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POWER SUPPLY AND GROUND CIRCUITDLN-95
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2. Disconnect 4WD switch assembly harness connector.
3. Check the voltage between 4 INFINITI QX56 2011 Factory Service Manual
POWER SUPPLY AND GROUND CIRCUITDLN-95
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2. Disconnect 4WD switch assembly harness connector.
3. Check the voltage between 4](/manual-img/42/57033/w960_57033-1896.png)
POWER SUPPLY AND GROUND CIRCUITDLN-95
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2. Disconnect 4WD switch assembly harness connector.
3. Check the voltage between 4WD switch assembly harness connector and ground.
4. Turn the ignition switch ON. CAUTION:
Never start the engine.
5. Check the voltage between 4WD switch assembly harness connector and ground.
Is the inspection result normal?
YES >> GO TO 9.
NO >> GO TO 8.
8.CHECK 4WD SWITCH ASSEMBLY POWER SUPPLY (2)
1. Turn the ignition switch OFF.
2. Check the 10A fuse (#13).
3. Disconnect fuse block (J/B) harness connector.
4. Check the continuity between transfer control unit harness connector and IPDM E/R harness connector.
5. Check the continuity between transfer control unit harness connector and the ground.
Is the inspection result normal?
YES >> Perform the trouble diagnosis for ignition power supply circuit. Refer to PG-89, "Wiring Diagram -
IGNITION POWER SUPPLY -".
NO >> Repair or replace error-detected parts.
9.CHECK TRANSFER CONTROL UNIT GROUND
1. Turn the ignition switch OFF.
2. Check the voltage between transfer control unit harness connector and ground.
3. Check the continuity between transfer control unit harness connector and ground.
4WD switch assembly — Voltage
Connector Terminal
M54 12 Ground Approx. 0 V
4WD switch assembly — Voltage
Connector Terminal
M54 12 Ground Battery voltage
Fuse block (J/B) 4WD switch assembly Continuity
Connector Terminal Connector Terminal
M3 10C M54 12 Existed
4WD switch assembly —Continuity
Connector Terminal
M54 12 Ground Not existed
Transfer control unit — Voltage
Connector Terminal
E60 44
Ground Approx. 0 V
46
Transfer control unit —Continuity
Connector Terminal
E60 44
Ground Existed
46
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DLN-96
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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
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4WD WARNING LAMPDLN-97
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4WD WARNING LAMP
Component Function CheckINFOID:0000000006222308
1.CHECK 4WD WARNING LAMP FUNCTION INFINITI QX56 2011 Factory Service Manual
4WD WARNING LAMPDLN-97
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4WD WARNING LAMP
Component Function CheckINFOID:0000000006222308
1.CHECK 4WD WARNING LAMP FUNCTION](/manual-img/42/57033/w960_57033-1898.png)
4WD WARNING LAMPDLN-97
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4WD WARNING LAMP
Component Function CheckINFOID: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 DLN-97, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000006222309
1.CHECK POWER SUPPLY AND GROUND CIRCUIT
Perform the trouble diagnosis for power supply and ground circuit. Refer to DLN-64, "
Diagnosis Procedure".
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-107, "
Removal and Installation".
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DLN-98
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4WD INDICATOR LAMP
4WD INDICATOR LAMP
Component Function CheckINFOID:0000000006222310
1.CHECK 4WD MODE INDICATOR LAMP FUNCTION
1. Start the engine INFINITI QX56 2011 Factory Service Manual
DLN-98
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4WD INDICATOR LAMP
4WD INDICATOR LAMP
Component Function CheckINFOID:0000000006222310
1.CHECK 4WD MODE INDICATOR LAMP FUNCTION
1. Start the engine](/manual-img/42/57033/w960_57033-1899.png)
DLN-98
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4WD INDICATOR LAMP
4WD INDICATOR LAMP
Component Function CheckINFOID: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 DLN-98, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000006222311
1.CHECK POWER SUPPLY AND GROUND CIRCUIT
Perform the trouble diagnosis for power supply and ground circuit. Refer to DLN-64, "
Diagnosis Procedure".
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
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HEAVY TIGHT-CORNER BRAKING SYMPTOM OCCURS
DLN-99
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SYMPTOM DIAGNOSIS
HEAVY TIGHT-CORNER BRAKING SYMPTOM OCCURS
DescriptionINFOI INFINITI QX56 2011 Factory Service Manual
HEAVY TIGHT-CORNER BRAKING SYMPTOM OCCURS
DLN-99
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SYMPTOM DIAGNOSIS
HEAVY TIGHT-CORNER BRAKING SYMPTOM OCCURS
DescriptionINFOI](/manual-img/42/57033/w960_57033-1900.png)
HEAVY TIGHT-CORNER BRAKING SYMPTOM OCCURS
DLN-99
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SYMPTOM DIAGNOSIS
HEAVY TIGHT-CORNER BRAKING SYMPTOM OCCURS
DescriptionINFOID:0000000006222312
Heavy tight-corner braking symptom o ccurs 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 dependi ng on driving conditions. This is not malfunction.
Diagnosis ProcedureINFOID:0000000006222313
1.PERFORM ECM SELF-DIAGNOSIS
With CONSULT-III
Perform self-diagnosis for “ECM”.
Is any DTC detected?
YES >> Check the DTC. Refer to EC-98, "DTC Index".
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 DLN-29, "DTC Index".
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 DLN-114, "
Inspection".
3. Check “ROTARY POSI SEN” of CONSULT-II I “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 DLN-121,
"Removal and Installation".
Monitor item Condition Status
ROTARY POSI SEN Turn the actuator shaft. Value is changing
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DLN-100
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4WD MODE DOES NOT CHANGE
4WD MODE DOES NOT CHANGE
DescriptionINFOID:0000000006222314
Vehicle does not enter 4-wheel drive mode even though 4WD warning INFINITI QX56 2011 Factory Service Manual
DLN-100
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4WD MODE DOES NOT CHANGE
4WD MODE DOES NOT CHANGE
DescriptionINFOID:0000000006222314
Vehicle does not enter 4-wheel drive mode even though 4WD warning](/manual-img/42/57033/w960_57033-1901.png)
DLN-100
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4WD MODE DOES NOT CHANGE
4WD MODE DOES NOT CHANGE
DescriptionINFOID:0000000006222314
Vehicle does not enter 4-wheel drive mode even though 4WD warning lamp turned to OFF.
Diagnosis ProcedureINFOID:0000000006222315
1.PERFORM SELF-DIAGNOSIS
With CONSULT-III
Perform self-diagnosis for “ALL MODE AWD/4WD”.
Is any DTC detected?
YES >> Check DTC. Refer to DLN-29, "DTC Index".
NO >> GO TO 2.
2.CHECK 4WD MODE INDICATOR LAMP
Check 4WD mode indicator lamp function. Refer to DLN-98, "
Component Function Check".
Is the inspection result normal?
YES >> GO TO 3.
NO >> Proceed to diagnosis procedure. Refer to DLN-98, "
Diagnosis Procedure".
3.CHECK 4WD SHIFT SWITCH
Perform rouble diagnosis of the 4WD shift switch. Refer to DLN-67, "
Diagnosis Procedure".
Is the inspection result normal?
YES >> Transfer assembly is mechanical malfunction. Replace transfer assembly. Refer to DLN-121,
"Removal and Installation".
NO >> Replace 4WD switch assembly. Refer to DLN-108, "
Removal and Installation".
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4WD MODE INDICATOR LAMP CONTINUES BLINKINGDLN-101
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4WD MODE INDICATOR LAMP CONTINUES BLINKING
DescriptionINFOID:00000000062223 INFINITI QX56 2011 Factory Service Manual
4WD MODE INDICATOR LAMP CONTINUES BLINKINGDLN-101
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4WD MODE INDICATOR LAMP CONTINUES BLINKING
DescriptionINFOID:00000000062223](/manual-img/42/57033/w960_57033-1902.png)
4WD MODE INDICATOR LAMP CONTINUES BLINKINGDLN-101
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4WD MODE INDICATOR LAMP CONTINUES BLINKING
DescriptionINFOID:0000000006222316
After shift the 4WD mode 4H to 4L, 4WD mode indicator lamp continues to blink.
Diagnosis ProcedureINFOID:0000000006222317
1.MOVE THE VEHICLE
Move the vehicle back and forth.
Does the 4WD indicator lamp stop to blink?
YES >> INSPECTION END
NO >> GO TO 2.
2.CHECK 4WD MODE INDICATOR LAMP
Check 4WD mode indicator lamp function. Refer to DLN-98, "
Component Function Check".
Is the inspection result normal?
YES >> GO TO 3.
NO >> Proceed to diagnosis procedure. Refer to DLN-98, "
Diagnosis Procedure".
3.PERFORM SELF-DIAGNOSIS
With CONSULT-III
Perform self-diagnosis for “ALL MODE AWD/4WD”.
Is any DTC detected?
YES >> Check DTC. Refer to DLN-29, "DTC Index".
NO >> Transfer assembly is mechanical malfunction. Replace transfer assembly. Refer to DLN-121,
"Removal and Installation".
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DLN-102
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4WD WARNING LAMP BLINKS QUICKLY
4WD WARNING LAMP BLINKS QUICKLY
DescriptionINFOID:0000000006222318
While driving, 4WD 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, opt ional 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.
Revision: 2010 May2011 QX56