Nissan Pathfinder. Manual — part 1159
U0300 CAN COMMUNICATION DATA
TM-95
< DTC/CIRCUIT DIAGNOSIS >
[CVT: RE0F10E]
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U0300 CAN COMMUNICATION DATA
DTC Logic
INFOID:0000000009177550
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:0000000009177551
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-96
< DTC/CIRCUIT DIAGNOSIS >
[CVT: RE0F10E]
U1000 CAN COMM CIRCUIT
U1000 CAN COMM CIRCUIT
Description
INFOID:0000000009177552
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:0000000009177553
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:0000000009177554
For the diagnosis procedure, refer to
LAN-20, "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)
U1117 LOST COMMUNICATION (ABS)
TM-97
< DTC/CIRCUIT DIAGNOSIS >
[CVT: RE0F10E]
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U1117 LOST COMMUNICATION (ABS)
DTC Logic
INFOID:0000000009177555
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 5 seconds or more.
2. Check the DTC.
Is “U1117” detected?
YES
>> Go to
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000009177556
For the diagnosis procedure, refer to
LAN-20, "Trouble Diagnosis Flow Chart"
DTC
CONSULT screen terms
(Trouble diagnosis content)
DTC detection condition
Possible causes
U1117
LOST COMM (ABS)
(Lost Communication With
ABS)
When the ignition switch is ON, TCM is unable
to receive the CAN communications signal
from ABS actuator and electric unit (control
unit) continuously for 2 seconds or more.
• ABS actuator and electric unit (control
unit)
• Harness or connector
(CAN communication line is open or
shorted)
TM-98
< DTC/CIRCUIT DIAGNOSIS >
[CVT: RE0F10E]
P062F EEPROM
P062F EEPROM
Description
INFOID:0000000009177557
TCM compares the calculated value stored in the flash ROM with the value stored in TCM. If the calculated
value does not agree with the stored value, TCM judges this as a malfunction.
DTC Logic
INFOID:0000000009177558
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
1. Start the engine.
2. Check the DTC.
Is “P062F” detected?
YES
>> Go to
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000009177559
1.
CHECK INTERMITTENT INCIDNT
GI-49, "Intermittent Incident"
Is the inspection result normal?
YES
TM-195, "Removal and Installation"
.
NO
>> Repair or replace malfunctioning parts.
DTC
CONSULT screen terms
(Trouble diagnosis content)
DTC detection condition
Possible causes
P062F
EEPROM
(Internal Control Module EE-
PROM Error)
Flash ROM error is detected when turning ON
the ignition switch.
• TCM (Flash ROM)
• Harness or connector
[TCM power supply (back-up) circuit is
open or shorted]
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