Toyota Sequoia (2005). Manual - part 323

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F19737

DLC3:

D6

CANH

CANL

–

DIAGNOSTICS

CAN COMMUNICATION SYSTEM

DI–1087

1281

INSPECTION PROCEDURE

1

Check DLC3.

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

Tester connection

Condition

Specified value

Result

D6–6 (CANH) – 

D6–14 (CANL)

Ignition switch OFF

108 to 132 

Ω

A

D6–6 (CANH) – 

D6–14 (CANL)

Ignition switch OFF

132 

Ω

 or higher

B

NOTICE:
When the measured value is 132 

Ω

 or more and a CAN com-

munication system diagnostic code is output, there may be
a fault other than a disconnection in the DLC3 sub bus line.
For that reason, troubleshooting should be performed
again from ”How to proceed with troubleshooting” after re-
pairing the trouble area.

B

Repair or replace DLC3 sub bus line or connec-
tor (CAN–H, CAN–L).

A

F19749

Junction Connector ”A” Side
(w/ Earth Terminal)
Wire Harness View:

Earth Terminal

CANL

L

J53

W

CANH

DI–1088

–

DIAGNOSTICS

CAN COMMUNICATION SYSTEM

1282

2

Check CAN main bus line for disconnection (ECM – Junction connector).

PREPARATION:
Disconnect the ECM main bus line connector (J53) from the
junction connector.
NOTICE:

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

Reconnect the connector to its original position.

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

Tester connection

Condition

Specified value

J53–1 (CANH) – 

J53–2 (CANL)

Ignition switch OFF

108 to 132 

Ω

NG

Go to step 5.

OK

3

Connect the connector.

Reconnect the ECM main line connector (J53) to the junction connector.

NEXT

F19749

J55

R

W

Junction Connector ”A” Side
(w/ Earth Terminal)
Wire Harness View:

CANL

CANH

Earth Terminal

–

DIAGNOSTICS

CAN COMMUNICATION SYSTEM

DI–1089

1283

4

Check CAN main bus line for disconnection (Translate ECU – Junction connec-
tor).

PREPARATION:
Disconnect the translate ECU main bus line connector (J55)
from the junction connector.
NOTICE:

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

Reconnect the connector to its original position.

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

Tester connection

Condition

Specified value

J55–1 (CANH) – 

J55–2 (CANL)

Ignition Switch OFF

108 to 132 

Ω

NG

Go to step 7.

OK

Replace junction connector.

5

Connect the connector.

Reconnect the ECM main bus line connector (J53) to the junction connector.

NEXT

B17418

ECM:

E5

CANL

CANH

DI–1090

–

DIAGNOSTICS

CAN COMMUNICATION SYSTEM

1284

6

Inspect ECM.

PREPARATION:
Disconnect the ECM connector (E5).
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:

Tester connection

Condition

Specified value

33 (CANH) – 34 (CANL)

Ignition Switch OFF

108 to 132 

Ω

NG

Replace ECM (See page 

SF–80

).

OK

Repair or replace CAN main bus line or con-
nector (ECM – junction connector).

7

Connect the connector.

Reconnect the translate ECU main bus line connector (J55) to the junction connector.

NEXT