) –

Body ground

Always

10 k

Ω

 or higher

NG

Repair or replace harness or connector and
each ECU.

OK

Replace tire pressure monitor ECU
(See page 

SA–20

).