2006 INFINITI M35 Motor

ATC-102
TROUBLE DIAGNOSIS
Revision: 2006 January2006 M35/M45
*1ATC-157, "Check Disc to Pulley
Clearance"
*2ATC-89, "Blower Motor Circuit"*3EM-15, "Checking Drive Belts"
(VQ35DE) or EM-174, "
Checking
Drive Belts" (VK45DE)
SJIA1642E

ATC-106
TROUBLE DIAGNOSIS
Revision: 2006 January2006 M35/M45
High-pressure Side is Too Low and Low-pressure Side is Too High
Both High- and Low-pressure Sides are Too Low
Gauge indication Refrigerant cycle Probable cause Corrective action
High-pressure side is too low and
low-pressure side is too high.High- and low-pressure sides
become equal soon after com-
pressor operation stops.Compressor pressure opera-
tion is improper.
Damaged inside compressor
packings.Replace compressor.
No temperature difference
between high- and low-pres-
sure sides.Compressor pressure opera-
tion is improper.
Damaged inside compressor
packings.Replace compressor.AC356A
Gauge indication Refrigerant cycle Probable cause Corrective action
Both high- and low-pressure sides
are too low.
There is a big temperature
difference between liquid
tank outlet and inlet. Outlet
temperature is extremely
low.
Liquid tank inlet and expan-
sion valve are frosted.Liquid tank inside is slightly
clogged.
Replace liquid tank.
Check lubricant for contami-
nation.
Temperature of expansion
valve inlet is extremely low
as compared with areas
near liquid tank.
Expansion valve inlet may
be frosted.
Temperature difference
occurs somewhere in high-
pressure side.High-pressure pipe located
between liquid tank and
expansion valve is clogged.
Check and repair malfunc-
tioning parts.
Check lubricant for contami-
nation.
Expansion valve and liquid
tank are warm or slightly cool
when touched.Low refrigerant charge.
Leaking fittings or compo-
nents.Check refrigerant for leaks.
Refer to ATC-170, "Checking
for Refrigerant Leaks" .
There is a big temperature dif-
ference between expansion
valve inlet and outlet while the
valve itself is frosted.Expansion valve closes a little
compared with the specifica-
tion.
1. Improper expansion valve
adjustment.
2. Malfunctioning expansion
valve.
3. Outlet and inlet may be
clogged.
Remove foreign particles by
using compressed air.
Replace expansion valve.
Check lubricant for contami-
nation.
An area of the low-pressure
pipe is colder than areas near
the evaporator outlet.Low-pressure pipe is clogged
or crushed.
Check and repair malfunc-
tioning parts.
Check lubricant for contami-
nation.
Air flow volume is not enough
or is too low.Evaporator is frozen.
Check intake sensor circuit.
Refer to ATC-122, "
Intake
Sensor Circuit" .
Replace compressor.
Repair evaporator fins.
Replace evaporator.
Refer to AT C - 8 9 , "Blower
Motor Circuit" .
AC353A

TROUBLE DIAGNOSIS
ATC-109
C
D
E
F
G
H
I
K
L
MA
B
AT C
Revision: 2006 January2006 M35/M45
Insufficient HeatingNJS000GW
SYMPTOM: Insufficient heating
INSPECTION FLOW
*1ATC-64, "Operational Check"*2ATC-83, "Air Mix Door Motor Circuit"*3AT C - 5 6 , "FUNCTION CONFIRMA-
TION PROCEDURE", see No. 2 to
6.
*4ATC-56, "
FUNCTION CONFIRMA-
TION PROCEDURE", see No. 13.*5ATC-70, "
LAN System Circuit"*6AT C - 8 9 , "Blower Motor Circuit"
*7EC-226, "DTC P0117, P0118 ECT
SENSOR" (VQ35DE) or EC-948,
"DTC P0117, P0118 ECT SEN-
SOR" (VK45DE)*8CO-11, "
Changing Engine Coolant"
(VQ35DE) or CO-40, "
Changing
Engine Coolant" (VK45DE)*9CO-16, "
Checking Radiator Cap"
(VQ35DE) or CO-45, "
Checking
Radiator Cap" (VK45DE)
RJIA4084E

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

BLOWER UNIT
ATC-131
C
D
E
F
G
H
I
K
L
MA
B
AT C
Revision: 2006 January2006 M35/M45
Disassembly and AssemblyNJS000HB
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
RJIA4113E

ATC-132
BLOWER MOTOR
Revision: 2006 January2006 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

INTAKE DOOR MOTOR
ATC-133
C
D
E
F
G
H
I
K
L
MA
B
AT C
Revision: 2006 January2006 M35/M45
INTAKE DOOR MOTORPFP:27730
Removal and InstallationNJS000HD
REMOVAL
1. Remove ECM with bracket attached. Refer to ATC-130, "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

ATC-138
HEATER & COOLING UNIT ASSEMBLY
Revision: 2006 January2006 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. Low-pressure pipe 1 18. High-pressure pipe 2
19. Expansion valve 20. Cooler pipe grommet 21. Insulator
22. Evaporator cover adapter 23. Air mix door (Slide door) 24. Clip
25. Heater & cooling unit case (left) 26. Heater pipe grommet 27. Heater core
28. Upper ventilator door motor 29. Air mix door motor (driver side) 30. Mode door motor (driver side)
31. Main link (left) 32. Main link sub (left) 33. Ventilator door lever (left)
34. Center case 35. Max. cool door lever (right) 36. Evaporator cover
RJIA4122E