Nissan Qashqai (2007-2010). Manual — part 616
4WD CONTROL UNIT
DLN-37
< ECU DIAGNOSIS >
[TRANSFER: TY30A]
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• 4WD system activates its protection function (shuts down 4WD system temporarily) if 4WD system detects
high load continuously or the front wheel tire size differs from the rear tire size. (4WD system is automatically
restored if 4WD system no longer detects any overload or the tire size difference is eliminated.)
*1: Quick blinking: 2 times/second (blinking for approx. 1 minute and then turned OFF)
*2: Slow blinking: 1 time/2 seconds (Continuing to blink until ignition switch is turned OFF)
DTC Inspection Priority Chart
INFOID:0000000000972106
If some DTCs are displayed at the same time, perform inspections one by one based on the following priority
chart.
DTC Index
INFOID:0000000000972107
Mode
Warning
lamp
DTC
Detected area (Error area)
Error area and root cause
Protection
function
Blinking
*1
—
4WD control unit
Transfer assembly in protection mode
(Internal temperature rise of electronic controlled coupling)
Blinking
*2
—
Outer diameters of front and
rear wheel tires
Malfunction in each tire or different tire diameter
Fail-safe
ON
C1201
4WD control unit
Internal malfunction of 4WD control unit
C1203
ABS actuator and electric
unit (control unit)
ABS malfunction
• Vehicle speed signal error
• Stop lamp switch signal (brake signal) error
C1204
4WD solenoid
Internal malfunction of electronic controlled coupling
C1205
4WD control unit
Internal malfunction of 4WD control unit
C1209
4WD mode switch
Malfunction of 4WD mode switch or 4WD mode switch circuit
C1210
ECM
Malfunction of engine control system
• Accelerator pedal position signal error
• Engine speed signal error
U1000
CAN communication line
CAN communication line error
U1010
4WD control unit
4WD control unit error
Priority
Detected items (DTC)
1
• U1000 CAN COMM CIRCUIT
• U1010 CONTROL UNIT (CAN)
2
• C1201 CONTROLLER FAILURE
• C1205 4WD ACTUATOR RLY
3
• C1203 ABS SYSTEM
• C1210 ENGINE SIGNAL 1
4
• C1204 4WD SOLENOID
• C1209 MODE SW
DTC
Items
(CONSULT-III screen terms)
Reference
C1201
CONTROLLER FAILURE
C1203
ABS SYSTEM
C1204
4WD SOLENOID
C1205
4WD ACTUATOR RLY
C1209
MODE SW
C1210
ENGINE SIGNAL 1
U1000
CAN COMM CIRCUIT
U1010
CONTROL UNIT (CAN)
DLN-38
< SYMPTOM DIAGNOSIS >
[TRANSFER: TY30A]
4WD SYSTEM SYMPTOMS
SYMPTOM DIAGNOSIS
4WD SYSTEM SYMPTOMS
Symptom Table
INFOID:0000000000972108
If 4WD warning lamp turns ON, perform self-diagnosis.
NOTE:
Light tight-corner braking symptom may occur depending on driving conditions. This is not malfunction.
Symptom
Condition
Check item
Reference
4WD warning lamp does not turn ON when
the ignition switch is turned to ON.
(4WD warning lamp check)
Ignition switch: ON
Power supply and ground for 4WD con-
trol unit
CAN communication line
4WD control unit
Combination meter
4WD warning lamp does not turn OFF sev-
eral seconds after engine started.
Engine running
4WD control unit self-diagnosis
4WD warning lamp
Power supply and ground for 4WD con-
trol unit
Heavy tight-corner braking symptom occurs
when the vehicle is driven and the steering
wheel is turned fully to either side after the
engine is started. (See NOTE.)
• While driving
• Steering wheel is
turned fully to either
sides
ECM self-diagnosis
4WD control unit self-diagnosis
4WD solenoid
Mechanical malfunction of electric con-
trolled coupling (clutch sticking etc.)
Vehicle does not enter 4WD mode even
though 4WD warning lamp turned to OFF.
While driving
CAN communication line
4WD solenoid
Mechanical malfunction of electric con-
trolled coupling (Mechanical engage-
ment of clutch is not possible.)
While driving, 4WD warning lamp blinks
quickly. (When blinking in approx. 1 minute
and then turning OFF.)
Quick blinking: 2 times/second
While driving
Protection function is activated due to
heavy load to electric controlled cou-
pling. (4WD system is not malfunction-
ing. Also, optional distribution of torque
sometimes becomes rigid before lamp
blinks quickly, but it is not malfunction.)
While driving, 4WD warning lamp blinks
slowly. (When continuing to blink until turn-
ing ignition switch OFF)
Slow blinking: 1 time/2 seconds
• While driving
• Vehicle speed: 20 km/h
(12 MPH) or more
Tire size is different between front and
rear of vehicle.
4WD WARNING LAMP DOES NOT TURN ON
DLN-39
< SYMPTOM DIAGNOSIS >
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4WD WARNING LAMP DOES NOT TURN ON
Description
INFOID:0000000000972109
4WD warning lamp does not turn ON when the ignition switch is turned to ON.
Diagnosis Procedure
INFOID:0000000000972110
1.
CHECK 4WD WARNING LAMP
Perform the trouble diagnosis for 4WD warning lamp. Refer to
Is the inspection result normal?
YES
>> Check each harness connector pin terminal for malfunction or disconnection.
NO
>> Repair or replace the malfunctioning part.
DLN-40
< SYMPTOM DIAGNOSIS >
[TRANSFER: TY30A]
4WD WARNING LAMP DOES NOT TURN OFF
4WD WARNING LAMP DOES NOT TURN OFF
Description
INFOID:0000000000972111
4WD warning lamp does not turn OFF several seconds after engine started.
Diagnosis Procedure
INFOID:0000000000972112
1.
PERFORM SELF-DIAGNOSIS
With CONSULT-III
Perform 4WD control unit self-diagnosis.
Is any error system detected?
YES
>> Check the error system.
NO
>> GO TO 2.
2.
CHECK 4WD WARNING LAMP
Perform the trouble diagnosis of the 4WD warning lamp. Refer to
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace the malfunctioning part.
3.
CHECK 4WD CONTROL UNIT POWER SUPPLY AND GROUND CIRCUIT
Perform the trouble diagnosis of the power supply and ground circuit. Refer to
.
Is the inspection result normal?
YES
>> Check each harness connector pin terminal for malfunction or disconnection.
NO
>> Repair or replace the malfunctioning part.
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