Toyota Sequoia (2005). Manual - part 266

–

DIAGNOSTICS

TIRE PRESSURE WARNING SYSTEM

DI–859

1053

6

Check DTC (See page 

DI–820

).

CHECK:
(a)

Check for a DTC.

OK:

DTC is not output.

HINT:

It is necessary to register an ID when replacing the tire pressure monitor ECU.

Read ID on the DATA LIST before removing the tire pressure monitor ECU.

 

Register the ID to the new

tire pressure monitor ECU (see page 

DI–805

).

NG

Replace tire pressure monitor ECU
(See page 

SA–20

).

OK

End

DI–860

–

DIAGNOSTICS

TIRE PRESSURE WARNING SYSTEM

1054

DTC

C2177/77 Initialization Incomplete

CIRCUIT DESCRIPTION

Initialization is necessary after replacing either ECU, tires with different tire pressure or tire pressure monitor
valve sub–assy, after rotating the tires, or when a new vehicle is delivered.

DTC No.

DTC Detection Condition

Trouble Area

C2177/77

Initialization is not complete after vehicle speed of 5mph

(8km/h)  or more continues for 20 minutes or more (total).

Tire pressure monitor valve sub–assy

Tire pressure monitor ECU

Tire pressure monitor receiver assy

Wire harness

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

Check tire pressure warning lamp.

PREPARATION:
Turn the ignition switch to the ON position.
CHECK:
Check the tire pressure warning lamp.
RESULT:

Does not blink

A

Comes on and goes off repeatedly at 0.5 second intervals

B

B

Go to step 7.

A

2

Clear DTC (See page 

DI–820

).

NEXT

DIDKD–01

–

DIAGNOSTICS

TIRE PRESSURE WARNING SYSTEM

DI–861

1055

3

Check DTC (See page 

DI–820

).

CHECK:
Check for a DTC.
OK:

DTC C2177/77 is not output.

NG

Go to step 4.

OK

Perform initialization (See page 

DI–808

).

4

Check tire pressure warning lamp.

PREPARATION:
Turn the ignition switch to the ON position.
CHECK:
Check the tire pressure warning lamp comes on for 3 seconds and goes off.
RESULT:

Does not come on

A

Comes on

B

B

Go to step 2.

A

F19136

Tire Pressure Monitor ECU:

T17

IND

F19755

C5–20

C5

Combination 
Meter

F19138

Tire Pressure Monitor ECU:

T17

IND

GND2

DI–862

–

DIAGNOSTICS

TIRE PRESSURE WARNING SYSTEM

1056

5

Check harness and connector (T

ire pressure monitor ECU – Combination meter).

PREPARATION:
Disconnect the tire pressure monitor ECU T17 connector and
C5 combination meter connector.
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:

Tester Connection

Specified Condition

T17–6 (IND) – C5–20

Below 1 

Ω

T17–6 (IND) – Body ground

10 k

Ω

 or higher

NG

Repair or replace harness and connector.

OK

6

Inspect tire pressure monitor ECU.

PREPARATION:
Connect the tire pressure monitor ECU T17 connector.
CHECK:
Measure the voltage according to the value(s) in the table be-
low.
OK:

Tester connection

Condition

Specified condition

T17–6 (IND) – 

T17–16 (GND2)

Immediately after turning

the ignition switch ON

(within 3 seconds)

8 to 16V

NG

Replace tire pressure monitor ECU
(See page 

SA–20

).

OK

Repair or replace combination meter
(See Page 

DI–1610

).