Page 1297 of 4323
F19749
Junction Connector ºAº Side
(w/ Earth Terminal)
Wire Harness View:
J55
W R
Earth Terminal
12345678
9 10111213141516
F19737
DLC3:
D6CANH
CANL
± DIAGNOSTICSCAN COMMUNICATION SYSTEM
DI±1095
1289 Author: Date:
2005 SEQUOIA (RM1146U)
5 Check CAN bus lines for short circuit (Translate ECU main bus line).
PREPARATION:
Disconnect the translate ECU main bus line connector (J55)
from the junction connector.
NOTICE:
Before disconnecting the connector, make 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 connectionConditionSpecified value
D6±6 (CANH) ±
D6±14 (CANL)Ignition Switch OFF108 to 132 W
OK Go to step 10.
NG
6 Connect the connector.
Reconnect the translate ECU main bus line connector (J55) to the junction connector.
NEXT
Page 1298 of 4323
F19749
Junction Connector ºAº Side
(w/ Earth Terminal)
Wire Harness View:
J56
W G
Earth Terminal
12345678
9 10111213141516
F19737
DLC3:
D6CANH
CANL
DI±1096
± DIAGNOSTICSCAN COMMUNICATION SYSTEM
1290 Author: Date:
2005 SEQUOIA (RM1146U)
7 Check CAN bus lines for short circuit (Suspension control ECU sub bus line).
HINT:
For vehicles without an enhanced air suspension system, go to
NG.
PREPARATION:
Disconnect the suspension control ECU sub bus line connector
(J56) 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 connectionConditionSpecified value
D6±6 (CANH) ±
D6±14 (CANL)Ignition Switch OFF54 to 69 W
OK Go to step 12.
NG
Replace junction connector.
8 Connect the connector.
Reconnect the ECM main bus line connector (J53) to the junction connector.
NEXT
Page 1299 of 4323
12345678
9 10111213141516
F19737
DLC3:
D6CANH
CANL
± DIAGNOSTICSCAN COMMUNICATION SYSTEM
DI±1097
1291 Author: Date:
2005 SEQUOIA (RM1146U)
9 Check CAN bus lines for short circuit (ECM main bus line).
PREPARATION:
Disconnect the ECM connector (E5).
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:
Tester connectionConditionSpecified value
D6±6 (CANH) ±
D6±14 (CANL)Ignition Switch OFF108 to 132 W
OK Replace ECM (See page SF±80).
NG
Repair or replace ECM main bus line or con-
nector (CAN±H, CAN±L).
10 Connect the connector.
Reconnect the translate ECU main bus line connector (J55) to the junction connector.
NEXT
Page 1300 of 4323
12345678
9 10111213141516
F19737
DLC3:
D6CANH
CANL
DI±1098
± DIAGNOSTICSCAN COMMUNICATION SYSTEM
1292 Author: Date:
2005 SEQUOIA (RM1146U)
11 Check CAN bus lines for short circuit (Translate ECU main bus line).
PREPARATION:
Disconnect the translate ECU connector (T5).
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:
Tester connectionConditionSpecified value
D6±6 (CANH) ±
D6±14 (CANL)Ignition Switch OFF108 to 132 W
OK Replace translate ECU.
NG
Repair or replace translate ECU main bus line
or connector (CAN±H, CAN±L).
12 Connect the connector.
Reconnect the suspension control ECU sub bus line connector (J56) to the junction connector.
NEXT
Page 1301 of 4323
12345678
9 10111213141516
F19737
DLC3:
D6CANH
CANL
± DIAGNOSTICSCAN COMMUNICATION SYSTEM
DI±1099
1293 Author: Date:
2005 SEQUOIA (RM1146U)
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 connectionConditionSpecified value
D6±6 (CANH) ±
D6±14 (CANL)Ignition Switch OFF54 to 69 W
OK Replace suspension control ECU
(See page SA±171).
NG
Repair or replace suspension control ECU
sub bus line or connector (CAN±H, CAN±L).
Page 1302 of 4323
F19703
Translate ECU
ENG+
ENG±
GND14
T5
16
T5
40
T5WR
O1
J55
2
J55Junction Connector
1
J53
2
J53WL
W±B33
E5
34
E5
7
E8ECM
CANH
CANL
E01
Suspension
Control ECU
1
J56
2
J56WG
W±B29
S25
28
22CANH
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
AJ43
J/C
IG CANH
CANL
CG
*1: w/ Air Suspension System DI±1100
± DIAGNOSTICSCAN COMMUNICATION SYSTEM
1294 Author: Date:
2005 SEQUOIA (RM1146U)
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.
SymptomTrouble 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
Page 1303 of 4323
F19749
Junction Connector ºAº Side
(w/ Earth Terminal)
Wire Harness View:
J54
W B
Earth Terminal
12345678
9 10111213141516
F19737
DLC3:
D6CANH
CANLCG
± DIAGNOSTICSCAN COMMUNICATION SYSTEM
DI±1101
1295 Author: Date:
2005 SEQUOIA (RM1146U)
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 connectionConditionSpecified value
D6±4 (CG) ±
D6±6 (CANH)Ignition Switch OFF1 MW or higher
D6±4 (CG) ±
D6±14 (CANL)Ignition Switch OFF1 MW 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
Page 1304 of 4323
F19749
Junction Connector ºAº Side
(w/ Earth Terminal)
Wire Harness View:
J53
W L
Earth Terminal
12345678
9 10111213141516
F19737
DLC3:
D6CANH
CANLCG
DI±1102
± DIAGNOSTICSCAN COMMUNICATION SYSTEM
1296 Author: Date:
2005 SEQUOIA (RM1146U)
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 connectionConditionSpecified value
D6±4 (CG) ±
D6±6 (CANH)Ignition Switch OFF3 kW or higher
D6±4 (CG) ±
D6±14 (CANL)Ignition Switch OFF3 kW 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