Toyota Sequoia (2005). Manual — part 328
![](/vehicles/linovind/vere/fry/mec.png)
F19704
Translate ECU
ENG+
ENG–
14
T5
16
T5
R
W
1
J55
2
J55
1
J53
2
J53
Junction Connector
L
W
33
E5
34
E5
3
E4
ECM
CANH
CANL
BATT
B–Y
11
IA4
D6 DLC3
6
14
CANH
CANL
BAT
B
W
1
J54
2
J54
1
J56
2
J56
Suspension Control ECU
G
W
(*1)
(*1)
29
S25
28
S25
25
S25
CANH
CANL
BAT
V
B
J37
C
J38
V
V
5
IA5
B–Y
V
V
Engine Room J/B & R/B No.2
EF1 No.1
AIR SUS No.2
7
2H
2
2
1
2D
B
W
W
W
B
W
4 9
8
AIR
SUS
ALT
5 B
F10
FL
Block
Battery
1
1L
13
1F
1
2
OBD
Instrument Panel J/B
W–R
16
*1: w/ Air Suspension System
1
2
J/C
–
DIAGNOSTICS
CAN COMMUNICATION SYSTEM
DI–1107
1301
Check CAN Bus Line For Short To + B
CIRCUIT DESCRIPTION
A short to +B is suspected in the CAN bus line when there is continuity between terminals 16 (BAT) and 6
(CANH) or terminals 16 (BAT) and 14 (CANL) of the DLC3.
Symptom
Trouble Area
There is continuity between terminals 16 (BAT) and 6
(CANH) or 16 (BAT) and 14 (CANL) of the DLC3.
Short to +B in CAN bus line
ECM
Translate ECU
Suspension control ECU
WIRING DIAGRAM
DIDIF–01
![](/vehicles/linovind/vere/fry/dog.png)
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
BAT
DI–1108
–
DIAGNOSTICS
CAN COMMUNICATION SYSTEM
1302
INSPECTION PROCEDURE
1
Check CAN bus line for short to +B (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
D6–16 (BAT) –
D6–6 (CANH)
Ignition Switch OFF
1 M
Ω
or higher
D6–16 (BAT) –
D6–14 (CANL)
Ignition Switch OFF
1 M
Ω
or higher
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
![](/vehicles/linovind/vere/fry/seves.png)
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
BAT
–
DIAGNOSTICS
CAN COMMUNICATION SYSTEM
DI–1109
1303
3
Check CAN bus line for short to +B (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
D6–16 (BAT) –
D6–6 (CANH)
Ignition Switch OFF
1 M
Ω
or higher
D6–16 (BAT) –
D6–14 (CANL)
Ignition Switch OFF
1 M
Ω
or higher
OK
Go to step 8.
NG
4
Connect the connector.
Reconnect the ECM main bus line connector (J53) to the junction connector.
NEXT
![](/vehicles/linovind/vere/fry/suin.png)
F19749
Junction Connector ”A” Side
(w/ Earth Terminal)
Wire Harness View:
J55
W
R
Earth Terminal
1
2
3
4
5
6
7
8
9 10 11 12 13 14 15 16
F19737
DLC3:
D6
CANH
CANL
BAT
DI–1110
–
DIAGNOSTICS
CAN COMMUNICATION SYSTEM
1304
5
Check CAN bus line for short to +B (Translate ECU main bus line).
HINT:
For vehicles without an enhanced air suspension system, go to
step 11.
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
D6–16 (BAT) –
D6–6 (CANH)
Ignition Switch OFF
1 M
Ω
or higher
D6–16 (BAT) –
D6–14 (CANL)
Ignition Switch OFF
1 M
Ω
or higher
OK
Go to step 10.
NG
6
Connect the connector.
Reconnect the translate ECU main bus line connector (J55) to the junction connector.
NEXT
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