heating INFINITI QX56 2010 Factory Owner's Manual

HAC-116
< SYMPTOM DIAGNOSIS >[AUTOMATIC AIR CONDITIONER]
INSUFFICIENT HEATING
INSUFFICIENT HEATING
Component Function CheckINFOID:0000000005147739
SYMPTOM: Insufficient heating
INSPECTION FLOW
1.CONFIRM SYMPTOM BY PERFORMING OPER
ATIONAL CHECK - TEMPERATURE INCREASE
1. Press the AUTO switch.
2. Turn the temperature control dial (driver) clockwise until 32 °C (90° F) is displayed.
3. Check for hot air at discharge air outlets.
Can this symptom be duplicated?
YES >> GO TO 2.
NO >> Perform complete system operational check. Refer to HAC-4, "
Operational Check (Front)".
2.CHECK FOR SERVICE BULLETINS
Check for any service bulletins.
>> GO TO 3.
3.PERFORM SELF-DIAGNOSIS
Perform self-diagnosis. Refer to HAC-23, "
A/C Auto Amp. Self-Diagnosis".
Is the inspection result normal?
YES >> GO TO 4.
NO >> Refer to HAC-24, "
A/C System Self-Diagnosis Code Chart".
4.CHECK ENGINE COOLING SYSTEM
1. Check for proper engine coolant level. Refer to CO-10, "
Inspection".
2. Check hoses for leaks or kinks.
3. Check radiator cap. Refer to CO-10, "
Inspection".
4. Check for air in cooling system.
>> GO TO 5.
5.CHECK AIR MIX DOOR OPERATION
Check the operation of the air mix door.
Is the inspection result normal?
YES >> GO TO 6.
NO >> Check the air mix door motor circuit. Refer to HAC-31, "
Air Mix Door Motor (Driver) Component
Function Check".
6.CHECK AIR DUCTS
Check for disconnected or leaking air ducts.
Is the inspection result normal?
YES >> GO TO 7.
NO >> Repair all disconnected or leaking air ducts.
7.CHECK HEATER HOSE TEMPERATURES
1. Start engine and warm it up to normal operating temperature.
2. Touch both the inlet and outlet heater hoses. The inlet hose should be hot and the outlet hose should be
warm.
Is the inspection result normal?
YES >> Hot inlet hose and a warm outlet hose: GO TO 8.
NO >> • Inlet hose cold: GO TO 11. • Both hoses warm: GO TO 9.
8.CHECK ENGINE COOLANT SYSTEM
Revision: April 20092010 QX56

INSUFFICIENT HEATINGHAC-117
< SYMPTOM DIAGNOSIS > [AUTOMATIC AIR CONDITIONER]
C
D
E
F
G H
J
K L
M A
B
HAC
N
O P
Check engine coolant temperature sensor. Refer to EC-123, "Component Inspection".
Is the inspection result normal?
YES >> System OK.
NO >> Repair or replace as necessary. Retest.
9.CHECK HEATER HOSES
Check heater hoses for proper installation.
Is the inspection result normal?
YES >> System OK.
NO >> 1. Back flush heater core. 2. Drain the water from the system.
3. Refill system with new engine coolant. Refer to CO-11, "
Changing Engine Coolant".
4. GO TO 10 to retest.
10.CHECK HEATER HOSE TEMPERATURES
1. Start engine and warm it up to normal operating temperature.
2. Touch both the inlet and outlet heater hoses. The inlet hose should be hot and the outlet hose should be warm.
Is the inspection result normal?
YES >> System OK.
NO >> Replace heater core. Refer to VTL-24, "
Removal and Installation".
11 .CHECK WATER VALVE
Check the operation of the water valve. Refer to HAC-73, "
Water Valve Diagnosis Procedure".
Is the inspection result normal?
YES >> System OK.
NO >> Replace water valve.
Revision: April 20092010 QX56

SE-12
< COMPONENT DIAGNOSIS >
HEATED SEAT
HEATED SEAT
DescriptionINFOID:0000000005147385
• When handling seat, be extremely careful not to scratch heating unit.
• Front passenger seat cushion and seatbacks equipped with airbags cannot be disassembled. They are
replaced as assemblies only.
• Do not use any organic solvent, such as thinner, benzene, alcohol, etc. to clean trim.
WIIA0031E
Revision: April 20092010 QX56

FRONT SEATSE-49
< ON-VEHICLE REPAIR >
C
DE
F
G H
I
K L
M A
B
SE
N
O P
1. Headrest 2. Headrest holder with multi-position
lock 3. Seatback assembly
4. Lumbar switch bezel 5. Power seat switch escutcheon 6. Recliner switch knob
7. Slide switch knob 8. Driver power seat frame assembly 9. Inner leg cover
10. Driver seat wiring harness 11. Bolt cover 12. Seat cushion outer finisher
13. Outer pedestal finisher 14. Seat cushion front finisher15. Seat cushion inner finisher
16. Seat cushion frame 17. Seat cushion heating element 18. Seat cushion pad
19. Seat cushion trim cover 20. Armrest assembly 21. Headrest holder
22. Seat slide/ recline switch 23. Power lumbar switch
Revision: April 20092010 QX56

SECOND SEATSE-53
< ON-VEHICLE REPAIR >
C
DE
F
G H
I
K L
M A
B
SE
N
O P
10. Reclining device inner mid cover 11. Armrest assembly 12. Armrest bolt cover
13. Armrest trim cover 14. Latch assembly 15. Seat cushion mat springs
16. Seat cushion mat 17. Seat cushion frame assembly 18. Seat support trim cover
19. Seat support pad assembly 20. Lower rear seat cover 21. Lower rear seat cover inner
22. Outboard cushion floor latch 23. Seat cushion support frame assem- bly24. Lower rear seat cover outer
25. Seat cushion pad 26. Inner inboard reclining device cover 27. Outer inboard reclining device cover
28. Seat latch and recliner release 29. Reclining device outer mid cover 30. Reclining device lever
31. Reclining device outer cover 32. Seatback trim cover 33. Seat cushion trim cover
34. Seat cushion heating element
Revision: April 20092010 QX56

SECOND SEATSE-55
< ON-VEHICLE REPAIR >
C
DE
F
G H
I
K L
M A
B
SE
N
O P
Second row center
19. Seat cushion support frame assem- bly 20. Inboard cushion floor latch
21. Lower rear seat cover inner
22. Lower rear seat cover 23. Seat support pad assembly 24. Seat support trim cover
25. Seat cushion mat 26. Seat cushion mat springs 27. Latch assembly
28. Armrest assembly 29. Armrest trim cover 30. Reclining device outer cover
31. Reclining device inner mid cover 32. Seatback frame 33. Seat actuator assembly
34. Seat cushion heating element
WIIA1014E
Revision: April 20092010 QX56

SE-56
< ON-VEHICLE REPAIR >
SECOND SEAT
Removal and Installation
INFOID:0000000005147412
Second Row Outboard
Removal
1. Remove seat base trim cover.
2. Lift handle and tilt seat forward.
3. DIsconnect the seat cushion heating element electrical connec- tor.
4. Remove seat anchor nuts, bolts and seat assembly.
Installation
Installation is in the reverse order of removal.
Second Row Center
Removal
1. Tilt the seat cushion forward.
2. Remove the seat anchor bolts.
3. Tilt the seat cushion back and remove the seat.
Installation
Installation is in the reverse order of removal.
1. Seatback pad 2. Armrest finisher 3. Headrest
4. Seat belt retractor cover 5. Seat belt bezel 6. RH headrest guide (free)
7. LH headrest guide (locking) 8. Seatback board 9. Seat bracket cover
10. Armrest pivot bracket cover 11. Seatback frame 12. Seat cushion frame
13. Latch assembly 14. Lower rear pivot bracket support 15. Outer hinge cover
16. Center seat base assembly 17. Link and pivot bracket apron 18. Seat cushion pad
19. Seat cushion trim cover 20. Cushion stop bumper 21. Inner lever cover
22. Seat hinge assembly 23. Seat lever assembly 24. Outer lever cover
25. Seat lock cover 26. Armrest cover 27. Armrest bracket
28. Armrest pad 29. Cup holder 30. Seatback trim cover
LIIA1119E
LIIA1116E
Revision: April 20092010 QX56

FRONT SEATSE-67
< DISASSEMBLY AND ASSEMBLY >
C
DE
F
G H
I
K L
M A
B
SE
N
O P
1. Headrest 2. Headrest holder with multi-position
lock 3. Seatback assembly
4. Lumbar switch bezel 5. Power seat switch escutcheon 6. Recliner switch knob
7. Slide switch knob 8. Driver power seat frame assembly 9. Inner leg cover
10. Driver seat wiring harness 11. Bolt cover 12. Seat cushion outer finisher
13. Outer pedestal finisher 14. Seat cushion front finisher15. Seat cushion inner finisher
16. Seat cushion frame 17. Seat cushion heating element 18. Seat cushion pad
19. Seat cushion trim cover 20. Armrest assembly 21. Headrest holder
22. Seat slide/ recline switch 23. Power lumbar switch
Revision: April 20092010 QX56

SECOND SEATSE-73
< DISASSEMBLY AND ASSEMBLY >
C
DE
F
G H
I
K L
M A
B
SE
N
O P
10. Reclining device inner mid cover 11. Armrest assembly 12. Armrest bolt cover
13. Armrest trim cover 14. Latch assembly 15. Seat cushion mat springs
16. Seat cushion mat 17. Seat cushion frame assembly 18. Seat support trim cover
19. Seat support pad assembly 20. Lower rear seat cover 21. Lower rear seat cover inner
22. Outboard cushion floor latch 23. Seat cushion support frame assem- bly24. Lower rear seat cover outer
25. Seat cushion pad 26. Inner inboard reclining device cover 27. Outer inboard reclining device cover
28. Seat latch and recliner release 29. Reclining device outer mid cover 30. Reclining device lever
31. Reclining device outer cover 32. Seatback trim cover 33. Seat cushion trim cover
34. Seat cushion heating element
Revision: April 20092010 QX56

SE-76
< DISASSEMBLY AND ASSEMBLY >
SECOND SEAT
10. Reclining device lever11. Reclining device outer mid cover 12. Outer inboard reclining device cover
13. Inner inboard reclining device cover 14. Seat cushion trim cover 15. Seat cushion pad
16. Seat cushion frame assembly 17. Lower rear seat cover outer 18. Outboard cushion floor latch
19. Seat cushion support frame assem- bly 20. Inboard cushion floor latch
21. Lower rear seat cover inner
22. Lower rear seat cover 23. Seat support pad assembly 24. Seat support trim cover
25. Seat cushion mat 26. Seat cushion mat springs 27. Latch assembly
28. Armrest assembly 29. Armrest trim cover 30. Reclining device outer cover
31. Reclining device inner mid cover 32. Seatback frame 33. Seat actuator assembly
34. Seat cushion heating element
Revision: April 20092010 QX56