Infiniti I35 (A33). Manual — part 462
Signals
ECM
Steering angle sen-
sor
VDC/TCS/ABS con-
trol unit
TCM
Accelerator pedal position signal
T
R
R
Steering angle sensor signal
T
R
GI
MA
EM
LC
EC
FE
AT
AX
SU
BR
ST
RS
BT
HA
SC
IDX
CAN COMMUNICATION
System Description (Cont’d)
EL-449
Component Parts and Harness Connector
Location
NHEL0323
SEL434YA
System Description
NHEL0324
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
electronic 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 wir-
ing. Each control unit transmits/receives data but selectively reads required data only.
CAN SYSTEM (FOR TCS MODELS)
Component Parts and Harness Connector Location
EL-450
Wiring Diagram — CAN —
NHEL0325
MEL368O
GI
MA
EM
LC
EC
FE
AT
AX
SU
BR
ST
RS
BT
HA
SC
IDX
CAN SYSTEM (FOR TCS MODELS)
Wiring Diagram — CAN —
EL-451
Trouble Diagnoses
NHEL0326
WORK FLOW
NHEL0326S01
1. Print all the data of “SELF-DIAG RESULTS” for “ENGINE”, “ABS” and “A/T” displayed on CONSULT-II.
PKIA8260E
2. Print all the data of “CAN DIAG SUPPORT MNTR” for “ENGINE”, “ABS” and “A/T” displayed on CONSULT-
II.
PKIA8343E
3. Attach the printed sheet of “SELF-DIAG RESULTS” and “CAN DIAG SUPPORT MNTR” onto the check
sheet. Refer to “CHECK SHEET” (EL-453).
4. Based on the “CAN DIAG SUPPORT MNTR” results, put “v” marks onto the items with “UNKWN” or “NG”
in the check sheet table. Refer to “CHECK SHEET” (EL-453).
NOTE:
If “NG” is displayed on “INITIAL DIAG (Initial diagnosis)” as “CAN DIAG SUPPORT MNTR” for the
diagnosed control unit, replace the control unit.
5. According to the check sheet results (example), start inspection. Refer to “CHECK SHEET RESULTS
(EXAMPLE)” (EL-454).
CAN SYSTEM (FOR TCS MODELS)
Trouble Diagnoses
EL-452
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