Infiniti QX56 (Z62). Manual — part 474
DLN-96
< DTC/CIRCUIT DIAGNOSIS >
[TRANSFER: ATX90A]
POWER SUPPLY AND GROUND CIRCUIT
Is the inspection result normal?
YES
>> GO TO 10.
NO
>> Repair or replace error-detected parts.
10.
CHECK 4WD SWITCH ASSEMBLY GROUND
1.
Turn the ignition switch OFF.
2.
Check the voltage between transfer control unit harness connector and ground.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Repair or replace error-detected parts.
4WD switch assembly
—
Voltage
Connector
Terminal
M54
20
Ground
Approx. 0 V
4WD WARNING LAMP
DLN-97
< DTC/CIRCUIT DIAGNOSIS >
[TRANSFER: ATX90A]
C
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G
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DLN
N
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4WD WARNING LAMP
Component Function Check
INFOID:0000000006222308
1.
CHECK 4WD WARNING LAMP FUNCTION
1.
Turn the ignition switch OFF to ON.
2.
Check that 4WD warning lamp light up.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Proceed diagnosis procedure. Refer to
.
Diagnosis Procedure
INFOID:0000000006222309
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 error-detected parts.
2.
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 3.
3.
CHECK 4WD WARNING LAMP SIGNAL
With CONSULT-III
1.
Turn the ignition switch ON.
CAUTION:
Never start the engine.
2.
Check “4WD FAIL LAMP” of CONSULT-III “DATA MONITOR” for “ALL MODE AWD/4WD”.
Does the item on “DATA MONITOR” indicate “On”?
YES
>> Check combination meter. Refer to
MWI-64, "COMBINATION METER : Diagnosis Procedure"
NO
>> Replace transfer control unit. Refer to
DLN-98
< DTC/CIRCUIT DIAGNOSIS >
[TRANSFER: ATX90A]
4WD INDICATOR LAMP
4WD INDICATOR LAMP
Component Function Check
INFOID:0000000006222310
1.
CHECK 4WD MODE INDICATOR LAMP FUNCTION
1.
Start the engine
CAUTION:
Never drive the vehicle.
2.
Turn the 4WD shift switch AUTO
⇒
4H
⇒
4LO
⇒
4H
⇒
AUTO.
3.
Check the 4WD shift switch position (“AUTO”, “4H” and “4L”) and the indication of the 4WD mode indica-
tor lamp mutually coincide.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Proceed to diagnosis procedure. Refer to
Diagnosis Procedure
INFOID:0000000006222311
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 error-detected parts.
2.
CHECK 4WD WARNING LAMP SIGNAL
With CONSULT-III
1.
Strat the engine.
CAUTION:
Never drive the vehicle.
2.
Turn the 4WD shift switch AUTO
⇒
4H
⇒
4LO
⇒
4H
⇒
AUTO.
3.
Check “4WD MODE IND” of CONSULT-III “DATA MONITOR” for “ALL MODE AWD/4WD”.
Is the inspection result normal?
YES
>> Check combination meter. Refer to
MWI-64, "COMBINATION METER : Diagnosis Procedure"
NO
>> Replace transfer control unit. Refer to
DLN-107, "Removal and Installation"
.
Monitor item
Condition
Status
4WD MODE IND
4WD shift switch: AUTO
AUTO
4WD shift switch: 4H
4H
4WD shift switch: 4L
4L
HEAVY TIGHT-CORNER BRAKING SYMPTOM OCCURS
DLN-99
< SYMPTOM DIAGNOSIS >
[TRANSFER: ATX90A]
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SYMPTOM DIAGNOSIS
HEAVY TIGHT-CORNER BRAKING SYMPTOM OCCURS
Description
INFOID:0000000006222312
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:0000000006222313
1.
PERFORM ECM SELF-DIAGNOSIS
With CONSULT-III
Perform self-diagnosis for “ECM”.
Is any DTC detected?
YES
>> Check the DTC. Refer to
NO
>> GO TO 2.
2.
PERFORM SELF-DIAGNOSIS
With CONSULT-III
Perform self-diagnosis for “ALL MODE AWD/4WD”.
Is any DTC detected?
YES
>> Check the DTC. Refer to
NO
>> GO TO 3.
3.
CHECK TRANSFER INTERNAL FUNCTION
With CONSULT-III
1.
Remove transfer control actuator. Refer to
DLN-114, "Removal and Installation"
2.
Turn the actuator shaft. Refer to
.
3.
Check “ROTARY POSI SEN” of CONSULT-III “DATA MONITOR” for “ALL MODE AWD/4WD”.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Transfer assembly is mechanical malfunction. Replace transfer assembly. Refer to
.
Monitor item
Condition
Status
ROTARY POSI SEN
Turn the actuator shaft.
Value is changing
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