2006 INFINITI M35 ECU

ATC-130
BLOWER UNIT
Revision: 2006 January2006 M35/M45
BLOWER UNITPFP:27200
Removal and InstallationNJS000HA
REMOVAL
1. Remove instrument passenger lower cover and glove box cover. Refer to IP-10, "INSTRUMENT PANEL
ASSEMBLY" .
2. Remove BCM. Refer to BCS-17, "
Removal and Installation of BCM" .
3. Remove mounting nuts, and then remove ECM with bracket
attached.
4. Disconnect intake door motor connector and blower fan motor
connector.
5. Remove mounting bolt and screw from blower unit.
CAUTION:
Move blower unit rightward, and remove locating pin (1
part) and joint. Then remove blower unit downward.
6. Remove blower unit.
INSTALLATION
Installation is basically the reverse order of removal.
CAUTION:
Make sure locating pin (1 part) and joint are securely inserted.
R J I A 4 111 E
RJIA4112E

HEATER & COOLING UNIT ASSEMBLY
ATC-137
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Revision: 2006 January2006 M35/M45
CAUTION:
Replace O-rings of A/C piping 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 Nꞏm (0.7 kg-m, 61 in-lb)
Instrument stay mounting nut and bolt
: 12 Nꞏm (1.25 kg-m, 9 ft-lb)

REFRIGERANT LINES
ATC-159
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Revision: 2006 January2006 M35/M45
CAUTION:
Replace O-rings of low-pressure flexible hose and low-pressure pipe (VK45DE) 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.
Removal and Installation of High-Pressure Flexible HoseNJS000HQ
REMOVAL
1. Use a refrigerant collecting equipment (for HFC-134a) to discharge the refrigerant.
2. Remove engine cover. Refer to EM-14, "
ENGINE ROOM COVER" (VQ35DE) or EM-173, "ENGINE
ROOM COVER" (VK45DE).
3. Remove air cleaner case and air duct. Refer to EM-17, "
AIR CLEANER AND AIR DUCT" (VQ35DE) or
EM-177, "
AIR CLEANER AND AIR DUCT" (VK45DE).
4. Remove mounting bolt from high-pressure flexible hose bracket.
5. Disconnect one-touch joint between high-pressure flexible hose
and condenser.
a. Set a disconnector (SST: 9253089912) on A/C piping.
b. Slide a disconnector backward until it clicks.
c. Slide A/C piping backward and disconnect it.
CAUTION:
Cap or wrap the joint of the pipe with suitable material such
as vinyl tape to avoid the entry of air.
6. Remove low-pressure pipe (VK45DE). Refer to ATC-158, "
Removal and Installation of Low-Pressure
Flexible Hose and Pipe" .
7. Remove mounting nut from high-pressure flexible hose, and
then remove high-pressure flexible hose.
CAUTION:
Cap or wrap the joint of the pipe with suitable material such
as vinyl tape to avoid the entry of air.Low-pressure flexible hose bracket mounting bolt
: 4.2 Nꞏm (0.43 kg-m, 37 in-lb)
RJIA4163E
RJIA4164E
RJIA4166E

ATC-160
REFRIGERANT LINES
Revision: 2006 January2006 M35/M45
INSTALLATION
Installation is basically the reverse order of removal.
CAUTION:
Replace O-rings of high-pressure flexible house 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.
Removal and Installation of High-Pressure Pipe 1 (Engine Compartment)NJS000HR
REMOVAL
1. Remove low-pressure flexible hose. Refer to ATC-158, "Removal and Installation of Low-Pressure Flexi-
ble Hose and Pipe" .
2. Remove mounting bolt from high-pressure flexible hose bracket.
3. Remove high-pressure pipe 1 from vehicle clips.
4. Disconnect one-touch joints of high-pressure pipe 1.
a. Set a disconnector (SST: 9253089908) on A/C piping.
RJIA4165E
High-pressure flexible hose bracket mounting bolt
: 4.2 Nꞏm (0.43 kg-m, 37 in-lb)
RJIA4163E
RJIA4167E

REFRIGERANT LINES
ATC-161
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Revision: 2006 January2006 M35/M45
b. Slide a disconnector toward (or upward) vehicle front until it clicks.
c. Slide A/C piping toward (or upward) vehicle front and disconnect it.
CAUTION:
Cap or wrap the joint of the pipe with suitable material such as vinyl tape to avoid the entry of air.
5. Remove high-pressure pipe 1.
INSTALLATION
Installation is basically the reverse order of removal.
CAUTION:
Replace O-rings of 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.
RJIA4168E
High-pressure flexible hose bracket mounting bolt
: 4.2 Nꞏm (0.43 kg-m, 37 in-lb)

REFRIGERANT LINES
ATC-163
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Revision: 2006 January2006 M35/M45
13. Remove mounting bolt, and then remove low-pressure pipe 1
and high-pressure pipe 2.
CAUTION:
Cap or wrap the joint of the pipe with suitable material such
as vinyl tape to avoid the entry of air.
INSTALLATION
Installation is basically the reverse order of removal.
CAUTION:
Replace O-rings of A/C piping 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.
RJIA4171E
Low-pressure flexible hose bracket mounting bolt
: 4.2 Nꞏm (0.43 kg-m, 37 in-lb)

REFRIGERANT LINES
ATC-165
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Revision: 2006 January2006 M35/M45
INSTALLATION
Install liquid tank, and then install liquid tank bracket on condenser.
CAUTION:
Make sure liquid tank bracket is securely installed at protru-
sion of condenser. (Make sure liquid tank bracket does not
move to a position below center of liquid tank.)
Replace O-rings of A/C piping with new ones, and then
apply compressor oil to it when installing it.
When recharging refrigerant, check for leaks.
Removal and Installation of CondenserNJS000HU
REMOVAL
1. Use a refrigerant collecting equipment (for HFC-134a) to discharge the refrigerant.
2. Remove engine cover. Refer to EM-14, "
ENGINE ROOM COVER" (VQ35DE) or EM-173, "ENGINE
ROOM COVER" (VK45DE).
3. Remove air cleaner case, air hose and air duct. Refer to EM-17, "
AIR CLEANER AND AIR DUCT"
(VQ35DE) or EM-177, "AIR CLEANER AND AIR DUCT" (VK45DE).
4. Remove engine under cover, using power tools.
5. Drain engine coolant. Refer to CO-11, "
Changing Engine Coolant" (VQ35DE) or CO-40, "Changing
Engine Coolant" (VK45DE).
6. Remove radiator fan shroud with cooling fan after (VK45DE). Refer to CO-51, "
COOLING FAN" .
7. Remove mounting clips and bolts, and then remove bracket.
8. Remove radiator upper mount, remove radiator and condenser
to the engine side.
9. Remove mounting bolt from high-pressure flexible hose bracket.
10. Remove high-pressure pipe1 from vehicle clip.
RJIA1441E
RJIA4173E
RJIA4174E

REFRIGERANT LINES
ATC-167
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Revision: 2006 January2006 M35/M45
17. Pull condenser forward at an angle. Remove condenser from
radiator.
CAUTION:
Be careful not to damage the core surface of condenser and
radiator.
INSTALLATION
Installation is basically the reverse order of removal.
CAUTION:
Replace O-rings of A/C piping 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.
Removal and Installation of Refrigerant Pressure SensorNJS000HV
REMOVAL
1. Remove liquid tank. Refer to ATC-164, "Removal and Installation of Liquid Tank" .
2. Using a vice, secure liquid tank, and remove refrigerant pres-
sure sensor.
CAUTION:
Be careful not to damage liquid tank.
INSTALLATION
Installation is basically the reverse order of removal.
CAUTION:
Apply compressor oil to O-ring of refrigerant pressure sensor when installing it.
When recharging refrigerant, check for leaks.
RJIA4179E
RJIA2148E