Nissan Qashqai J11. Manual — part 735
U0300 CAN COMMUNICATION DATA
TM-515
< DTC/CIRCUIT DIAGNOSIS >
[CVT: RE0F10G]
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U0300 CAN COMMUNICATION DATA
DTC Logic
INFOID:0000000010245589
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PREPARATION BEFORE WORK
If another “DTC CONFIRMATION PROCEDURE” occurs just before, turn ignition switch OFF and wait for at
least 10 seconds, then perform the next test.
>> GO TO 2.
2.
CHECK DTC DETECTION
With CONSULT
1.
Start the engine and wait for 5 seconds or more.
2.
Check the DTC.
Is “U0300” detected?
YES
>> Go to
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000010245590
1.
CONTROL UNIT CHECK
Check the number of control units replaced before “U0300” is detected.
Is one control unit replaced?
YES
>> The specification of the control unit replaced may be incorrect. Check the part number and the
specification.
NO
>> GO TO 2.
2.
CONTROL UNIT CHECK
With CONSULT
1.
Remove one of the control unit replaced.
2.
Assemble the old control unit before replacement.
3.
Turn ignition switch ON, and wait for 2 seconds or more.
4.
Select “Self Diagnostic Results” in “TRANSMISSION”.
Is “U0300”detected?
YES
>> Turn OFF the ignition switch and check other control units in the same manner.
NO
>> The specification of the control unit removed may be incorrect. Check the part number and the
specification.
DTC
CONSULT screen terms
(Trouble diagnosis content)
DTC detection condition
Possible causes
U0300
CAN COMM DATA
(Internal Control Module Soft-
ware Incompatibility)
When the ignition switch is ON, the data length
transmitted from each control unit is shorter
than the specified length and the status contin-
ues for 2 seconds or more.
Control unit other than TCM
TM-516
< DTC/CIRCUIT DIAGNOSIS >
[CVT: RE0F10G]
U1000 CAN COMM CIRCUIT
U1000 CAN COMM CIRCUIT
Description
INFOID:0000000010245591
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 independently). 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.
DTC Logic
INFOID:0000000010245592
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PREPARATION BEFORE WORK
If another “DTC CONFIRMATION PROCEDURE” occurs just before, turn ignition switch OFF and wait for at
least 10 seconds, then perform the next test.
>> GO TO 2.
2.
CHECK DTC DETECTION
With CONSULT
1.
Start the engine and wait for at least 5 seconds.
2.
Check the DTC.
Is “U1000” detected?
YES
>> Go to
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000010245593
For the diagnosis procedure, refer to
LAN-24, "Trouble Diagnosis Flow Chart"
DTC
CONSULT screen terms
(Trouble diagnosis content)
DTC detection condition
Possible causes
U1000
CAN COMM CIRCUIT
(CAN Communication Line)
When the ignition switch is ON, TCM cannot
send the CAN communication signal continu-
ously for 2 seconds or more.
Harness or connector
(CAN communication line is open or
shorted)
U110F LOST COMMUNICATION (ECM)
TM-517
< DTC/CIRCUIT DIAGNOSIS >
[CVT: RE0F10G]
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U110F LOST COMMUNICATION (ECM)
DTC Logic
INFOID:0000000010438743
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PREPARATION BEFORE WORK
If another “DTC CONFIRMATION PROCEDURE” occurs just before, turn ignition switch OFF and wait for at
least 10 seconds, then perform the next test.
>> GO TO 2.
2.
PERFORM DTC CONFIRMATION PROCEDURE
With CONSULT
1.
Start the engine and wait for at least 5 seconds.
2.
Check the DTC.
Is “U110F” detected?
YES
>> Go to
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000010438744
For the diagnosis procedure, refer to
LAN-24, "Trouble Diagnosis Flow Chart"
DTC
CONSULT screen terms
(Trouble diagnosis content)
DTC detection condition
Possible cause
U110F
LOST COMM (ECM)
(Lost Communication With
ECM)
When the ignition switch is ON, TCM is un-
able to receive the CAN communications sig-
nal from ECM continuously for 2 seconds or
more.
• ECM
• Harness or connector (CAN communi-
cation line is open or shorted)
TM-518
< DTC/CIRCUIT DIAGNOSIS >
[CVT: RE0F10G]
U1111 LOST COMMUNICATION (CHASSIS CONTROL MODULE)
U1111 LOST COMMUNICATION (CHASSIS CONTROL MODULE)
DTC Logic
INFOID:0000000010438745
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PREPARATION BEFORE WORK
If another “DTC CONFIRMATION PROCEDURE” occurs just before, turn ignition switch OFF and wait for at
least 10 seconds, then perform the next test.
>> GO TO 2.
2.
PERFORM DTC CONFIRMATION PROCEDURE
With CONSULT
1.
Start the engine and wait for at least 5 seconds.
2.
Check the DTC.
Is “U1111” detected?
YES
>> Go to
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000010438746
For the diagnosis procedure, refer to
LAN-24, "Trouble Diagnosis Flow Chart"
DTC
CONSULT screen terms
(Trouble diagnosis content)
DTC detection condition
Possible cause
U1111
LOST COMM (CHASSIS CONT
MDUL)
(Lost Communication With
Chassis Control Module)
When the ignition switch is ON, TCM is un-
able to receive the CAN communications
signal from chassis control module contin-
uously for 2 seconds or more.
• Chassis control module
• Harness or connector (CAN communi-
cation line is open or shorted)
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