Nissan Qashqai J11. Manual — part 797
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< BASIC INSPECTION >
[TRANSFER: TY30A]
DIAGNOSIS AND REPAIR WORKFLOW
BASIC INSPECTION
DIAGNOSIS AND REPAIR WORKFLOW
Work Flow
INFOID:0000000010288262
DETAILED FLOW
1.
INTERVIEW FROM THE CUSTOMER
Clarify customer complaints before inspection. First of all, reproduce symptoms, and understand them fully.
Ask customer about his/her complaints carefully. Check symptoms by driving vehicle with customer, if neces-
sary.
CAUTION:
Customers are not professional. Never guess easily like “maybe the customer means that...,” or
“maybe the customer mentions this symptom”.
>> GO TO 2.
2.
CHECK AWD WARNING LAMP
Start engine and drive at 30 km/h (19 MPH) or more for approx. 1 minute.
Does AWD warning lamp turn ON?
YES
>> GO TO 3.
NO
>> GO TO 6.
3.
PERFORM SELF-DIAGNOSIS
With CONSULT
1.
Perform AWD control unit self-diagnosis.
2.
Perform malfunction detected by self-diagnosis.
3.
Erase AWD control unit self-diagnosis results.
>> GO TO 4.
4.
CHECK TERMINALS AND HARNESS CONNECTORS
Check pin terminals for damage or loose connection with harness connector.
>> GO TO 5.
5.
CHECK SYMPTOM REPRODUCTION
With CONSULT
Perform DTC reproduction procedure for the error system.
Is any error detected?
YES
>> GO TO 2.
NO
>> GO TO 6.
6.
PERFORM SYMPTOM DIAGNOSIS
Perform the symptom diagnosis for each system.
Is any malfunction present?
YES
>> GO TO 2.
NO
>> GO TO 7.
7.
FINAL CHECK
With CONSULT
Check input/output signal standard of AWD control unit.
Is the input/output the standard value?
YES
>> INSPECTION END
NO
>> GO TO 2.
AWD SYSTEM
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< SYSTEM DESCRIPTION >
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SYSTEM DESCRIPTION
AWD SYSTEM
System Diagram
INFOID:0000000010288263
CONTROL DIAGRAM
CROSS-SECTIONAL VIEW (M/T)
*: With ESP
E1DIA0343GB
DLN-106
< SYSTEM DESCRIPTION >
[TRANSFER: TY30A]
AWD SYSTEM
System Description
INFOID:0000000010288264
DESCRIPTION
• AWD controls distribution of drive power between front-wheel drive (100:0) and AWD (50:50) conditions
according to signals from sensors.
• It transmits/receives each signal from the following control unit via CAN communication line.
*: With ESP
AUTO Mode
• Electronic control allows optimal distribution of torque to front/rear wheels to match road conditions.
• AWD mode makes possible stable driving, with no wheel spin, on snowy roads or other slippery surfaces.
• On roads which do not require AWD, AUTO mode contributes to improved fuel economy by driving in condi-
tions close to front-wheel drive.
• Sensor inputs determine the vehicle's turning condition, and tight cornering/braking are controlled by distrib-
uting optimum torque to rear wheels.
LOCK Mode
1.
Transfer case
2.
Adapter case
3.
Ring gear shaft
4.
Ring gear
5.
Companion flange
6.
Drive pinion
JSDIA0206ZZ
Component parts
Function
ABS actuator and electric unit (control unit)
Transmits the following signals via CAN communication to AWD control unit.
• Vehicle speed signal
• Stop lamp switch signal (brake signal)
ECM
Transmits the following signals via CAN communication to AWD control unit.
• Accelerator pedal position signal
• Engine speed signal
Combination meter
Transmits conditions of parking brake switch signal via CAN communication to AWD con-
trol unit.
Steering angle sensor*
Transmits conditions of steering angle sensor signal via CAN communication to AWD
control unit.
AWD SYSTEM
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< SYSTEM DESCRIPTION >
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• Front/rear wheel torque distribution is fixed, ensuring stable driving when climbing slopes.
• Vehicle will switch automatically to AUTO mode if vehicle speed increases. If vehicle speed then decreases,
the vehicle automatically returns to direct 4-wheel driving conditions.
NOTE:
If there is a significant difference in pressure or wear between tires, full vehicle performance is not available.
LOCK mode may be prohibited, or speeds at which LOCK mode is enabled may be restricted detecting tire
conditions.
2WD Mode
Vehicle is in front-wheel drive.
NOTE:
• If front wheels are slipping in 2WD mode, do not switch to AUTO or LOCK. This can cause difficulties for the
system.
• Even if the AWD mode switch is in 2WD mode, the AWD control unit occasionally automatically change to
AUTO mode depending on the driving condition (For example; Depressing the acceleration firmly). This is
not malfunction. However, AWD indicator lamp dose not illuminate.
POWER TRANSFER DIAGRAM
OPERATION PRINCIPLE
Electric Controlled Coupling
1.
The AWD control unit supplies command current to electric con-
trolled coupling (AWD solenoid).
2.
The control clutch is engaged by electromagnet and torque is
detected in control clutch.
3.
The cam operates in response to control clutch torque and
applies pressure to main clutch.
4.
The main clutch transmits torque to front wheels according to
pressing power.
• Transmission torque to the rear wheels is determined accord-
ing to command current.
1.
Engine
2.
Transaxle
3.
Transfer
4.
Propeller shaft
5.
Electric controlled coupling
6.
Rear final drive
JSDIA0208ZZ
SFIA0284E
SDIA1844E
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