Infiniti FX35, FX50 (S51). Manual — part 1291
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< DTC/CIRCUIT DIAGNOSIS >
[CAN GATEWAY]
POWER SUPPLY AND GROUND CIRCUIT
POWER SUPPLY AND GROUND CIRCUIT
Diagnosis Procedure
INFOID:0000000005241951
1.
CHECK FUSE
Check that the following fuse are not blown.
*: VK engine models
Is the fuse fusing?
YES
>> Replace the blown fuse after repairing the affected circuit if a fuse is blown.
NO
>> GO TO 2.
2.
CHECK POWER SUPPLY CIRCUIT
Check voltage between CAN gateway harness connector and ground.
*: VK engine models
Is the measurement value normal?
YES
>> GO TO 3.
NO
>> Repair harness or connector.
3.
CHECK GROUND CIRCUIT
Check continuity between CAN gateway harness connector and ground.
Does continuity exist?
YES
>> INSPECTION END
NO
>> Repair harness or connector.
Signal name
Fuse No.
Battery power supply
11
Ignition power supply
3
*
Terminals
Condition
Voltage
(Approx.)
(+)
(
−
)
CAN gateway
Ground
Ignition
switch
Connector
Terminal
M125
3
OFF
Battery
voltage
9
*
ON
Battery
voltage
CAN gateway
Ground
Continuity
Connector
Terminal
M125
5
Existed
11
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CAN GATEWAY
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< ECU DIAGNOSIS INFORMATION >
[CAN GATEWAY]
C
D
E
F
G
H
I
J
K
L
B
A
O
P
N
ECU DIAGNOSIS INFORMATION
CAN GATEWAY
Reference Value
INFOID:0000000005241952
TERMINAL LAYOUT
PHYSICAL VALUES
JSGIA0023ZZ
Terminal No.
(Wire color)
Description
Condition
Value
(Approx.)
Signal name
Input/
Output
+
–
1
(L)
—
CAN-H
Input/
Output
—
—
3
(GR)
Ground
Battery power supply
Input
Ignition switch OFF
Battery voltage
4
(L)
—
CAN-H
Input/
Output
—
—
5
(B)
Ground
Ground
—
Ignition switch ON
0 V
6
(L)
—
CAN-H
Input/
Output
—
—
7
(P)
—
CAN-L
Input/
Output
—
—
9
(LG)
Ground
Ignition power supply
(VK engine models)
Input
Ignition switch
OFF or ACC
0 V
ON
Battery voltage
10
(P)
—
CAN-L
Input/
Output
—
—
11
(B)
Ground
Ground
—
Ignition switch ON
0 V
12
(P)
—
CAN-L
Input/
Output
—
—
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< ECU DIAGNOSIS INFORMATION >
[CAN GATEWAY]
CAN GATEWAY
Wiring Diagram - CAN GATEWAY SYSTEM -
INFOID:0000000005241953
JCMWA4982GB
LAN
CAN GATEWAY
LAN-109
< ECU DIAGNOSIS INFORMATION >
[CAN GATEWAY]
C
D
E
F
G
H
I
J
K
L
B
A
O
P
N
DTC Inspection Priority Chart
INFOID:0000000005241954
If some DTCs are displayed at the same time, perform inspections one by one based on the following priority
chart.
JCMWA4983GB
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