Toyota Sequoia (2005). Manual — part 329
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–1111
1305
7
Check CAN bus line for short to +B (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
D6–16 (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
Replace suspension control ECU
(See page
NG
Repair or replace suspension control ECU
sub bus line or connector (CAN–H, CAN–L).
8
Connect the connector.
Reconnect the ECM main bus line connector (J53) to the junction connector.
NEXT
1
2
3
4
5
6
7
8
9 10 11 12 13 14 15 16
F19737
DLC3:
D6
CANH
CANL
BAT
DI–1112
–
DIAGNOSTICS
CAN COMMUNICATION SYSTEM
1306
9
Check CAN bus line for short to +B (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 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
Replace ECM (See page
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
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–1113
1307
11
Check CAN bus line for short to +B (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 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
Replace translate ECU.
NG
Repair or replace translate ECU main bus line
or connector (CAN–H, CAN–L).
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–1114
–
DIAGNOSTICS
CAN COMMUNICATION SYSTEM
1308
Check for an Open in one Side of the CAN Sub Bus Line
CIRCUIT DESCRIPTION
If 2 or more ECUs and/or sensors do not appear on the hand–held tester’s ”BUS CHECK” screen via the
CAN VIM, one side of the CAN sub–bus line may be open. (One side of the CAN–H [sub–bus line] /CAN–L
[sub–bus line] of the ECU and/or sensor is open.)
Symptom
Trouble Area
2 or more ECUs and/or sensors do not appear on the hand–
held tester’s ”BUS CHECK” screen via the CAN VIM.
One side of the CAN sub–bus line is open
Suspension control ECU
ECM
Translate ECU
CAN J/C
WIRING DIAGRAM
DIDIG–01
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