Nissan Qashqai (2007-2010). Manual — part 613
U1010 CONTROL UNIT (CAN)
DLN-25
< COMPONENT DIAGNOSIS >
[TRANSFER: TY30A]
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U1010 CONTROL UNIT (CAN)
Description
INFOID:0000000001088468
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 detection ability. 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 transmission with less wiring.
Each control unit transmits/receives data but selectively reads required data only. Refer to
DTC Logic
INFOID:0000000000972097
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
DTC REPRODUCTION PROCEDURE
With CONSULT-III
1.
Turn the ignition switch OFF to ON.
2.
Perform 4WD control unit self-diagnosis.
Is DTC “U1010” detected?
YES
>> Proceed to diagnosis procedure. Refer to
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000000972098
1.
CHECK 4WD CONTROL UNIT
Check 4WD control unit harness connector for disconnection and deformation.
Is the inspection result normal?
YES
>> Replace 4WD control unit. Refer to
(RHD models).
NO
>> Repair or replace damaged parts.
DTC
Items
(CONSULT-III screen terms)
Diagnostic item is detected when...
Possible cause
U1010
CONTROL UNIT (CAN)
When detecting error during the initial di-
agnosis of CAN controller of 4WD con-
trol unit.
4WD control unit error
DLN-26
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POWER SUPPLY AND GROUND CIRCUIT
POWER SUPPLY AND GROUND CIRCUIT
Description
INFOID:0000000000972099
Supplies power to 4WD control unit.
Diagnosis Procedure
INFOID:0000000000972100
1.
CHECK 4WD CONTROL UNIT POWER SUPPLY
1.
Turn the ignition switch OFF.
2.
Disconnect 4WD control unit harness connector.
3.
Check the voltage between 4WD control unit harness connector and ground.
4.
Turn the ignition switch ON.
CAUTION:
Never start the engine.
5.
Check the voltage between 4WD control unit harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>>
Check the following. If any items are damaged, repair or replace damaged parts.
• 10A fuse (#45) open
- Short among 10A fuse (#45) connector, 4WD control unit harness connector No. 7 terminal and
the ground
- Open between the ignition switch and 4WD control unit harness connector No. 7 terminal
• Ignition switch. Refer to
(with Intelligent Key system),
(without Intelligent Key system).
2.
CHECK 4WD SOLENOID POWER SUPPLY
1.
Turn the ignition switch OFF.
2.
Check the voltage between 4WD control unit harness connector and ground.
3.
Turn the ignition switch ON.
CAUTION:
Never start the engine.
4.
Check the voltage between 4WD control unit harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>>
Check the following. If any items are damaged, repair or replace damaged parts.
• 10A fuse (#32) open
4WD control unit
Voltage (Approx.)
Connector
Terminal
M69
7 – Ground
0 V
4WD control unit
Voltage (Approx.)
Connector
Terminal
M69
7 – Ground
Battery voltage
4WD control unit
Voltage (Approx.)
Connector
Terminal
M69
9 – Ground
Battery voltage
4WD control unit
Voltage (Approx.)
Connector
Terminal
M69
9 – Ground
Battery voltage
POWER SUPPLY AND GROUND CIRCUIT
DLN-27
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- Short among 10A fuse (#32) connector, 4WD control unit harness connector No. 9 terminal and
the ground
- Open between the battery and 4WD control unit harness connector No. 9 terminal
3.
CHECK 4WD SOLENOID VALVE GROUND
1.
Turn the ignition switch OFF.
2.
Check the continuity between 4WD control unit harness connector and ground.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Repair or replace damaged parts.
4WD control unit
Continuity
Connector
Terminal
M69
10 – Ground
Existed
11 – Ground
DLN-28
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4WD WARNING LAMP
4WD WARNING LAMP
Description
INFOID:0000000000972101
• Turns ON when there is a malfunction in 4WD system. It indicates that fail-safe mode is engaged and vehi-
cle change to front-wheel drive or shifting driving force-4WD (Rear-wheels still have some driving torque).
• Also turns ON when ignition switch is turned ON, for purpose of lamp check. Turns OFF approximately for 1
second after the engine starts if system is normal.
4WD WARNING LAMP INDICATION
CAUTION:
4WD warning lamp also turns ON due to data reception error, CAN communication error etc.
Diagnosis Procedure
INFOID:0000000000972102
1.
CHECK POWER SUPPLY AND GROUND CIRCUIT
Perform the trouble diagnosis for power supply and ground circuit. Refer to
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair or replace the malfunctioning part.
2.
PERFORM SELF-DIAGNOSIS
With CONSULT-III
Perform 4WD control unit self-diagnosis.
Is DTC “U1000” detected?
YES
>> CAN specification chart. Refer to
LAN-46, "Trouble Diagnosis Flow Chart"
NO
>> GO TO 3.
3.
PERFORM COMBINATION METER SELF-DIAGNOSIS
With CONSULT-III
Perform combination meter self-diagnosis.
Is any error system detected?
YES
>> Check the error system.
NO
>> GO TO 4.
4.
CHECK 4WD WARNING LAMP SGNAL
With CONSULT-III
1.
Turn the ignition switch ON.
CAUTION:
Never start the engine.
2.
Check “4WD WARN LAMP” of 4WD control unit CONSULT-III “DATA MONITOR”.
Does the item on “DATA MONITOR” indicate “On”?
YES
>> Replace combination meter. Refer to
NO
>> Replace 4WD control unit. Refer to
(RHD models).
Condition
4WD warning lamp
Lamp check
Turns ON when ignition switch is turned ON. Turns OFF ap-
prox. 1 second after engine start.
4WD system malfunction
ON
Protection function is activated due to heavy load to electric controlled
coupling. (4WD system is not malfunctioning and 4WD system chang-
es to 2WD mode.)
Quick blinking: 2 times/second
(Blinking in approx. 1 minute and then turning OFF)
Large difference in diameter of front/rear tires
Slow blinking: 1 time/2 seconds
(Continuing to blink until turning ignition switch OFF)
Other than above (system normal)
OFF
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