engine NISSAN LATIO 2007 Service Repair Manual

MT-16
TRANSAXLE ASSEMBLY
Revision: June 20062007 Versa

If transaxle is removed from the vehicle, always replace CSC. Refer to CL-11, "Removal and Installation" .

When installing the transaxle assembly to the engine, install the
bolts as shown.
CAUTION:
When installing transaxle assembly, be careful not to bring
transaxle input shaft into contact with clutch cover.
A: M/T to engine
B: Engine to M/T

Bleed the air from the clutch hydraulic system. Refer to CL-8, "Air Bleeding Procedure" .

After installation, check oil level, and check for leaks and loose mechanisms. Refer to MT-9, "Checking M/
T Oil" .
Bolt No. 1 2
Quantity 3 6
Bolt length “ ” mm (in)60 (2.36) 50 (1.97)
Tightening torque
N·m (kg-m, ft-lb)62.0 (6.3, 46)
PCIB1786E

SERVICE DATA AND SPECIFICATIONS (SDS)
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SERVICE DATA AND SPECIFICATIONS (SDS)PFP:00030
General SpecificationsUCS006KD
Engine typeMR18DE
Transaxle modelRS6F94R
Number of speeds6
Synchromesh typeWarner
Shift pattern
Gear ratio 1st3.727
2nd2.105
3rd1.452
4th1.171
5th0.971
6th0.811
Reverse 3.687
Final gear 3.933
Number of teeth Input gear 1st 11
2nd 19
3rd 31
4th 35
5th 35
6th 37
Reverse 11
Main gear 1st 41
2nd 40
3rd 45
4th 41
5th 34
6th 30
Reverse 42
Reverse idler gear Input/Output 28/29
Final gear Final gear/Pinion 59/15
Side gear/Pinion
mate gear21/18
Oil capacity
(US pt, Imp pt)Approx. 2.0 (4-1/4, 3-1/2)
Remarks Reverse synchronizer Installed
Triple-cone synchronizer 1st and 2nd
PCIB1769E

MTC-1
MANUAL AIR CONDITIONER
J AIR CONDITIONER
CONTENTS
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SECTION MTC
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B
MTC
Revision: June 20062007 Versa PRECAUTIONS .......................................................... 4
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” .................................................................. 4
Precautions for Procedures without Cowl Top Cover ..... 4
Precautions for Working with HFC-134a (R-134a) ..... 4
General Refrigerant Precautions .............................. 5
Oil Precautions ......................................................... 5
Precautions for Refrigerant Connection ................... 5
FEATURES OF NEW TYPE REFRIGERANT
CONNECTION ...................................................... 5
O-RING AND REFRIGERANT CONNECTION ..... 6
Precautions for Servicing Compressor ..................... 8
Precautions for Service Equipment .......................... 9
RECOVERY/RECYCLING EQUIPMENT .............. 9
ELECTRONIC LEAK DETECTOR ........................ 9
VACUUM PUMP ................................................... 9
MANIFOLD GAUGE SET ...................................... 9
SERVICE HOSES ................................................. 9
SERVICE COUPLERS ........................................ 10
REFRIGERANT WEIGHT SCALE ...................... 10
CHARGING CYLINDER ...................................... 10
Precautions for Leak Detection Dye ....................... 10
IDENTIFICATION LABEL FOR VEHICLE ........... 10
PREPARATION ......................................................... 12
Special Service Tools ............................................. 12
HFC-134a (R-134a) Service Tools and Equipment ... 12
Commercial Service Tools ...................................... 15
REFRIGERATION SYSTEM ..................................... 16
Refrigerant Cycle ................................................... 16
REFRIGERANT FLOW ....................................... 16
FREEZE PROTECTION ..................................... 16
Refrigerant System Protection ............................... 16
REFRIGERANT PRESSURE SENSOR ............. 16
PRESSURE RELIEF VALVE ............................... 16
Component Layout ................................................. 17OIL ............................................................................. 18
Maintenance of Oil Quantity in Compressor ........... 18
OIL ....................................................................... 18
OIL RETURN OPERATION ................................. 18
OIL ADJUSTING PROCEDURE FOR COMPO-
NENTS REPLACEMENT EXCEPT COMPRES-
SOR ..................................................................... 19
OIL ADJUSTING PROCEDURE FOR COM-
PRESSOR REPLACEMENT ............................... 19
AIR CONDITIONER CONTROL ............................... 21
Control Operation ................................................... 21
BLOWER CONTROL DIAL ................................. 21
TEMPERATURE CONTROL DIAL ...................... 21
MODE DOOR CONTROL DIAL .......................... 21
INTAKE DOOR LEVER ....................................... 21
REAR WINDOW DEFOGGER SWITCH ............. 21
A/C SWITCH (IF EQUIPPED) ............................. 21
Discharge Air Flow ................................................. 22
System Description ................................................. 23
SWITCHES AND THEIR CONTROL FUNCTION ... 23
CAN Communication System Description .............. 23
TROUBLE DIAGNOSIS ............................................ 24
CONSULT-II Function (BCM) ................................. 24
CONSULT-II START PROCEDURE .................... 24
DATA MONITOR ................................................. 24
How to Perform Trouble Diagnosis for Quick and
Accurate Repair ...................................................... 24
WORK FLOW ...................................................... 24
SYMPTOM TABLE .............................................. 24
Component Parts and Harness Connector Location ... 25
ENGINE COMPARTMENT .................................. 25
PASSENGER COMPARTMENT ......................... 26
Schematic ............................................................... 27
Wiring Diagram — Heater — .................................. 28
WITHOUT A/C ..................................................... 28
Wiring Diagram — A/C,M — ................................... 29
Operational Check .................................................. 33
CHECKING BLOWER ......................................... 33
CHECKING DISCHARGE AIR ............................ 33
CHECKING RECIRCULATION ........................... 33

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Revision: June 20062007 Versa Dye Injection .......................................................... 92
Electronic Refrigerant Leak Detector ..................... 93
PRECAUTIONS FOR HANDLING LEAK
DETECTOR ........................................................ 93
CHECKING PROCEDURE ................................. 94
SERVICE DATA AND SPECIFICATIONS (SDS) ...... 96Compressor ............................................................ 96
Oil ........................................................................... 96
Refrigerant .............................................................. 96
Engine Idling Speed ............................................... 96
Belt Tension ............................................................ 96

MTC-8
PRECAUTIONS
Revision: June 20062007 Versa

After disconnecting tubes, immediately plug all openings to prevent entry of dirt and moisture.

When installing an air conditioner in the vehicle, connect the pipes as the final stage of the opera-
tion. Do not remove the seal caps of pipes and other components until just before required for
connection.

Allow components stored in cool areas to warm to working area temperature before removing seal
caps. This prevents condensation from forming inside A/C components.

Thoroughly remove moisture from the refrigeration system before charging the refrigerant.

Always replace used O-rings.

When connecting tube, apply oil to circle of the O-rings as shown. Be careful not to apply oil to
threaded portion.

O-ring must be closely attached to dented portion of tube.

When replacing the O-ring, be careful not to damage O-ring and tube.

Connect tube until you hear it click, then tighten the nut or bolt by hand until snug. Make sure that
the O-ring is installed to tube correctly.

After connecting line, perform leak test and make sure that there is no leakage from connections.
When the refrigerant leaking point is found, disconnect that line and replace the O-ring. Then
tighten connections of seal seat to the specified torque.
Precautions for Servicing CompressorEJS00570

Plug all openings to prevent moisture and foreign matter from entering.

When the compressor is removed, store it in the same position as it is when mounted on the car.

When replacing or repairing compressor, follow “Maintenance of Oil Quantity in Compressor”
exactly. Refer to MTC-18, "
Maintenance of Oil Quantity in Compressor" .

Keep friction surfaces between clutch and pulley clean. If the surface is contaminated, with oil,
wipe it off by using a clean waste cloth moistened with thinner.

After compressor service operation, turn the compressor shaft by hand more than five turns in
both directions. This will equally distribute oil inside the compressor. After the compressor is
installed, let the engine idle and operate the compressor for one hour.

After replacing the compressor magnet clutch, apply voltage to the new one and check for usual
operation.TYPE 1 Compressor (CR-10) : NISSAN A/C System Oil Type R
TYPE 2 Compressor (CSV511) : NISSAN A/C System Oil Type S
RHA861F

MTC-10
PRECAUTIONS
Revision: June 20062007 Versa
SERVICE COUPLERS
Never attempt to connect HFC-134a (R-134a) service couplers to a
CFC-12 (R-12) A/C system. The HFC-134a (R-134a) couplers will
not properly connect to the CFC-12 (R-12) system. However, if an
improper connection is attempted, discharging and contamination
may occur.
REFRIGERANT WEIGHT SCALE
Verify that no refrigerant other than HFC-134a (R-134a) and speci-
fied oils have been used with the scale. If the scale controls refriger-
ant flow electronically, the hose fitting must be 1/2″-16 ACME.
CHARGING CYLINDER
Using a charging cylinder is not recommended. Refrigerant may be vented into air from cylinder’s top valve
when filling the cylinder with refrigerant. Also, the accuracy of the cylinder is generally less than that of an
electronic scale or of quality recycle/recharge equipment.
Precautions for Leak Detection DyeEJS00572

The A/C system contains a fluorescent leak detection dye used for locating refrigerant leaks. An ultraviolet
(UV) lamp is required to illuminate the dye when inspecting for leaks.

Always wear fluorescence enhancing UV safety goggles to protect your eyes and enhance the visibility of
the fluorescent dye.

The fluorescent dye leak detector is not a replacement for an electronic refrigerant leak detector. The fluo-
rescent dye leak detector should be used in conjunction with an electronic refrigerant leak detector to pin-
point refrigerant leaks.

For your safety and your customer’s satisfaction, read and follow all manufacture’s operating instructions
and precautions prior to performing the work.

A compressor shaft seal should not be repaired because of dye seepage. The compressor shaft seal
should only be repaired after confirming the leak with an electronic refrigerant leak detector.

Always remove any remaining dye from the leak area after repairs are complete to avoid a misdiagnosis
during a future service.

Do not allow dye to come into contact with painted body panels or interior components. If dye is spilled,
clean immediately with the approved dye cleaner. Fluorescent dye left on a surface for an extended period
of time cannot be removed.

Do not spray the fluorescent dye cleaning agent on hot surfaces (engine exhaust manifold, etc.).

Do not use more than one refrigerant dye bottle (1/4 ounce /7.4 cc) per A/C system.

Leak detection dyes for HFC-134a (R-134a) and CFC-12 (R-12) A/C systems are different. Do not use
HFC-134a (R-134a) leak detection dye in CFC-12 (R-12) A/C system or CFC-12 (R-12) leak detector dye
in HFC-134a (R-134a) A/C system or A/C system damage may result.

The fluorescent properties of the dye will remain for over three (3) years unless a compressor malfunction
occurs.
IDENTIFICATION LABEL FOR VEHICLE
Vehicles with factory installed fluorescent dye have this identification label on the front side of hood.
Shut-off valve rotation A/C service valve
Clockwise Open
Counterclockwise Close
RHA273D
RHA274D

MTC-18
OIL
Revision: June 20062007 Versa
OILPFP:KLG00
Maintenance of Oil Quantity in CompressorEJS00579
The oil in the compressor circulates through the system with the refrigerant. Add oil to compressor when
replacing any component or after a large refrigerant leakage occurred. It is important to maintain the specified
amount.
If oil quantity is not maintained properly, the following malfunctions may result:

Lack of oil: May lead to a seized compressor.

Excessive oil: Inadequate cooling (thermal exchange interference)
OIL
OIL RETURN OPERATION
Adjust the oil quantity according to the test group shown below.
1. CHECK OIL RETURN OPERATION
Can oil return operation be performed?

A/C system works properly.

There is no evidence of a large amount of oil leakage.
CAUTION:
If excessive oil leakage is noted, do not perform the oil return operation.
OK or NG
OK >> GO TO 2.
NG >> GO TO 3.
2. PERFORM OIL RETURN OPERATION, PROCEEDING AS FOLLOWS
1. Start engine, and set the following conditions:
–Engine speed: Idling to 1,200 rpm
–A/C blower switch: ON
–Blower speed: Max. position
–Temp. control: Optional [Set so that intake air temperature is 25° to 30°C (77° to 86° F)].
–Intake position: Recirculation (REC)
2. Perform oil return operation for about 10 minutes.
3. Stop engine.
>> GO TO 3.
3. CHECK REPLACEMENT PART
Should the compressor be replaced?
YES >> GO TO MTC-19, "OIL ADJUSTING PROCEDURE FOR COMPRESSOR REPLACEMENT" .
NO >> GO TO MTC-19, "
OIL ADJUSTING PROCEDURE FOR COMPONENTS REPLACEMENT
EXCEPT COMPRESSOR" . TYPE 1 Compressor (CR-10) : NISSAN A/C System Oil Type R
TYPE 2 Compressor (CSV511) : NISSAN A/C System Oil Type S

TROUBLE DIAGNOSIS
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Component Parts and Harness Connector LocationEJS0057G
ENGINE COMPARTMENT
Insufficient cooling Go to Trouble Diagnosis Procedure for Insufficient Cooling.MTC-50
Insufficient heating Go to Trouble Diagnosis Procedure for Insufficient Heating.MTC-58
Noise Go to Trouble Diagnosis Procedure for Noise.MTC-60
Symptom Reference Page
1. Refrigerant pressure sensor E17 2. A/C compressor F3
WJIA2235E

TROUBLE DIAGNOSIS
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Operational CheckEJS0057J
The purpose of the operational check is to confirm that the system operates properly.
CHECKING BLOWER
1. Turn blower control dial clockwise to "1" position. Blower should operate on low speed.
2. Turn blower control dial clockwise to "2" position, and continue checking blower speed until all speeds are
checked.
3. Leave blower on Maximum speed.
If NG, go to trouble diagnosis procedure for MTC-37, "
Blower Motor Circuit" .
If OK, continue the check.
CHECKING DISCHARGE AIR
1. Turn mode door control dial to each position.
2. Confirm that discharge air comes out according to the air distribution table. Refer to MTC-22, "
Discharge
Air Flow" .
If NG, go to trouble diagnosis procedure for MTC-34, "
Mode Door" .
If OK, continue the check.
CHECKING RECIRCULATION
1. Set intake door lever to REC position.
2. Operate intake door lever to FRE position.
3. Listen for intake door position change (you should hear blower sound change slightly).
If NG, go to trouble diagnosis procedure for MTC-36, "
Intake Door" .
If OK, continue the check.
CHECKING TEMPERATURE DECREASE
1. Turn temperature control dial counterclockwise to full cold position.
2. Check for cold air at discharge air outlets.
If NG, go to trouble diagnosis procedure for MTC-50, "
Insufficient Cooling" .
If OK, continue the check.
CHECKING TEMPERATURE INCREASE
1. Turn temperature control dial clockwise to full hot position.
2. Check for hot air at discharge air outlets.
If NG, go to trouble diagnosis procedure for MTC-58, "
Insufficient Heating" .
If OK, continue the check.
CHECKING A/C SWITCH (IF EQUIPPED)
1. Turn fan control dial to the desired (1 to 4 speed) position.
2. Press A/C switch.
3. 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 MTC-41, "
Magnet Clutch Circuit (If Equipped)" .
If OK, continue the check.
CHECKING DEFROST A/C SWITCH (IF EQUIPPED)
1. Turn fan control dial to the desired (1 to 4 speed) position.
2. Turn mode dial to ( ) DEF.
3. Confirm that the compressor clutch engages (sound or visual inspection).
If NG, go to trouble diagnosis procedure for MTC-41, "
Magnet Clutch Circuit (If Equipped)" .
If all operational checks are OK (symptom cannot be duplicated), go to MTC-24, "
How to Perform Trouble
Diagnosis for Quick and Accurate Repair" and perform tests as outlined. If symptom appears, refer to MTC-
24, "SYMPTOM TABLE" and perform applicable trouble diagnosis procedures. Conditions : Engine running at normal operating temperature

TROUBLE DIAGNOSIS
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Revision: June 20062007 Versa
3. CHECK POWER SUPPLY FOR A/C COMPRESSOR
1. Disconnect A/C compressor connector.
2. Start the engine.
3. Turn blower control dial and A/C switch ON.
4. Check voltage between A/C compressor harness connector F3
terminal 1 and ground.
OK or NG
OK >> Replace magnet clutch. Refer to MTC-84, "Removal and
Installation of Compressor"
NG >> GO TO 4.
4. CHECK CIRCUIT CONTINUITY BETWEEN IPDM E/R AND COMPRESSOR
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R connector.
3. Check continuity between A/C compressor harness connector
F3 (A) terminal 1 and IPDM E/R harness connector E43 (B) ter-
minal 11.
OK or NG
OK >> Replace IPDM E/R. Refer to PG-29, "Removal and
Installation of IPDM E/R"
NG >> Repair harness or connector.
5. CHECK DEFROST A/C SWITCH
1. Start the engine.
2. Turn the mode control dial to (DEF) position.
Does the magnet clutch operate
OK >> GO TO 6.
NG >> GO TO 22.
6. CHECK BCM INPUT (COMPRESSOR ON) SIGNAL
1. Turn ignition switch OFF.
2. Check compressor ON/OFF signal. Refer to MTC-24, "
CON-
SULT-II Function (BCM)" .
OK or NG
OK >> GO TO 8.
NG >> GO TO 7.1 - Ground :Battery voltage
SJIA0743E
1 - 11 :Continuity should exist
WJIA2233E
A/C SW ON : AIR COND SW ON
A/C SW OFF : AIR COND SW OFF
R J I A 1111E