Toyota Sequoia (2005). Manual - part 254

D05981

DLC3

Hand–Held
Tester

–

DIAGNOSTICS

TIRE PRESSURE WARNING SYSTEM

DI–811

1005

2.

PERFORM SIGNAL CHECK

HINT:

When entering signal check, the tire pressure monitor
ECU sets all the signal check DTCs first.
After completing signal check for each inspection item,
the DTCs that are determined normal by the tire pressure
monitor ECU will be erased.
The DTCs for other inspection items may not be erased
when only a certain signal is inspected.

When signal check returns back to normal mode, all the
signal check DTCs will be erased.

(a)

Make sure that the ignition switch is off.

(b)

Connect the hand–held tester to DLC3.

(c)

Turn the ignition switch to the ON position.

(d)

Select the SIGNAL CHECK on hand–held tester.

F19181

DI–812

–

DIAGNOSTICS

TIRE PRESSURE WARNING SYSTEM

1006

(e)

Drive the vehicle at 12mph (20 km/h) or more for 10 se-
conds or more.

(f)

Loosen the valve core and rapidly reducing the pressure
(20 kPa above/15 sec.).

HINT:
The transmitter ID can be transmitted by rapidly reducing the
tire air pressure.
(g)

Check that the tire pressure warning system test mode
DTCs are erased.

SIGNAL

CHECK DTC

Test Signal

Signal Check DTC Clear Condition

C2181 C2185

Transmitter Data

Receive DATA from the transmitter which has a registered ID

in TPWS ECU

C2191

Vehicle Speed Signal

Vehicle speed of 12 mph (20 km/h) or more is detected for 3

seconds or more

(h)

Result

HINT:
After the signal check is complete, check for a DTC and signal check DTC to confirm the system status.

SIGNAL CHECK DTC is output

Repair the faulty part and enter SIGNAL CHECK again

SIGNAL CHECK DTCs are cleared

No problem

(i)

End of SIGNAL CHECK

After completing test mode (SIGNAL CHECK), turn the ignition switch OFF and disconnect the tester.

–

DIAGNOSTICS

TIRE PRESSURE WARNING SYSTEM

DI–813

1007

DTC of SIGNAL CHECK (TEST DIAGNOSIS) function:
If a malfunction code is displayed during the test mode DTC check, check the circuit listed for that code. For
details of each code, refer to the ”See Page” under respective ”DTC No.” in the chart.

DTC No.

(See Page)

Detection Item

Trouble Area

C2181/81

(

DI–834

)

Transmitter ID1 not received

Tire pressure monitor receiver assy

Each tire pressure monitor valve sub–assy

Tire pressure monitor ECU

Wire harness

C2182/82

(

DI–834

)

Transmitter ID2 not received

Tire pressure monitor receiver assy

Each tire pressure monitor valve sub–assy

Tire pressure monitor ECU

Wire harness

C2183/83

(

DI–834

)

Transmitter ID3 not received

Tire pressure monitor receiver assy

Each tire pressure monitor valve sub–assy

Tire pressure monitor ECU

Wire harness

C2184/84

(

DI–834

)

Transmitter ID4 not received

Tire pressure monitor receiver assy

Each tire pressure monitor valve sub–assy

Tire pressure monitor ECU

Wire harness

C2185/85

(

DI–834

)

Transmitter ID5 not received

Tire pressure monitor receiver assy

Each tire pressure monitor valve sub–assy

Tire pressure monitor ECU

Wire harness

C2191/91

(

DI–870

)

Vehicle speed signal error

Vehicle speed sensor

Combination meter assy

Tire pressure monitor ECU

Wire harness

DIDK1–01

DI–814

–

DIAGNOSTICS

TIRE PRESSURE WARNING SYSTEM

1008

PROBLEM SYMPTOMS TABLE

If a normal code is displayed during DTC check but the problem still occurs, check the circuits for each prob-
lem symptom in the order given in the table below and proceed to the relevant troubleshooting page.

Symptom

Suspected Area

See page

Tire pressure warning system does not operate.

1. Tire pressure monitor valve sub–assy

2. Tire pressure monitor receiver assy

3. Power source circuit

4. Tc terminal circuit

5. Combination meter assy

6. Tire pressure monitor ECU

–

–

DI–878

DI–888

BE–55

–

DTC check cannot be done.

1. Power source circuit

2. Tc terminal circuit

3. Tire pressure monitor ECU

DI–878

DI–888

–

Tire pressure warning lamp malfunctions (Does not light up).

1. Power source circuit

2. Tire pressure warning lamp circuit

3. Combination meter assy

4. Tire pressure monitor ECU

DI–878

DI–873

BE–55

–

Tire pressure warning lamp malfunctions (Remains ON).

1. Tire pressure check

2. Tire pressure monitor ECU connector poorly connected

3. Tire pressure warning lamp circuit

4. Combination meter assy

5. Tire pressure monitor ECU

SA–3

–

DI–873

BE–55

–

Tire pressure warning lamp malfunctions (Blinking).

1. Check DTC

2. Tc terminal circuit

3. Test mode (SIGNAL CHECK)

4. Tire pressure monitor ECU

DI–820

DI–888

DI–810

–

Initialization cannot be done.

1. Test mode (SIGNAL CHECK)

2. Tire pressure warning reset switch

3. Tire pressure monitor ECU

DI–810

DI–875

–