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
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
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