Toyota Sequoia (2005). Manual - part 423

–

DIAGNOSTICS

SUPPLEMENTAL RESTRAINT SYSTEM

DI–1487

1681

3

Perform zero point calibration.

(a)

Connect the hand–held tester to the DLC3.

(b)

Turn the ignition switch to the ON position.

(c)

Using the hand–held tester, perform ”Zero point calibration” (see page 

DI–1128

).

OK:

The ”COMPLETED” is displayed on the tester screen.

NG

Go to step 5.

OK

4

Perform sensitivity check.

Using the hand–held tester, perform ”Sensitivity check” (see page 

DI–1128

).

OK:

Standard value: 27 to 33 kg (59.52 to 72.75 lb)

NG

Go to step 5.

OK

END

DI–1488

–

DIAGNOSTICS

SUPPLEMENTAL RESTRAINT SYSTEM

1682

5

Retighten front seat assembly RH bolt (see page 

BO–111

, 

BO–125

).

(a)

Turn the ignition switch to the LOCK position.

(b)

Loosen the 4 installation bolts of the front seat assembly RH.

(c)

Tighten the 4 installation bolts of the front seat assembly RH to the specified torque.
Torque: 37 N·m (380 kgf·cm, 27 ft·lbf)

NEXT

6

Perform zero point calibration.

(a)

Connect the hand–held tester to the DLC3.

(b)

Turn the ignition switch to the ON position.

(c)

Using the hand–held tester, perform ”Zero point calibration” (see page 

DI–1128

).

OK:

The ”COMPLETED” is displayed on the tester screen.

NG

Go to step 8.

OK

7

Perform sensitivity check.

Using the hand–held tester, perform ”Sensitivity check” (see page 

DI–1128

).

OK:

Standard value: 27 to 33 kg (59.52 to 72.75 lb)

NG

Go to step 8.

OK

END

–

DIAGNOSTICS

SUPPLEMENTAL RESTRAINT SYSTEM

DI–1489

1683

8

Check connectors.

PREPARATION:
(a)

Turn the ignition switch to the LOCK position.

(b)

Disconnect the negative (–) terminal cable from the battery, and wait for at least 90 seconds.

CHECK:
Check the connectors are properly connected to the occupant classification ECU and the 4 occupant classifi-
cation sensors.
OK:

The connectors are connected.

PREPARATION:
Disconnect the connectors from the occupant classification ECU and the 4 occupant classification sensors.
CHECK:
Check the connectors are not damaged or deformed.
OK:

The connectors are normal.

NG

Repair or replace connector, then go to step 1.

OK

9

Check DTC.

PREPARATION:
(a)

Connect the connectors to the occupant classification ECU and the 4 occupant classification sensors.

(b)

Connect the negative (–) terminal cable to the battery.

CHECK:
(a)

Turn the ignition switch to the ON position, and wait for at least 60 seconds.

(b)

Clear the DTCs stored in memory (see page 

DI–1147

).

(c)

Turn the ignition switch to the LOCK position.

(d)

Turn the ignition switch to the ON position, and wait for at least 60 seconds.

(e)

Check the DTCs (see page 

DI–1147

).

OK:

DTC is not output.

NG

Replace airbag sensor assembly
(see page 

RS–82

).

OK

DI–1490

–

DIAGNOSTICS

SUPPLEMENTAL RESTRAINT SYSTEM

1684

10

Replace occupant classification ECU.

(a)

Turn the ignition switch to the LOCK position.

(b)

Disconnect the negative (–) terminal cable from the battery, and wait for at least 90 seconds.

(c)

Replace the occupant classification ECU (see page 

RS–111

).

HINT:
Perform the inspection using parts from a normal vehicle if possible.

NEXT

11

Perform zero point calibration.

(a)

Connect the negative (–) terminal cable to the battery.

(b)

Connect the hand–held tester to the DLC3.

(c)

Turn the ignition switch to the ON position.

(d)

Using the hand–held tester, perform ”Zero point calibration” (see page 

DI–1128

).

OK:

The ”COMPLETED” is displayed on the tester screen.

NEXT

12

Perform sensitivity check.

Using the hand–held tester, perform ”Sensitivity check” (see page 

DI–1128

).

OK:

Standard value: 27 to 33 kg (59.52 to 72.75 lb)

NEXT

END