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
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