Infiniti FX35, FX50 (S51). Manual — part 552
AWD WARNING LAMP DOES NOT TURN OFF
DLN-43
< SYMPTOM DIAGNOSIS >
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AWD WARNING LAMP DOES NOT TURN OFF
Description
INFOID:0000000005249082
AWD warning lamp does not turn OFF several seconds after the engine started.
Diagnosis Procedure
INFOID:0000000005249083
1.
PERFORM SELF-DIAGNOSIS
With CONSULT-III
Perform self-diagnosis for “ALL MODE AWD/4WD”.
Is any DTC detected?
YES
>> Check the DTC.
NO
>> GO TO 2.
2.
CHECK AWD WARNING LAMP
Perform the trouble diagnosis of the AWD warning lamp. Refer to
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace the error-detected parts.
3.
CHECK AWD 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 error-detected parts.
DLN-44
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HEAVY TIGHT-CORNER BRAKING SYMPTOM OCCURS
HEAVY TIGHT-CORNER BRAKING SYMPTOM OCCURS
Description
INFOID:0000000005249084
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.
NOTE:
Light tight-corner braking symptom may occur depending on driving conditions. This is not malfunction.
Diagnosis Procedure
INFOID:0000000005249085
1.
PERFORM ECM SELF-DIAGNOSIS
With CONSULT-III
Perform self-diagnosis for “ENGINE”.
Is any DTC detected?
YES
>> Check the DTC.
NO
>> GO TO 2.
2.
PERFORM SELF-DIAGNOSIS
With CONSULT-III
Perform self-diagnosis for “ALL MODE AWD/4WD”.
Is DTC “U1000” detected?
YES
>> CAN specification chart. Refer to
LAN-20, "Trouble Diagnosis Flow Chart"
NO
>> GO TO 3.
3.
CHECK TRANSFER FLUID TEMPERATURE SENSOR
Perform the trouble diagnosis of the transfer fluid temperature sensor. Refer to
.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair or replace the error-detected parts.
4.
CHECK AWD SOLENOID
Perform the trouble diagnosis of the AWD solenoid. Refer to
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Repair or replace the error-detected parts.
5.
CHECK ELECTRIC CONTROLLED COUPLING
1.
Turn the ignition switch OFF.
2.
Set the transmission to neutral. Release the parking brake.
3.
Lift up the vehicle.
4.
Rotate the rear propeller shaft.
5.
Hold the front propeller shaft lightly.
Does the front propeller shaft rotate?
YES
>> Replace electric controlled coupling for mechanical malfunction (clutch sticking etc.). Refer to
DLN-88, "VQ35HR : Exploded View"
DLN-92, "VK50VE : Exploded View"
(VK50VE).
NO
>> Check each harness connector pin terminal for disconnection.
VEHICLE DOES NOT ENTER AWD MODE
DLN-45
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VEHICLE DOES NOT ENTER AWD MODE
Description
INFOID:0000000005249086
Vehicle does not enter 4-wheel drive mode even though AWD warning lamp turned to OFF.
Diagnosis Procedure
INFOID:0000000005249087
1.
CHECK AWD WARNING LAMP
Turn the ignition switch ON.
Does AWD warning lamp turn ON?
YES
>> GO TO 2.
NO
>> Proceed to diagnosis procedure. Refer to
2.
CHECK PARKING BRAKE SWITCH SIGNAL
With CONSULT-III
Check “P BRAKE SW” of CONSULT-III “DATA MONITOR” for “ALL MODE AWD/4WD”.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Proceed to diagnosis procedure. Refer to
.
3.
CRUISE TEST
Drive the vehicle for a period of time.
Does any symptom occur?
YES
>> Replace electric controlled coupling for mechanical malfunction (mechanical engagement of
clutch is not possible). Refer to
DLN-88, "VQ35HR : Exploded View"
(VK50VE).
NO
>> Check each harness connector pin terminal for disconnection.
Monitor Item
Condition
Status
P BRAKE SW
When the parking brake pedal is operation.
ON
When the parking brake pedal is not operation.
OFF
DLN-46
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AWD WARNING LAMP BLINKS QUICKLY
AWD WARNING LAMP BLINKS QUICKLY
Description
INFOID:0000000005249088
While driving, AWD warning lamp blinks 2 times in 1 second and it turns OFF after 1 minute.
• This symptom protects drivetrain parts when a heavy load is applied to the electric controlled coupling and
multiple disc clutch temperature increases. Also, optional distribution of torque sometimes becomes rigid
before lamp blinks quickly. Both cases are not malfunction.
• When this symptom occurs, stop vehicle and allow it to idle for some times. Blinking will stop and system will
be restored.
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