Infiniti FX35, FX50 (S51). Manual — part 1615
U1010 CONTROL UNIT (CAN)
SCS-45
< DTC/CIRCUIT DIAGNOSIS >
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U1010 CONTROL UNIT (CAN)
Description
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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 detectability. Many elec-
tronic 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 communication with less wir-
ing. Each control unit communicates data but selectively reads required data only.
DTC Logic
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DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
DTC REPRODUCTION PROCEDURE
With CONSULT-III
1.
Turn the ignition switch OFF to ON.
2.
Perform “E-SUS” self-diagnosis.
Is DTC “U1010” detected?
YES
>> Proceed to diagnosis procedure. Refer to
.
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000005588966
1.
CHECK E-SUS CONTROL UNIT
Check E-SUS control unit harness connector for disconnection and deformation.
Is the inspection result normal?
YES
>> Replace E-SUS control unit. Refer to
NO
>> Repair or replace error-detected parts.
DTC
Display item
Malfunction detected condition
Possible cause
U1010
CONTROL UNIT (CAN)
Detecting error during the initial diagno-
sis of CAN controller of E-SUS control
unit.
Malfunction of E-SUS control unit
SCS-46
< DTC/CIRCUIT DIAGNOSIS >
MODE SELECT SWITCH (E-SUS MODE SELECT)
MODE SELECT SWITCH (E-SUS MODE SELECT)
Description
INFOID:0000000005588967
• Mode select switch (E-SUS mode select) can be switched to SPORT mode or AUTO mode manually.
• When the ignition switch is turned to ON, the mode lamp briefly illuminates, but it is not a malfunction.
Component Function Check
INFOID:0000000005588968
1.
CHECK MODE SELECT SWITCH (E-SUS MODE SELECT) OPERATION
Operate the mode select switch (E-SUS mode select) and check that the sport mode indicator lamp in the
combination meter turns ON/OFF correctly.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Proceed to diagnosis procedure. Refer to
.
Diagnosis Procedure
INFOID:0000000005588969
1.
CHECK MODE SELECT SWITCH (E-SUS MODE SELECT)
Check mode select switch (E-SUS mode select). Refer to
SCS-47, "Component Inspection"
.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Mode select switch (E-SUS mode select) is malfunctioning. Replace Mode select switch (E-SUS
mode select).
2.
CHECK MODE SELECT SWITCH (E-SUS MODE SELECT) HARNESS
1.
Disconnect E-SUS control unit harness connector.
2.
Disconnect mode select switch (E-SUS mode select) connector.
3.
Check the continuity between mode select switch (E-SUS mode select) harness connector and E-SUS
control unit harness connector.
4.
Check the continuity between mode select switch (E-SUS mode select) harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> If the open or short in harness, repair or replace harness.
3.
CHECK COMBINATION METER
Selection mode
Target driving scene
AUTO mode
Normal driving (basic position)
SPORT mode
Sport-conscious driving
Condition
Sport mode indicator lamp illumination status
Mode select switch (E-SUS mode select): SPORT
ON
Mode select switch (E-SUS mode select): AUTO
OFF
E-SUS control unit
Mode select switch (E-SUS
mode select)
Continuity
Connector
Terminal
Connector
Terminal
B38
20
M179
1
Existed
Mode select switch (E-SUS mode select)
—
Continuity
Connector
Terminal
M179
3
Ground
Existed
MODE SELECT SWITCH (E-SUS MODE SELECT)
SCS-47
< DTC/CIRCUIT DIAGNOSIS >
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1.
Connect E-SUS control unit harness connector.
2.
Connect mode select switch (E-SUS mode select) harness connector.
3.
Check the indication and operation of combination meter are normal. Refer to
.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Repair or replace combination meter.
Component Inspection
INFOID:0000000005588970
1.
CHECK MODE SELECT SWITCH (E-SUS MODE SELECT)
1.
Turn the ignition switch OFF.
2.
Disconnect mode select switch (E-SUS mode select) harness connector.
3.
Check the continuity between mode select switch (E-SUS mode select) connector terminals.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace mode select switch (E-SUS mode select).
Mode select switch (E-SUS mode select)
Condition
Continuity
Terminal
1
−
3
When mode select switch (E-SUS mode
select): SPORT
Existed
When mode select switch (E-SUS mode
select): AUTO
Not existed
SCS-48
< DTC/CIRCUIT DIAGNOSIS >
SPORT MODE INDICATOR LAMP
SPORT MODE INDICATOR LAMP
Description
INFOID:0000000005588971
The following is the indications of indicator lamp after the engine start.
SPORT MODE INDICATOR LAMP
Component Function Check
INFOID:0000000005588972
1.
SPORT MODE INDICATOR LAMP OPERATION CHECK
Check that the sport mode indicator lamp in the combination meter turns ON/OFF correctly when operating
the mode select switch (E-SUS mode select).
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Proceed to diagnosis procedure. Refer to
.
Diagnosis Procedure
INFOID:0000000005588973
1.
CHECK MODE SELECT SWITCH (E-SUS MODE SELECT)
Perform the trouble diagnosis for mode select switch (E-SUS mode select). Refer to
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Check mode select switch (E-SUS mode select). Refer to
SCS-47, "Component Inspection"
.
2.
CHECK SELF-DIAGNOSIS
With CONSULT-III
Perform “E-SUS” self-diagnosis.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Check items displayed by self-diagnosis.
3.
CHECK COMBINATION METER
Check the indication and operation of combination meter are normal. Refer to
.
Is the inspection result normal?
YES
>> Replace E-SUS control unit. Refer to
NO
>> Repair or replace combination meter. Refer to
.
Condition
Sport mode indicator lamp
AUTO mode
OFF
SPORT mode
ON
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