Infiniti M45 (Y34). Manual — part 618
CAN SYSTEM (TYPE 1)
LAN-39
[CAN]
C
D
E
F
G
H
I
J
L
M
A
B
LAN
12.
CHECK HARNESS FOR SHORT CIRCUIT
1.
Disconnect TCM connector.
2.
Check continuity between TCM harness connector F103 termi-
nals 6 (L) and 7 (R).
OK or NG
OK
>> GO TO 13.
NG
>> Repair harness between TCM and harness connector
F105.
13.
CHECK HARNESS FOR SHORT CIRCUIT
Check continuity between TCM harness connector F103 terminals 6
(L), 7 (R) and ground.
OK or NG
OK
>> GO TO 14.
NG
>> Repair harness between TCM and harness connector
F105.
14.
ECM/COMBINATION METER INTERNAL CIRCUIT INSPECTION
Check components inspection. Refer to
LAN-39, "ECM/COMBINATION METER INTERNAL CIRCUIT
OK or NG
OK
>> Connect all the connectors and diagnose again. Refer to
NG
>> Replace ECM and/or combination meter.
Component Inspection
AKS003X5
ECM/COMBINATION METER INTERNAL CIRCUIT INSPECTION
●
Remove ECM and combination meter from vehicle.
●
Check resistance between ECM terminals 174 and 171.
●
Check resistance between combination meter terminals 34 and
35.
6 (L) – 7 (R)
: Continuity should not exist.
PKIA0283E
6 (L) – ground
: Continuity should not exist.
7 (R) – ground
: Continuity should not exist.
PKIA0284E
Unit
Terminal
Resistance value (
Ω
)
(Approx.)
ECM
174 – 171
108 - 132
Combination meter
34 – 35
PKIA0830E
LAN-40
[CAN]
CAN SYSTEM (TYPE 2)
CAN SYSTEM (TYPE 2)
PFP:23710
System Description
AKS003Y9
CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Many elec-
tronic control units are equipped onto a vehicle, and each control unit shares information and links with other
control units during operation (not independent). In CAN communication, control units are connected with 2
communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring.
Each control unit transmits/receives data but selectively reads required data only.
Component Parts and Harness Connector Location
AKS003YA
SKIA3778E
CAN SYSTEM (TYPE 2)
LAN-41
[CAN]
C
D
E
F
G
H
I
J
L
M
A
B
LAN
Wiring Diagram — CAN —
AKS003YB
TKWA0642E
LAN-42
[CAN]
CAN SYSTEM (TYPE 2)
TKWA0643E
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