Toyota Sequoia (2005). Manual - part 324

F19822

Translate ECU:

ENG–

ENG+

–

DIAGNOSTICS

CAN COMMUNICATION SYSTEM

DI–1091

1285

8

Inspect translate ECU.

PREPARATION:
Disconnect the translate ECU connector (T5).
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:

Tester connection

Condition

Specified value

14 (ENG+) – 16 (ENG–)

Ignition Switch OFF

108 to 132 

Ω

NG

Replace translate ECU.

OK

Repair or replace CAN main bus line or con-
nector (Translate ECU – Junction connector).

F19702

ECM

CANH

CANL

ENG+

ENG–

CANH

CANL

CANH

CANL

D6 DLC3

Translate ECU

Suspension Control ECU

33

E5

34

E5

L

W

1

J53

2

J53

Junction Connector

1

J54

2

J54

B

W

6

14

14
T5

16
T5

1

J55

2

J55

R

W

29

S25

28

S25

G

W

(*1)

(*1)

1

J56

2

J56

*1: w/ Air Suspension System

DI–1092

–

DIAGNOSTICS

CAN COMMUNICATION SYSTEM

1286

Check CAN Bus Lines For Short Circuit

CIRCUIT DESCRIPTION

There may be a short circuit between the CAN bus lines when the resistance between terminals 6 (CANH)
and 14 (CANL) of the DLC3 is below 54 

Ω

.

Symptom

Trouble Area

Resistance between terminals 6 (CANH) and 14 (CANL) of
the DLC3 is below 54 

Ω

.

Short between CAN bus lines

Translate ECU

Suspension control ECU

ECM

Junction connector

WIRING DIAGRAM

DIDID–01

F19749

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

J54

W

B

Earth Terminal

1

2

3

4

5

6

7

8

9 10 11 12 13 14 15 16

F19737

DLC3:

D6

CANH

CANL

–

DIAGNOSTICS

CAN COMMUNICATION SYSTEM

DI–1093

1287

INSPECTION PROCEDURE

1

Check CAN bus lines for short circuit (DLC3 sub bus line).

PREPARATION:
Disconnect the DLC3 sub bus line connector (J54) 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

D6–6 (CANH) – 

D6–14 (CANL)

Ignition Switch OFF

1 M

Ω

 or more

NG

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

OK

2

Connect the connector.

Reconnect the DLC3 sub bus line connector (J54) to the junction connector.

NEXT

F19749

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

J53

W

L

Earth Terminal

1

2

3

4

5

6

7

8

9 10 11 12 13 14 15 16

F19737

DLC3:

D6

CANH

CANL

DI–1094

–

DIAGNOSTICS

CAN COMMUNICATION SYSTEM

1288

3

Check CAN bus lines for short circuit (ECM main bus line).

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

D6–6 (CANH) – 

D6–14 (CANL)

Ignition Switch OFF

108 to 132 

Ω

OK

Go to step 8.

NG

4

Connect the connector.

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

NEXT