INFINITI M35 2007 Factory Service Manual

ATC-130
BLOWER UNIT
Revision: 2007 April2007 M35/M45
Disassembly and AssemblyNJS000IB
1. Intake box (left) 2. In-cabin microfilter 3. Filter cover
4. Intake box (right) 5. Intake door lever 2 6. Intake door motor
7. Intake door link 8. Intake door lever 1 9. Intake lower case
10. Blower motor assembly 11. Motor cover 12. Intake upper case
13. Intake door 1 14. Intake door 2
SJIA1786E

BLOWER MOTOR
ATC-131
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AT C
Revision: 2007 April2007 M35/M45
BLOWER MOTORPFP:27226
Removal and InstallationNJS000HC
REMOVAL
1. Remove instrument passenger lower cover. Refer to IP-10, "INSTRUMENT PANEL ASSEMBLY" .
2. Disconnect blower motor connector.
3. Remove mounting screws, and then remove blower motor.
INSTALLATION
Installation is basically the reverse order of removal.
RJIA4114E

ATC-132
INTAKE DOOR MOTOR
Revision: 2007 April2007 M35/M45
INTAKE DOOR MOTORPFP:27730
Removal and InstallationNJS000HD
REMOVAL
1. Remove ECM with bracket attached. Refer to ATC-129, "BLOWER UNIT" .
2. Remove mounting screws, and then remove intake door motor
from blower unit.
3. Disconnect intake door motor connector.
INSTALLATION
Installation is basically the reverse order of removal.
RJIA4115E

IN-CABIN MICROFILTER
ATC-133
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AT C
Revision: 2007 April2007 M35/M45
IN-CABIN MICROFILTERPFP:27277
Removal and InstallationNJS000I9
FUNCTION
Air inside passenger compartment is kept clean at either recircula-
tion or fresh mode by installing in-cabin microfilter into blower unit.
REPLACEMENT TIMING
Replace in-cabin microfilter.
Refer to MA-9, "
CHASSIS AND BODY MAINTENANCE" in Schedule 1 and MA-10, "CHASSIS AND BODY
MAINTENANCE" in Schedule 2.
When replacing filter, affix a caution label inside the glove box.
REPLACEMENT PROCEDURES
1. Remove glove box. Refer to IP-10, "INSTRUMENT PANEL ASSEMBLY" .
2. Remove filter cover, and then remove in-cabin microfilter.
3. Take out in-cabin microfilter from blower unit.
4. Replace with new one and reinstall on blower unit.
5. Reinstall glove box.
RJIA1331E
RJIA4116E

ATC-134
HEATER & COOLING UNIT ASSEMBLY
Revision: 2007 April2007 M35/M45
HEATER & COOLING UNIT ASSEMBLYPFP:27110
Removal and InstallationNJS000HF
REMOVAL
1. Use a refrigerant collecting equipment (for HFC-134a) to discharge the refrigerant.
2. Drain coolant from cooling system. Refer to CO-11, "
Changing Engine Coolant" (VQ35DE) or CO-40,
"Changing Engine Coolant" (VK45DE).
3. Remove cowl top cover. Refer to EI-18, "
COWL TOP" .
4. Disconnect low-pressure flexible hose and high-pressure pipe 1
from evaporator.
a. Set a disconnector [high-pressure side (SST: 9253089908), low-
pressure side (SST: 9253089916)] on A/C piping.
b. Slide a disconnector toward vehicle front until it clicks.
c. Slide A/C piping toward vehicle front and disconnect it.
CAUTION:
Cap or wrap the joint of low-pressure flexible hose, low-
pressure pipe 1 and high-pressure pipe 1, 2 with suitable
material such as vinyl tape to avoid the entry of air.
5. Remove electric throttle control actuator. Refer to EM-21,
"INTAKE MANIFOLD COLLECTOR" (VQ35DE) or EM-179, "INTAKE MANIFOLD" (VK45DE).
6. Disconnect two heater hoses from heater core.
7. Remove instrument panel & pad. Refer to IP-10, "
INSTRUMENT PANEL ASSEMBLY" .
8. Remove blower unit. Refer to ATC-129, "
BLOWER UNIT" .
9. Remove clips of vehicle harness from steering member.
10. Remove mounting nuts and bolts, and then remove instrument stays.
RJIA4117E
RJIA4118E
RJIA4119E

HEATER & COOLING UNIT ASSEMBLY
ATC-135
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AT C
Revision: 2007 April2007 M35/M45
11. Disconnect drain hose.
12. Remove mounting bolts from heater & cooling unit.
13. Remove side defroster nozzles.
14. Remove steering column assembly mounting bolts and nut.
15. Remove steering member mounting bolts.
16. Remove steering member, and then remove heater & cooling unit.
INSTALLATION
Installation is basically the reverse order of removal.
RJIA4180E
RJIA4120E
SJIA1795E

ATC-136
HEATER & COOLING UNIT ASSEMBLY
Revision: 2007 April2007 M35/M45
CAUTION:

Replace O-rings of low-pressure flexible hose and high-pressure pipe 1 with new ones, and then
apply compressor oil to it when installing it.

Female-side piping connection is thin and easy to deform. Slowly insert the male-side piping
straight in axial direction.

Insert piping securely until a click is heard.

After piping connection is completed, pull male-side piping by hand to make sure that connection
does not come loose.

When recharging refrigerant, check for leaks.
NOTE:

When filling radiator with coolant, refer to CO-11, "Changing Engine Coolant" (VQ35DE) or CO-40,
"Changing Engine Coolant" (VK45DE).

Recharge the refrigerant.
Heater & cooling unit assembly mounting bolt
: 6.9 N·m (0.7 kg-m, 61 in-lb)
Instrument stay mounting nut and bolt
: 12 N·m (1.25 kg-m, 9 ft-lb)

HEATER & COOLING UNIT ASSEMBLY
ATC-137
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AT C
Revision: 2007 April2007 M35/M45
Disassembly and AssemblyNJS000HG
1. Aspirator 2. Aspirator hose 3. Front heater duct (left)
4. Foot duct (left) 5. Ventilator door (left) 6. Ventilator door (right)
7. Foot duct (right) 8. Main link sub (right) 9. Ventilator door lever (right)
10. Ventilator door link (right) 11. Main link (right) 12. Mode door motor (passenger side)
13. Max. cool door link (right) 14. Air mix door motor (passenger side) 15. Intake sensor
16. Intake sensor bracket 17. O-ring 18. Low-pressure pipe 1
19. High-pressure pipe 2 20. Expansion valve 21. Cooler pipe grommet
22. Insulator 23. Evaporator cover adapter 24. Air mix door (Slide door)
25. Clip 26. Heater & cooling unit case (left) 27. Heater pipe grommet
28. Heater core 29. Upper ventilator door motor 30. Air mix door motor (driver side)
31. Mode door motor (driver side) 32. Main link (left) 33. Main link sub (left)
34. Ventilator door lever (left) 35. Center case 36. Max. cool door lever (right)
SJIA1772E

ATC-138
HEATER & COOLING UNIT ASSEMBLY
Revision: 2007 April2007 M35/M45
37. Evaporator cover 38. Evaporator 39. Heater & cooling unit case (right)
40. Upper ventilator door 41. Heater pipe cover 42. Upper ventilator door rod
43. Upper ventilator door lever 44. Defroster door link 45. Ventilator door link (left)
46. Max. cool door lever (left) 47. Max. cool door (left) 48. Max. cool door (right)
49. Defroster door (right) 50. Defroster door (left) 51. Max. cool door link (left)
52. Defroster door lever
: N·m (kg-m, in-lb)
: Always replace after every disassembly.

MODE DOOR MOTOR
ATC-139
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AT C
Revision: 2007 April2007 M35/M45
MODE DOOR MOTORPFP:27731
Removal and InstallationNJS000HH
REMOVAL
Driver Side
1. Remove heater & cooling unit assembly. Refer to ATC-134, "HEATER & COOLING UNIT ASSEMBLY" .
2. Remove mounting screws, and then remove mode door motor.
3. Disconnect mode door motor connector.
Passenger Side
1. Remove blower unit. Refer to ATC-129, "BLOWER UNIT" .
2. Remove mounting screws, and then remove mode door motor.
3. Disconnect mode door motor connector.
INSTALLATION
Installation is basically the reverse order of removal.
RJIA4124E
RJIA4123E