DTC U1000 CAN COMMUNICATION LINE
AT-471
[RE5F22A]
D
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AT
Revision: November 2006
2006 Altima
DTC U1000 CAN COMMUNICATION LINE
PFP:23710
Description
ECS009DB
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 malfunction 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 con-
nected 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.
On Board Diagnosis Logic
ECS009DC
●
This is an OBD-II self-diagnostic item.
●
Diagnostic trouble code “CAN COMM CIRCUIT” with CONSULT-II or U1000 without CONSULT-II is
detected when TCM cannot communicate to other control units.
Possible Cause
ECS009DD
Harness or connectors
(CAN communication line is open or shorted.)
DTC Confirmation Procedure
ECS009DE
NOTE:
If “DTC Confirmation Procedure” has been previously performed, always turn ignition switch “OFF”
and wait at least 10 seconds before performing the next test.
After the repair, perform the following procedure to confirm the malfunction is eliminated.
WITH CONSULT-II
1.
Turn ignition switch “ON”. (Do not start engine.)
2.
Select “A/T” with “DATA MONITOR” mode in CONSULT-II.
3.
Start engine.
4.
Drive vehicle and maintain the following condition for at least 6
seconds.
SLCT LVR POSI: “D” position
5.
If DTC is detected, go to
AT-473, "Diagnostic Procedure"
.
WITH GST
Follow the procedure “WITH CONSULT-II”.
BCIA0030E
