Nissan Cube. Manual - part 962
TM-104
< DTC/CIRCUIT DIAGNOSIS >
[CVT: RE0F08B]
U1000 CAN COMM CIRCUIT
U1000 CAN COMM CIRCUIT
Description
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Real time communication is performed between each control unit such as TCM, ECM, combination meter, or
others. Information is shared and linked between other control units. Each system is optimally controlled
according to driving conditions of the vehicle.
In CAN (Controller Area Network) communication, 2 control units are connected via 2 communication lines
(CAN-H and CAN-L) allowing a high rate of information transmission via less wiring. Each control unit trans-
mits/receives data but selectively reads required data only.
DTC Logic
INFOID:0000000009948947
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PRECONDITIONING
Immediately after performing any “DTC CONFIRMATION PROCEDURE”, always turn ignition switch OFF.
Then wait at least 10 seconds before performing the next test.
>> GO TO 2.
2.
PERFORM DTC CONFIRMATION PROCEDURE
With CONSULT
1.
Start the engine.
2.
Maintain idling state for 2 seconds or more.
3.
Select “Self Diagnostic Results” in “TRANSMISSION”.
With GST
Follow the procedure “With CONSULT”.
Is “U1000” detected?
YES
>> Go to
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000009948948
Go to
LAN-22, "CAN System Specification Chart"
.
DTC
Trouble diagnosis name
DTC is detected if...
Possible cause
U1000
CAN communication line
TCM cannot transmit and receive CAN
communication signals continuously for 2
seconds or more
• CAN communication line
• Each control unit