ground INFINITI QX56 2011 Factory Service Manual

TAIL LAMP CIRCUITEXL-109
< DTC/CIRCUIT DIAGNOSIS > [XENON TYPE]
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TAIL LAMP CIRCUIT
BODY SIDE
BODY SIDE : Component Function CheckINFOID:0000000006213976
1.CHECK TAIL LAMP OPERATION
CONSULT-III ACTIVE TEST
1. Select “EXTERNAL LAMPS” of IPDM E/R active test item.
2. With operating the test items, chec k that the tail lamp is turned ON.
Is the inspection result normal?
YES >> Tail lamp circuit is normal.
NO >> Refer to EXL-109, "
BODY SIDE : Diagnosis Procedure".
BODY SIDE : Diagnosis ProcedureINFOID:0000000006213977
1.CHECK TAIL LAMP FUSE
1. Turn ignition switch OFF.
2. Check that the following fuses are not fusing.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair the malfunctioning part before replacing the fuse.
2.CHECK TAIL LAMP OUTPUT VOLTAGE
CONSULT-III ACTIVE TEST
1. Disconnect rear combination lamp connector.
2. Turn ignition switch ON.
3. Select “EXTERNAL LAMPS” of IPDM E/R active test item.
4. With operating the test items, check vo ltage between IPDM E/R harness connector and ground.
Is the inspection result normal?
YES >> GO TO 3.
NO >> GO TO 4.
3.CHECK TAIL LAMP OPEN CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect the following connectors.
- IPDM E/R
- Front combination lamp
- Rear combination lamp TAIL : Tail Lamp ON
Off : Tail lamp OFF
Unit Location Fuse No. Capacity
Tail lamp IPDM E/R #46
10 A
#47
(+)
(− )Test item Vo l ta g e
(Approx.)
IPDM E/R
Connector Terminal
E14 38
GroundEXTERNAL
LAMPS TAIL Battery voltage
Off 0 V
44 TAIL Battery voltage
Off 0 V
Revision: 2010 May2011 QX56

EXL-110
< DTC/CIRCUIT DIAGNOSIS >[XENON TYPE]
TAIL LAMP CIRCUIT
- Tail lamp (back door side)
- License plate lamp
3. Check continuity between IPDM E/R harness connec
tor and rear combination lamp harness connector.
Is the inspection result normal?
YES >> GO TO 5.
NO >> Repair or replace harness.
4.CHECK TAIL LAMP SHORT CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect the following connectors.
- IPDM E/R
- Front combination lamp
- Rear combination lamp
- Tail lamp (back door side)
- License plate lamp
3. Check continuity between IP DM E/R harness connector and ground.
Is the inspection result normal?
YES >> Replace IPDM E/R.
NO >> Repair or replace harness.
5.CHECK TAIL LAMP GROUND OPEN CIRCUIT
Check continuity between rear combination lamp harness connector and ground.
Is the inspection result normal?
YES >> Replace rear combination lamp.
NO >> Repair or replace harness.
BACK DOOR SIDE
BACK DOOR SIDE : Co mponent Function CheckINFOID:0000000006238402
1.CHECK TAIL LAMP (BODY SIDE) OPERATION
Check that the tail lamp (body side) is turned ON.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Refer to EXL-109, "
BODY SIDE : Component Function Check".
2.CHECK TAIL LAMP (BACK DOOR SIDE) OPERATION
CONSULT-III ACTIVE TEST
1. Select “EXTERNAL LAMPS” of IPDM E/R active test item.
2. With operating the lighting switch, check that the tail lamp (back door side) is turned ON.
IPDM E/R Rear combination lamp
Continuity
Connector Terminal Connector Terminal
RH E1438 B232
1 Existed
LH 44 B60
IPDM E/R
GroundContinuity
Connector Terminal
RH E1438
Not existed
LH 44
Rear combination lamp
GroundContinuity
Connector Terminal
RH B232 4 Existed
LH B60
Revision: 2010 May2011 QX56

TAIL LAMP CIRCUITEXL-111
< DTC/CIRCUIT DIAGNOSIS > [XENON TYPE]
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Is the inspection result normal?
YES >> Tail lamp (back door side) circuit is normal.
NO >> Refer to E X L - 111 , "
BACK DOOR SIDE : Diagnosis Procedure".
BACK DOOR SIDE : Diagnosis ProcedureINFOID:0000000006238403
1.CHECK TAIL LAMP (BACK DOOR SIDE) BULB
Check the applicable lamp bulb.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Replace bulb.
2.CHECK TAIL LAMP (BACK DOOR SIDE) OPEN CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R connector and tail lamp (back door side) connector.
3. Check continuity between IPDM E/R harness connec tor and tail lamp (back door side) harness connector.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair or replace harness.
3.CHECK TAIL LAMP (BACK DOOR SIDE) GROUND OPEN CIRCUIT
Check continuity between tail lamp (back door side) harness connector and ground.
Is the inspection result normal?
YES >> Check corresponding bulb socket and harness. Repair or replace if necessary.
NO >> Repair or replace harness. TAIL : Tail lamp (back door side) ON
Off : Tail lamp (back door side) OFF
IPDM E/R Tail lamp (back door side)
Continuity
Connector Terminal Connector Terminal
LH E14 44 D169
1 Existed
RH D117
Tail lamp (back door side)
GroundContinuity
Connector Terminal
LH D169 2Existed
RH D117
Revision: 2010 May2011 QX56

EXL-112
< DTC/CIRCUIT DIAGNOSIS >[XENON TYPE]
LICENSE PLATE LAMP CIRCUIT
LICENSE PLATE LAMP CIRCUIT
Component Function CheckINFOID:0000000006213978
1.CHECK TAIL LAMP OPERATION
Check that the tail lamp is turned ON.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Refer to EXL-109, "
BODY SIDE : Component Function Check".
2.CHECK LICENSE PLATE LAMP OPERATION
CONSULT-III ACTIVE TEST
1. Select “EXTERNAL LAMPS” of IPDM E/R active test item.
2. With operating the lighting switch, check t hat the license plate lamp is turned ON.
Is the inspection result normal?
YES >> License plate lamp circuit is normal.
NO >> Refer to EXL-112, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000006213979
1.CHECK LICENSE PLATE LAMP BULB
Check the applicable lamp bulb.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Replace bulb.
2.CHECK LICENSE PLATE LAMP OPEN CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R connector and license plate lamp connector.
3. Check continuity between IPDM E/R harness connector and license plate lamp harness connector.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair or replace harness.
3.CHECK LICENSE PLATE LAMP GROUND OPEN CIRCUIT
Check continuity between license plate lamp harness connector and ground.
Is the inspection result normal?
YES >> Check corresponding bulb socket and harness. Repair or replace if necessary.
NO >> Repair or replace harness. TAIL : License plate lamp ON
Off : License plate lamp OFF
IPDM E/R License plate lamp
Continuity
Connector Terminal Connector Terminal
LH E14 44 D167
1 Existed
RH D168
License plate lamp
GroundContinuity
Connector Terminal
LH D167 2 Existed
RH D168
Revision: 2010 May2011 QX56

EXTERIOR LIGHTING SYSTEM SYMPTOMSEXL-113
< SYMPTOM DIAGNOSIS > [XENON TYPE]
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SYMPTOM DIAGNOSIS
EXTERIOR LIGHTING SYSTEM SYMPTOMS
Symptom TableINFOID:0000000006213980
CAUTION:
Perform the self-diagnosis with CONS ULT-III before the symptom diagnosis. Perform the trouble diag-
nosis if any DTC is detected.
Symptom Possible cause Inspection item
Headlamp does not
switch to the high beam. One sideFuse
 Harness between IPDM E/R
and the front combination lamp
 Front combination lamp
(High beam solenoid)
 IPDM E/R
 Harness between the front com- bination lamp and ground Headlamp (HI) circuit
Refer to
EXL-86, "
Component
Function Check".
Both sides Symptom diagnosis
“BOTH SIDE HEADLAMPS DO NOT SWITCH TO HIGH BEAM”
Refer to
EXL-117, "
Diagnosis Procedure".
High beam indicator lamp is not turned ON.
[Headlamp (HI) is turned ON.] Combination meter Combination meter
Data monitor “HI-BEAM IND”
 BCM (HEAD LAMP) Active test “HEADLAMP”
Headlamp does not
switch to the low beam. One side
Front combination lamp (High
beam solenoid) —
Both sides  Combination switch
 Harness between the combina-
tion switch and BCM
BCM Combination switch
Refer to
BCS-80, "
Symptom Table".
High beam request signal
BCM
 IPDM E/R IPDM E/R
Data monitor “HL HI REQ”
IPDM E/R —
Headlamp is not turned
ON. One sideFuse
 Xenon bulb
 Harness between IPDM E/R
and the front combination lamp
 Front combination lamp (xenon
headlamp)
 IPDM E/R
 Harness between the front com- bination lamp and ground Headlamp (L
O) circuit
Refer to EXL-88, "
Component
Function Check".
Both sides Symptom diagnosis
“BOTH SIDE HEADLAMPS (LO) ARE NOT TURNED ON”
Refer to EXL-118, "
Diagnosis Procedure".
Headlamp is not turned
OFF. When the ignition
switch is turned ON
The ignition switch is
turned OFF (After acti-
vating the battery sav-
er).
IPDM E/R —
Revision: 2010 May2011 QX56

EXTERIOR LIGHTING SYSTEM SYMPTOMSEXL-115
< SYMPTOM DIAGNOSIS > [XENON TYPE]
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Turn signal indicator lamp
does not blink.
(Turn signal i lamp is nor-
mal.) One side Combination meter —
Both sides
(Always)
 Turn signal indicator lamp sig-
nal
-BCM
 Combination meter  Combination meter
Data monitor “TURN IND”
 BCM (FLASHER) Active test “FLASHER”
Both sides
(Only when activating
hazard warn ing lamp
with the ignition switch
OFF)  Combination meter power sup-
ply and ground circuit
 Combination meter Combination meter
Power supply and ground circuit
Refer to
MWI-64, "
COMBINATION
METER : Diagnosis Procedure".
 Hazard warning lamp does not activate.
 Hazard warning lamp continues activating.
(Turn signal is normal.)  Hazard switch
 Harness between hazard
switch and BCM
BCM Hazard switch
Refer to
EXL-105, "
Component
Function Check".
AFS control does not activate.  Harness between AFS control
unit and AFS switch.
 AFS control unit AFS switch
Refer to
EXL-107, "
Component
Function Check".
Headlamp auto aiming does not activate.
(AFS is normal.)  Harness between AFS control
unit and aiming motor
 Front combination lamp (Aiming motor)
 AFS control unit Headlamp levelizer circuit
Refer to
EXL-91, "
Component
Function Check".
AFS OFF indicator lamp is not turned ON.  AFS OFF indicator lamp signal
- Combination meter
- AFS control unit
 Combination meterCombination meter
Data monitor “AFS OFF IND”
Symptom Possible cause Inspection item
Revision: 2010 May2011 QX56

FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY
FL-5
< REMOVAL AND INSTALLATION >
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REMOVAL AND INSTALLATION
FUEL LEVEL SENSOR UNIT, FUEL FI
LTER AND FUEL PUMP ASSEMBLY
Exploded ViewINFOID:0000000006289684
Removal and InstallationINFOID:0000000006289685
WARNING:
Be sure to read “General Precautions” wh en working on the fuel system. Refer to FL-2, "
General Pre-
cautions".
REMOVAL
1. Check fuel level on a level ground. If the fuel level is 7/8 of the fuel tank (full or nearly full), draw appropri-
ate amount of fuel from the fuel tank.
 In the event of malfunction in fuel pump, insert a hose measuring 20mm (0.79 in) in diameter into the
filler opening to draw approximately 20 liters fuel.
2. Release the fuel pressure from the fuel lines. Refer to EC-153, "
Work Procedure".
3. Open fuel filler lid.
4. Open filler cap and release the pressure inside fuel tank.
5. Tilt the second seat toward the front of the vehicle.
6. Peel off floor carpet, then remove inspection hole cover (1) by turning clips (2) clockwise by 90 degrees (b).
1. Lock ring 2. Fuel level sensor unit, fuel filter and
fuel pump assembly3. O-ring
Refer to GI-4, "
Components" for symbols in the figure.
JSBIA0298GB
Guideline : Draw approximately 20 li ters from a full-tank condition.
A : Direction mark
JSBIA0300ZZ
Revision: 2010 May2011 QX56

FL-8
< REMOVAL AND INSTALLATION >
FUEL TANK
FUEL TANK
Exploded ViewINFOID:0000000006289687
Removal and InstallationINFOID:0000000006289688
WARNING:
Be sure to read “General Precautions” when working on the fuel system. Refer to FL-2, "
General Pre-
cautions".
REMOVAL
CAUTION:
Perform work on level place.
1. Check fuel level on a level ground. If the fuel level is 7/8 of the fuel tank (full or nearly full), draw appropri-
ate amount of fuel from the fuel tank.
 In the event of malfunction in fuel pump, insert a hose measuring 20mm (0.79 in) in diameter into the
filler opening to draw approximately 20 liters fuel.
2. Perform steps 2 to 7 of “REMOVAL” in “ FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY” on fuel level sensor unit, fuel filter and fuel pump assembly. Refer to FL-5, "
Removal and
Installation".
1. Fuel tank side protector 2. Fuel tank side protector 3. Fuel tank front protector
4. Fuel tank protector 5. Fuel tank mounting band 6. Fuel tank
7. Clamp 8. Vent hose 9. Vent hose
10. Fuel filler tube 11. Grommet 12. Fuel filler cap
13. Fuel filler tube protector 14. Clip 15. Clamp
16. Fuel filler hose 17. Fuel filler tube 18. Fuel filler hose
19. Fuel filler tube protector
Refer to GI-4, "
Components" for symbols in the figure.
JSBIA0381GB
Guideline : Draw approximately 20 li ters from a full-tank condition.
Revision: 2010 May2011 QX56

PRECAUTIONSFSU-3
< PRECAUTION >
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5. When the repair work is completed, re-connect both battery cables. With the brake pedal released, turn
the push-button ignition switch from ACC position to ON position, then to LOCK position. (The steering
wheel will lock when the push-button ignition switch is turned to LOCK position.)
6. Perform self-diagnosis check of a ll control units using CONSULT-III.
Precaution for Procedure without Cowl Top CoverINFOID:0000000006271994
When performing the procedure after removing cowl top cover, cover
the lower end of windshield with urethane, etc.
Precautions for SuspensionINFOID:0000000006225635
 When installing rubber bushings, the final tightening mu st be carried out under unladen conditions with tires
on ground. Spilled oil might shorten the life of rubb er bushings. Be sure to wipe off any spilled oil.
- Unladen conditions mean that fuel, engine coolant and l ubricant are full. Spare tire, jack, hand tools and
mats are in designated positions.
 After servicing suspension parts, be sure to check wheel alignment.
 Self-lock nuts are not reusable. Always use new ones w hen installing. Since new self-lock nuts are pre-oiled,
tighten as they are.
PIIB3706J
Revision: 2010 May2011 QX56

FSU-6
< PERIODIC MAINTENANCE >
FRONT SUSPENSION ASSEMBLY
PERIODIC MAINTENANCE
FRONT SUSPENSION ASSEMBLY
InspectionINFOID:0000000006225639
MOUNTING INSPECTION
Check the mounting conditions (looseness, backlash) of each component and component conditions (wear,
damage) are normal.
BALL JOINT AXIAL END PLAY
1. Set front wheels in a straight-ahead position.
2. Measure axial end play by playing and moving up/dow n with iron bar or equivalent between lower link or
upper link and steering knuckle.
CAUTION:
 Never depress brake pedal when measuring.
 Never perform with tires on level ground.
 Be careful not to damage ball joint boot. Never damage the installation position by applying
excessive force.
Shock absorber
Check for oil leakage, damage. Replace it if necessary. Axial end play : Refer to
FSU-21, "
Ball Joint".
Revision: 2010 May2011 QX56