Toyota Sequoia (2005). Manual — part 326
![](/vehicles/linovind/vere/fry/qupalesaro.png)
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–1099
1293
13
Check CAN bus lines for short circuit (Suspension control ECU sub bus line).
PREPARATION:
Disconnect the suspension control ECU connector (S25).
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
54 to 69
Ω
OK
Replace suspension control ECU
(See page
NG
Repair or replace suspension control ECU
sub bus line or connector (CAN–H, CAN–L).
![](/vehicles/linovind/vere/fry/malam.png)
F19703
Translate ECU
ENG+
ENG–
GND
14
T5
16
T5
40
T5
W
R
O
1
J55
2
J55
Junction Connector
1
J53
2
J53
W
L
W–B
33
E5
34
E5
7
E8
ECM
CANH
CANL
E01
Suspension
Control ECU
1
J56
2
J56
W
G
W–B
29
S25
28
22
CANH
CANL
GND
S25
S25
W–B
(*1)
(*1)
A
J12
J/C
IF
EB
D6
DLC3
1
J54
2
J54
B
W
O
O
O
6
14
4
A
A
A
J43
J/C
IG
CANH
CANL
CG
*1: w/ Air Suspension System
DI–1100
–
DIAGNOSTICS
CAN COMMUNICATION SYSTEM
1294
Check CAN Bus Line For Short To GND
CIRCUIT DESCRIPTION
A short to GND is suspected in the CAN bus line when there is continuity between terminals 4 (CG) and 6
(CANH) or terminals 4 (CG) and 14 (CANL) of the DLC3.
Symptom
Trouble Area
There is continuity between terminals 4 (CG) and 6 (CANH)
or terminals 4 (CG) and 14 (CANL) of the DLC3.
Short to GND in CAN bus line
ECM
Translate ECU
Suspension control ECU
WIRING DIAGRAM
DIDIE–01
![](/vehicles/linovind/vere/fry/ngl.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
CG
–
DIAGNOSTICS
CAN COMMUNICATION SYSTEM
DI–1101
1295
INSPECTION PROCEDURE
1
Check CAN bus line for short to GND (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
D6–4 (CG) –
D6–6 (CANH)
Ignition Switch OFF
1 M
Ω
or higher
D6–4 (CG) –
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/storin.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
CG
DI–1102
–
DIAGNOSTICS
CAN COMMUNICATION SYSTEM
1296
3
Check CAN bus line for short to GND (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
D6–4 (CG) –
D6–6 (CANH)
Ignition Switch OFF
3 k
Ω
or higher
D6–4 (CG) –
D6–14 (CANL)
Ignition Switch OFF
3 k
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
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