clutch INFINITI M35 2007 Factory Service Manual

ATC-66
TROUBLE DIAGNOSIS
Revision: 2007 April2007 M35/M45
CHECKING DISCHARGE AIR (UPPER VENT SWITCH)
1. Press temperature control (UP) switch (driver side) until 32°C (90°F) is displayed.
2. Press fan (UP:+) switch until Max. speed.
3. Set MODE switch (driver side) to VENT position.
4. Press UPPER VENT switch. AUTO indicator should illuminate.
5. Press temperature control (DOWN) switch (driver side) until 18°C (60°F) is displayed.
6. Confirm that discharger air come out.
7. Press UPPER VENT switch again. AUTO indicator should OFF.
If NG, go to trouble diagnosis procedure for AT C - 7 9 , "
Upper Ventilator Door Motor Circuit" .
If OK, continue the check.
CHECKING INTAKE AIR
1. Press intake switch. Recirculation indicator should illuminate.
2. Press intake switch again. Fresh indicator should illuminate.
3. Listen for intake door position change. (Slight change of blower sound can be heard.)
If NG, go to trouble diagnosis procedure for AT C - 8 5 , "
Intake Door Motor Circuit" .
If OK, continue the check.
NOTE:
Confirm that the compressor clutch is engaged (sound or visual inspection) and intake door position is at
FRESH when the D/F or DEF is selected.
CHECKING TEMPERATURE DECREASE
1. Press temperature control (DOWN) switch (driver side) until 18°C (60°F) is displayed.
2. Check for cold air at discharge air outlets.
If NG, go to trouble diagnosis procedure for AT C - 9 8 , "
Insufficient Cooling" .
If OK, continue the check.
CHECKING TEMPERATURE INCREASE
1. Press temperature control (UP) switch (driver side) until 32°C (90°F) is displayed.
2. Check for hot air at discharge air outlets.
If NG, go to trouble diagnosis procedure for ATC-108, "
Insufficient Heating" .
If OK, continue the check.
CHECKING A/C SWITCH
1. Press AUTO switch and A/C switch.
2. A/C switch indicator will turn ON.

Confirm that the compressor clutch engages (sound or visual inspection).
If NG, go to trouble diagnosis procedure for AT C - 9 3 , "
Magnet Clutch Circuit" .
If OK, continue the check.
CHECKING AUTO MODE
1. Press AUTO switch and A/C switch.
2. Display should indicate AUTO.

Confirm that discharge air and blower speed will depend on ambient, in-vehicle, and set temperatures.
If NG, go to trouble diagnosis procedure for AT C - 6 7 , "
Power Supply and Ground Circuit for Auto Amp." , then
if necessary, trouble diagnosis procedure for AT C - 9 3 , "
Magnet Clutch Circuit" .
If all operational checks are OK (symptom cannot be duplicated), go to Incident Simulation Tests in GI-28,
"How to Perform Efficient Diagnosis for an Electrical Incident" and perform tests as outlined to simulate driv-
ing conditions environment. If symptom appears, refer to AT C - 4 1 , "
SYMPTOM TABLE" and perform applica-
ble trouble diagnosis procedures.

TROUBLE DIAGNOSIS
ATC-93
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AT C
Revision: 2007 April2007 M35/M45
Magnet Clutch CircuitNJS000GU
SYMPTOM: Magnet clutch does not engage.
INSPECTION FLOW
*1ATC-121, "Intake Sensor Circuit"*2ATC-112, "Ambient Sensor Circuit"*3AT C - 5 7 , "FUNCTION CONFIRMA-
TION PROCEDURE", see No. 13.
*4AT C - 9 4 , "
DIAGNOSIS PROCE-
DURE FOR MAGNET CLUTCH"
*5ATC-104, "TROUBLE DIAGNOSIS
FOR UNUSUAL PRESSURE"
*6AT C - 6 5 , "Operational Check"
*7AT C - 5 7 , "FUNCTION CONFIRMA-
TION PROCEDURE", see No. 2 to 6.*8ATC-41, "
SYMPTOM TABLE"
RJIA4077E

ATC-94
TROUBLE DIAGNOSIS
Revision: 2007 April2007 M35/M45
SYSTEM DESCRIPTION
Unified meter and A/C amp. controls compressor operation by ambient temperature, intake air temperature
and signal from ECM.
Low Temperature Protection Control
Unified meter and A/C amp. will turn compressor ON or OFF as determined by a signal detected by ambient
sensor and intake sensor.
When ambient temperature is higher than −2°C (28°F), the compres-
sor turns ON. The compressor turns OFF when ambient temperature
is lower than −5°C (23°F).
When intake air temperature is higher than 1°C (34°F), the compres-
sor turns ON. The compressor turns OFF when intake air tempera-
ture is lower than −5°C (23°F).
DIAGNOSIS PROCEDURE FOR MAGNET CLUTCH
SYMPTOM: Magnet clutch does not engage when A/C switch is ON.
RHA094GB
SJIA0267E
RJIA4078E

TROUBLE DIAGNOSIS
ATC-95
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Revision: 2007 April2007 M35/M45
1. CHECK AMBIENT SENSOR AND INTAKE SENSOR CIRCUIT
Check ambient sensor and intake sensor. Refer to AT C - 5 7 , "
FUNCTION CONFIRMATION PROCEDURE" ,
see No. 9 and 11.
OK or NG
OK >> GO TO 2.
NG >>

Malfunctioning ambient sensor: Refer to AT C - 11 2 , "Ambient Sensor Circuit" .

Malfunctioning intake sensor: Refer to ATC-121, "Intake Sensor Circuit" .
2. PERFORM AUTO ACTIVE TEST
Refer to PG-23, "
Auto Active Test" .
Does the magnet clutch operate?
YES >>
WITH CONSULT-II: GO TO 5.

WITHOUT CONSULT-II: GO TO 6.
NO >> Check 10A fuse (No. 79, located in IPDM E/R). Refer to PG-28, "
IPDM E/R Terminal Arrange-
ment" , and GO TO 3.
3. CHECK CIRCUIT CONTINUITY BETWEEN IPDM E/R AND COMPRESSOR
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R connector and compressor connector.
3. Check continuity between IPDM E/R harness connector E8 ter-
minal 34 and compressor harness connector F24 terminal 1.
OK or NG
OK >> GO TO 4.
NG >> Repair harness or connector.
4. CHECK MAGNET CLUTCH CIRCUIT
Check for operation sound when applying battery voltage direct cur-
rent to terminal.
OK or NG
OK >> 1. Replace IPDM E/R.
2. Go to self-diagnosis procedure AT C - 5 7 , "
FUNCTION
CONFIRMATION PROCEDURE" and perform self-
diagnosis STEP-4. Confirm that magnet clutch opera-
tion normal.
NG >> 1. Replace compressor.
2. Go to self-diagnosis procedure AT C - 5 7 , "
FUNCTION
CONFIRMATION PROCEDURE" and perform self-
diagnosis STEP-4. Confirm that magnet clutch operation normal.
34 – 1 : Continuity should exist.
RJIA4079E
RJIA2005E

TROUBLE DIAGNOSIS
ATC-99
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Revision: 2007 April2007 M35/M45
*1ATC-57, "FUNCTION CONFIRMA-
TION PROCEDURE", see No. 2 to 6.*2ATC-82, "
Air Mix Door Motor Circuit"*3ATC-102, "Test Reading
(VQ35DE)" or ATC-103, "Test
Reading (VK45DE)"
*4ATC-63, "AUXILIARY MECHA-
NISM: TEMPERATURE SETTING
TRIMMER"
*5ATC-57, "FUNCTION CONFIRMA-
TION PROCEDURE", see No. 13.*6ATC-71, "
LAN System Circuit"
*7ATC-88, "Blower Motor Circuit"*8ATC-93, "Magnet Clutch Circuit"*9ATC-100, "PERFORMANCE TEST
DIAGNOSIS"
*10ATC-65, "Operational Check"*11AT C - 7 , "CONTAMINATED REFRIG-
ERANT"
*12EM-16, "Checking Drive Belts"
(VQ35DE) or EM-174, "
Checking
Drive Belts" (VK45DE)
*13EC-499, "
SYSTEM DESCRIPTION"
(VQ35DE) or EC-1214, "
SYSTEM
DESCRIPTION" (VK45DE)

ATC-154
REFRIGERANT LINES
Revision: 2007 April2007 M35/M45
4. Remove mounting nuts from low-pressure flexible hose and
high-pressure flexible hose.
CAUTION:
Cap or wrap the joint of low-pressure flexible hose and
high-pressure flexible hose with suitable material such as
vinyl tape to avoid the entry of air.
5. Disconnect compressor (magnet clutch and ECV) connectors.
6. Remove A/C compressor belt. Refer to EM-16, "
DRIVE BELTS" .
7. Remove mounting bolts, and then remove damper bracket.
8. Remove mounting bolts from compressor, using power tools.
9. Remove compressor downward of the vehicle.
VQ35DE (For serial number: From JNKAY01E27M 308991, JNKAY01F07M 458011)
1. Use a refrigerant collecting equipment (for HFC-134a) to discharge the refrigerant.
2. Remove air cleaner case and air duct. Refer to EM-19, "
AIR CLEANER AND AIR DUCT" .
3. Remove engine undercover, using power tools.
RJIA4155E
RJIA4157E
RJIA4158E
SJIA1983E

REFRIGERANT LINES
ATC-155
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Revision: 2007 April2007 M35/M45
4. Remove mounting nuts from low-pressure flexible hose and
high-pressure flexible hose.
CAUTION:
Cap or wrap the joint of low-pressure flexible hose and
high-pressure flexible hose with suitable material such as
vinyl tape to avoid the entry of air.
5. Disconnect compressor (magnet clutch and ECV) connectors.
6. Remove A/C compressor belt. Refer to EM-16, "
DRIVE BELTS" .
7. Remove mounting bolts from compressor, using power tools.
8. Remove compressor downward of the vehicle.
VK45DE
1. Use a refrigerant collecting equipment (for HFC-134a) to discharge the refrigerant.
2. Remove air cleaner case and air duct. Refer to EM-177, "
AIR CLEANER AND AIR DUCT" .
3. Remove engine undercover, using power tools.
4. Remove mounting nut between low-pressure flexible hose and low-pressure pipe. Refer to ATC-157,
"Removal and Installation of Low-pressure Flexible Hose and Pipe" .
RJIA4155E
RJIA4158E
SJIA1791E

ATC-156
REFRIGERANT LINES
Revision: 2007 April2007 M35/M45
5. Remove mounting nuts from low-pressure pipe and high-pres-
sure flexible hose.
CAUTION:
Cap or wrap the joint of low-pressure pipe and high-pres-
sure flexible hose with suitable material such as vinyl tape
to avoid the entry of air.
6. Remove A/C compressor belt. Refer to EM-174, "
DRIVE BELTS" .
7. Disconnect compressor (magnet clutch and ECV) connectors.
8. Remove mounting bolts from compressor, using power tools.
9. Remove compressor downward of the vehicle.
INSTALLATION
Installation is basically the reverse order of removal.
CAUTION:

Replace O-rings of low-pressure flexible hose, low-pressure pipe (VK45DE) and high-pressure
flexible hose with new ones, and then apply compressor oil to it when installing it.

When recharging refrigerant, check for leaks.
Check Disc to Pulley ClearanceNJS000I7
Check clearance around entire periphery of clutch disc.
If specified clearance is not obtained, replace compressor.
RJIA4154E
RJIA4156E
Disc to pulley
clearance: 0.3 - 0.6 mm (0.012 - 0.024 in)
RHA087E

SERVICE DATA AND SPECIFICATIONS (SDS)
ATC-173
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Revision: 2007 April2007 M35/M45
SERVICE DATA AND SPECIFICATIONS (SDS)PFP:00030
CompressorNJS000I2
LubricantNJS000I3
RefrigerantNJS000I4
Engine Idling SpeedNJS000I5
Refer to EC-716, "Idle Speed and Ignition Timing" (VQ35DE) or EC-1440, "Idle Speed and Ignition Timing"
(VK45DE).
Belt TensionNJS000I6
Refer to EM-16, "DRIVE BELTS" (VQ35DE) or EM-174, "DRIVE BELTS" (VK45DE).
ModelVALEO THERMAL SYSTEMS JAPAN make
DCS-17EC
TypeVariable displacement swash plate
Displacement
cm
3 (cu in)/revMax. 171 (10.4)
Cylinder bore × stroke (Max.)
mm (in)32 (1.26) × 30.5 (1.20)
Direction of rotationClockwise (viewed from clutch)
Drive beltPoly V
ModelVALEO THERNAL SYSTEMS JAPAN make
DCS-17EC
NameNissan A/C System Oil Type S (DH-PS)
Capacity
m (US fl oz, lmp fl oz)Total in system 150 (5.03, 5.3)
Compressor (Service part) charg-
ing amount150 (5.03, 5.3)
Ty p eHFC-134a (R-134a)
Capacity
kg (lb)0.55 (1.21)

BL-10
SQUEAK AND RATTLE TROUBLE DIAGNOSIS
Revision: 2007 April2007 M35/M45
DUPLICATE THE NOISE AND TEST DRIVE
If possible, drive the vehicle with the customer until the noise is duplicated. Note any additional information on
the Diagnostic Worksheet regarding the conditions or location of the noise. This information can be used to
duplicate the same conditions when you confirm the repair.
If the noise can be duplicated easily during the test drive, to help identify the source of the noise, try to dupli-
cate the noise with the vehicle stopped by doing one or all of the following:
1) Close a door.
2) Tap or push/pull around the area where the noise appears to be coming from.
3) Rev the engine.
4) Use a floor jack to recreate vehicle “twist”.
5) At idle, apply engine load (electrical load, half-clutch on M/T model, drive position on A/T model).
6) Raise the vehicle on a hoist and hit a tire with a rubber hammer.

Drive the vehicle and attempt to duplicate the conditions the customer states exist when the noise occurs.

If it is difficult to duplicate the noise, drive the vehicle slowly on an undulating or rough road to stress the
vehicle body.
CHECK RELATED SERVICE BULLETINS
After verifying the customer concern or symptom, check ASIST for Technical Service Bulletins (TSBs) related
to that concern or symptom.
If a TSB relates to the symptom, follow the procedure to repair the noise.
LOCATE THE NOISE AND IDENTIFY THE ROOT CAUSE
1. Narrow down the noise to a general area. To help pinpoint the source of the noise, use a listening tool
(Chassis Ear: J-39570, Engine Ear and mechanics stethoscope).
2. Narrow down the noise to a more specific area and identify the cause of the noise by:

removing the components in the area that you suspect the noise is coming from.
Do not use too much force when removing clips and fasteners, otherwise clips and fastener can be broken
or lost during the repair, resulting in the creation of new noise.

tapping or pushing/pulling the component that you suspect is causing the noise.
Do not tap or push/pull the component with excessive force, otherwise the noise will be eliminated only
temporarily.

feeling for a vibration with your hand by touching the component(s) that you suspect is (are) causing the
noise.

placing a piece of paper between components that you suspect are causing the noise.

looking for loose components and contact marks.
Refer to BL-11, "
Generic Squeak and Rattle Troubleshooting" .
REPAIR THE CAUSE

If the cause is a loose component, tighten the component securely.

If the cause is insufficient clearance between components:
–separate components by repositioning or loosening and retightening the component, if possible.
–insulate components with a suitable insulator such as urethane pads, foam blocks, felt cloth tape or ure-
thane tape. A Nissan Squeak and Rattle Kit (J-43980) is available through your authorized Nissan Parts
Department.
CAUTION:
Do not use excessive force as many components are constructed of plastic and may be damaged.
NOTE:
Always check with the Parts Department for the latest parts information.
The following materials are contained in the Nissan Squeak and Rattle Kit (J-43980). Each item can be
ordered separately as needed.
URETHANE PADS [1.5 mm (0.059 in) thick]
Insulates connectors, harness, etc.
76268-9E005: 100×135 mm (3.94×5.31 in)/76884-71L01: 60×85 mm (2.36×3.35 in)/76884-
71L02: 15×25 mm (0.59×0.98 in)
INSULATOR (Foam blocks)
Insulates components from contact. Can be used to fill space behind a panel.
73982-9E000: 45 mm (1.77 in) thick, 50×50 mm (1.97×1.97 in)/73982-
50Y00: 10 mm (0.39 in) thick, 50×50 mm (1.97×1.97 in)