2004 INFINITI FX35 control

CAN SYSTEM (TYPE 4)
LAN-133
[CAN]
C
D
E
F
G
H
I
J
L
MA
B
LAN
Revision: 2004 November 2004 FX35/FX45
CAN SYSTEM (TYPE 4)PFP:23710
System DescriptionAKS00C11
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 LocationAKS00C12
SKIA7123E

LAN-138
[CAN]
CAN SYSTEM (TYPE 4)
Revision: 2004 November 2004 FX35/FX45
Work FlowAKS00C15
1. When there are no indications of “BCM”, “METER A/C AMP” or “IPDM E/R” on “SELECT SYSTEM” dis-
play of CONSULT-II, print the “SELECT SYSTEM”.
2. Print all the data of “SELF-DIAG RESULTS” for “ENGINE”, “A/T”, “ALL MODE AWD/4WD”, “BCM”,
“METER A/C AMP”, “ABS”, and “IPDM E/R” displayed on CONSULT-II.
3. Print all the data of “CAN DIAG SUPPORT MNTR” for “ENGINE”, “A/T”, “ALL MODE AWD/4WD”, “BCM”,
“METER A/C AMP”, “ABS”, and “IPDM E/R” displayed on CONSULT-II.
4. Attach the printed sheet of “SELECT SYSTEM”, “SELF-DIAG RESULTS” and “CAN DIAG SUPPORT
MNTR” onto the check sheet. Refer to LAN-140, "
CHECK SHEET" .
5. Based on the indications of “SELECT SYSTEM” and the results of “CAN DIAG SUPPORT MNTR”, put
marks “v” onto the items with “No indication”, “NG”, or “UNKWN” in the check sheet table. Refer to LAN-
140, "CHECK SHEET" .
NOTE:

If “NG” is displayed on “INITIAL DIAG (Initial diagnosis)” as “CAN DIAG SUPPORT MNTR” for the diag-
nosed control unit, replace the control unit.

The “CAN DIAG SUPPORT MNTR” items, which are not in check sheet table, are not related to diag-
nostic procedure on service manual.
So it is not necessary to check the status of “CAN DIAG SUPPORT MNTR” items which are not indi-
cated in check sheet table.
6. Check CAN communication line of the integrated display system. Refer to AV- 8 5 , "
CAN Communication
Line Inspection" .
7. Attach the CAN DIAG MONITOR check sheet onto the check sheet. Refer to LAN-140, "
CHECK SHEET"
.
PKIA2093E
PKIA8260E
PKIA8343E

CAN SYSTEM (TYPE 4)
LAN-139
[CAN]
C
D
E
F
G
H
I
J
L
MA
B
LAN
Revision: 2004 November 2004 FX35/FX45
8. Mark the “NG” or “UNKWN” item of the check sheet table with “v” from the result of CAN DIAG MONITOR
check sheet. Refer to LAN-140, "
CHECK SHEET" .
NOTE:
If “NG” is displayed on “CAN COMM” as “CAN DIAG MNTR” for the diagnosed control unit, replace the
control unit. Refer to AV- 8 5 , "
CAN Communication Line Inspection" .
9. According to the check sheet results (example), start inspection. Refer to LAN-142, "
CHECK SHEET
RESULTS (EXAMPLE)" .

LAN-140
[CAN]
CAN SYSTEM (TYPE 4)
Revision: 2004 November 2004 FX35/FX45
CHECK SHEET
NOTE:
If “NG” is displayed on “INITIAL DIAG (Initial diagnosis)” or “CAN COMM” for the diagnosed control unit,
replace the control unit.
PKIA7985E

LAN-142
[CAN]
CAN SYSTEM (TYPE 4)
Revision: 2004 November 2004 FX35/FX45
CHECK SHEET RESULTS (EXAMPLE)
NOTE:
If “NG” is displayed on “INITIAL DIAG (Initial diagnosis)” or “CAN COMM” for the diagnosed control unit,
replace the control unit.
Case 1
Check harness between TCM and data link connector. Refer to LAN-156, "Circuit Check Between TCM and
Data Link Connector" .
PKIA7987E
SKIA6602E

LAN-144
[CAN]
CAN SYSTEM (TYPE 4)
Revision: 2004 November 2004 FX35/FX45
Case 3
Check harness between unified meter and A/C amp. and ABS actuator and electric unit (control unit). Refer to
LAN-157, "
Circuit Check Between Unified Meter and A/C Amp. and ABS Actuator and Electric Unit (Control
Unit)" .
PKIA7989E
SKIA6604E

LAN-148
[CAN]
CAN SYSTEM (TYPE 4)
Revision: 2004 November 2004 FX35/FX45
Case 7
Check AWD control unit circuit. Refer to LAN-159, "AWD Control Unit Circuit Check" .
PKIA7993E
SKIA6608E

CAN SYSTEM (TYPE 4)
LAN-153
[CAN]
C
D
E
F
G
H
I
J
L
MA
B
LAN
Revision: 2004 November 2004 FX35/FX45
Case 12
Check ABS actuator and electric unit (control unit) circuit. Refer to LAN-161, "ABS Actuator and Electric Unit
(Control Unit) Circuit Check" .
PKIA7998E
SKIA6613E