Toyota Sequoia (2005). Manual - part 330

F19749

CAN J/C ”A” Side (w/ Earth Terminal)
Wire Harness View:

J56

G

W

Earth Terminal

–

DIAGNOSTICS

CAN COMMUNICATION SYSTEM

DI–1115

1309

INSPECTION PROCEDURE

1

Check for an open in one side of the CAN sub bus line (Suspension control ECU
sub bus line).

HINT:
For vehicles without an enhanced air suspension system, go to
step 3.
PREPARATION:
(a)

Turn the ignition switch LOCK position.

(b)

Disconnect the suspension control ECU sub bus line con-
nector (J56) from the CAN J/C.

NOTICE:

Check the colors of the wire harnesses before dis-
connecting the connector.

Before disconnecting the connector, make a note of
where it is connected.

Reconnect the connector to its original position.

(c)

Connect the hand–held tester to the DLC3 via CAN VIM.

(d)

Turn the ignition switch ON.

CHECK:
Select ”BUS CHECK” on the hand–held tester display via the
CAN VIM (see page 

DI–1073

).

RESULT:

A

”REAR AIRSUS” does not appear

B

2 or more ECUs and/or sensors do not appear

A

Go to step 4.

B

2

Connect the connector.

(a)

Turn the ignition switch LOCK position.

(b)

Reconnect the suspension control ECU sub bus line connector (J56) to the CAN J/C.

NEXT

DI–1116

–

DIAGNOSTICS

CAN COMMUNICATION SYSTEM

1310

3

Replace translate ECU.

PREPARATION:
(a)

Replace the translate ECU.

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

Turn the ignition switch ON.

CHECK:
Select ”BUS CHECK” on the hand–held teter display via the CAN (see page 

DI–1073

).

OK:

All ECUs connected to the CAN communication system are displayed.

NG

Replace ECM (See page 

SF–80

).

OK

End.

4

Connect the connector.

(a)

Turn the ignition switch LOCK position.

(b)

Reconnect the suspension control ECU sub bus line connector (J56) to CAN S/C.

NEXT

F16805

Suspension Control ECU
Wire Harness View:

CANH

CANL

S25

–

DIAGNOSTICS

CAN COMMUNICATION SYSTEM

DI–1117

1311

5

Check for an open in one side of the CAN sub bus line (Suspension control ECU
sub bus line).

PREPARATION:
Disconnect the connector (S25) from the suspension control
ECU.
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:

Tester connection

Condition

Specified value

S25–29 (CANH) – 

S25–28 (CANL)

Ignition Switch OFF

54 to 69 

Ω

NG

Repair or replace suspension control ECU sub
bus line or connector (CAN–H, CAN–L).

OK

Replace suspension control ECU
(See page 

SA–171

).

DICY7–02

DI–1118

–

DIAGNOSTICS

SUPPLEMENTAL RESTRAINT SYSTEM

1312

SUPPLEMENTAL RESTRAINT SYSTEM

PRECAUTION

NOTICE:
When disconnecting the battery terminal, initialize the following system after the terminal is recon-
nected.

System Name

See Page

Back Door Power Window Control System

BE–77

1.

HANDLING PRECAUTIONS FOR AIRBAG SENSOR

HINT:
In this section, the airbag sensor assembly, front airbag sensor LH, front airbag sensor RH, side airbag sen-
sor assembly LH, side airbag sensor assembly RH, curtain shield airbag sensor assembly LH, curtain shield
airbag sensor assembly RH and seat position airbag sensor assembly are collectively referred to as the air-
bag sensor.
(a)

Before starting the following operations, wait at least 90 seconds after disconnecting the negative (–)
terminal of the battery:
(1)

Replacement of the airbag sensor.

(2)

Adjustment of the front/rear doors of the vehicle equipped with the side airbag and curtain shield
airbag (fitting adjustment).

(b)

When connecting or disconnecting the airbag sensor connector, ensure that all of the sensors are
installed in the vehicle.

(c)

Do not use an airbag sensor which has been dropped during the operation or transportation.

(d)

Do not disassemble the airbag sensor.

2.

INSPECTION PROCEDURE FOR VEHICLE INVOLVED IN ACCIDENT

(a)

When the airbag has not deployed, confirm the DTC by checking the SRS warning light. If there is any
malfunction in the SRS airbag system, perform troubleshooting.

(b)

When any of the airbags have deployed, replace the airbag sensor and check the installation condition.

(c)

Perform the zero point calibration and sensitivity check under the condition is listed below (see page

DI–1128

).

The occupant classification ECU is replaced.

Accessories (seatback tray, seat cover, etc.) are installed.

The passenger seat removed from the vehicle.

The passenger airbag ON/OFF indicator (”OFF”) comes on when the passenger seat is not occu-
pied.

The vehicle is brought to the workshop for repair due to an accident or a collision.

NOTICE:
When an accident vehicle is brought into the workshop for repair, check the flatness of the body side
that is installed on the passenger seat. If the flatness is not within 

±

 3.0 mm (0.118 in.), repair it to

the specified range (within 

±

 3.0 mm (0.118 in.)).