2007 NISSAN LATIO Therm

IDX-6
ALPHABETICAL INDEX
R
Radiator ............................................................ CO-11
Rear axle .......................................................... RAX-4
Rear combination lamp removal and installation LT-87
Rear door .......................................................... GW-47
Rear seat belt ...................................................... SB-6
Rear suspension ............................................... RSU-5
Rear washer .................................................... WW-30
Rear window defogger ...................................... GW-50
Rear wiper ....................................................... WW-30
Refrigerant connection precaution .................... MTC-5
Refrigerant discharging evacuating charging . MTC-80
Refrigerant general precaution ......................... MTC-5
Refrigerant lines .............................................. MTC-80
Refrigerant pressure sensor ............. EC-586, MTC-88
Refrigeration cycle .......................................... MTC-16
Remote keyless entry system ............................ BL-54
Removal and installation (A/T) ......................... AT-253
Reverse idler shaft (M/T) ................................... MT-18
Reverse lamp switch (M/T) - See Back-up lamp switch
(M/T) .................................................................. MT-11
Reverse main gear (M/T) ................................... MT-18
Road test ......... AT-58, AT-61, AT-64, AT-65, CVT-46
Room lamp - See Interior lamp ........................... LT-91
RP/SEN - Wiring diagram ................................ EC-587
S
SAE J1979 - Service $01 - 09 ........................... EC-47
Seat belt inspection ................................ SB-8, MA-27
Seat belt, front ..................................................... SB-3
Seat belt, rear ...................................................... SB-6
Secondary pressure sensor ........................... CVT-129
Secondary Speed Sensor ................................ CVT-95
SECPS - Wiring diagram ............................... CVT-130
SECPSV - Wiring diagram ............................. CVT-125
Self-diagnostic results .......................... EC-64, EC-116
SEN/PW - Wiring diagram ............................... EC-431
SESCVT - Wiring diagram ............................... CVT-96
SHIFT - Wiring diagram ................... AT-236, CVT-198
Shift control ...................................................... CVT-26
Shift control components (M/T) .......................... MT-21
Shift control system ....................................... CVT-191
Shift fork (M/T) ................................................... MT-21
Shift lever ........................................................... MT-12
Shift lock system .............................................. AT-235
Shift schedule ..................... AT-67, CVT-53, CVT-210
Shock absorber (rear) ....................................... RSU-9
Side air bag (satellite) sensor ......................... SRS-50
Side curtain air bag ......................................... SRS-47
Side trim .............................................................. EI-32
SMJ (super multiple junction) ............................ PG-75
Specification value ........................................... EC-133
Speedometer ........................................................ DI-5
Spiral cable ..................................................... SRS-44
Spot lamp .......................................................... LT-107
SPSW - Wiring diagram ................................. CVT-171
SROOF - Wiring diagram ................................... RF-13
SRS - See Supplemental Restraint System ...... SRS-4
SRS - Wiring diagram ..................................... SRS-13
SRS Trouble diagnoses .................................... SRS-9
SSV/A - Wiring diagram ................................... AT-152
SSV/B - Wiring diagram ................................... AT-157
Stall Test ......................................................... CVT-43
Stall test (A/T) .................................................... AT-53
START - Wiring diagram ................................... SC-12
Starting system ................................................. SC-10
Steering linkage ................................................. PS-12
Steering wheel and column ........................ PS-6, PS-9
Steering wheel turning force ................................ PS-6
Step motor .................................... CVT-164, CVT-168
STM - Wiring diagram ................................... CVT-165
Stop lamp ................................................ LT-71, LT-87
Stop lamp switch ............................................. EC-488
STOP/L - Wiring diagram ................................... LT-71
STSIG - Wiring diagram .................................. CVT-73
Sun roof, electric ................................................ RF-10
Sunroof .................................................. RF-10, RF-22
Supplemental Restraint System ........................ SRS-4
Suspension ....................................................... MA-26
Swirl control valve ........................................... EC-592
Symbols and abbreviations ...................... GI-10, GI-23
Symptom matrix chart ....................................... EC-92
Synchronizer (M/T) ........................................... MT-18
System readiness test (SRT) code ................... EC-52
T
Tachometer ........................................................... DI-5
Tail lamp ............................................................ LT-87
TAIL/L - Wiring diagram ..................................... LT-78
TCM circuit diagram ........................................ CVT-42
TCM function ................................................... CVT-24
TCM inspection table ........................... AT-78, CVT-54
TCV - Wiring diagram ...................... AT-135, CVT-106
Telephone .......................................................... AV-49
Theft warning system - See Vehicle security (Theft warn-
ing) system ....................................................... BL-193
Thermo control amp ........................................ MTC-63
Thermostat ........................................................ CO-18
Three way catalyst function ............................ EC-334
Three way catalyst precautions ............................ GI-5
Throttle control motor relay ............................. EC-493
Throttle position sensor (TPS) .. EC-206, EC-302, EC-
460, EC-462, EC-526
Throttle valve closed position learning .............. EC-78
Tie-rod ................................................................ PS-12
Timing chain ...................................................... EM-37
TLID - Wiring diagram ...................................... BL-177
Torque converter installation .... AT-254, AT-369, CVT-
208
Torque convertor clutch solenoid valve CVT-105, CVT-
110
TPS1 - Wiring diagram .................................... EC-304
TPS2 - Wiring diagram .................................... EC-208
TPS3 - Wiring diagram .................................... EC-528
Transmission case (M/T) .................................. MT-17

MA-14
ENGINE MAINTENANCE
Revision: June 20062007 Versa
If contaminated, flush the engine cooling system. Refer to MA-15, "FLUSHING COOLING SYSTEM" .
REFILLING ENGINE COOLANT
1. Install reservoir tank if removed. Refer to CO-11, "RADIATOR" .
2. Install radiator drain plug.

If water drain plug on cylinder block is removed, close and tighten it. Refer to EM-77, "CYLIN-
DER BLOCK" .
CAUTION:
Be sure to clean radiator drain plug and install with new O-ring. Refer to CO-11, "
Components" .
3. Make sure that each hose clamp has been firmly tightened.
4. Remove air duct assembly. Refer to EM-16, "
AIR CLEANER AND AIR DUCT" .
5. Disconnect heater hose (1) at position ( ) as shown.

Front

Enhance heater hose as high as possible.
6. Fill radiator and reservoir tank to specified level.

Pour engine coolant through engine coolant filler neck
slowly of less than 2 (2 1/8 US qt, 1-3/4 lmp qt) a minute
to allow air in system to escape.

Use NISSAN Genuine Engine Coolant or equivalent
mixed with water (distilled or demineralized). Fill cooling
system to specification. Refer to MA-11, "
RECOM-
MENDED FLUIDS AND LUBRICANTS".

When engine coolant overflows disconnected heater hose,
connect heater hose, and continue filling the engine coolant, if
heater hose is disconnected.
7. Install radiator cap.
8. Install air duct assembly. Refer to EM-16, "
AIR CLEANER AND AIR DUCT" .
9. Warm up until opening thermostat. Standard for warming-up time is approximately 10 minutes at 3,000
rpm.

Make sure thermostat opening condition by touching radiator hose (lower) to see a flow of warm water.
CAUTION:
Watch water temperature gauge so as not to overheat the engine.
10. Stop engine and cool down to less than approximately 50°C (122°F).

Cool down using fan to reduce the time.

If necessary, refill radiator up to filler neck with engine coolant.
11. Refill reservoir tank to “MAX” level line with engine coolant.
12. Repeat steps 6 through 10 two or more times with radiator cap installed until engine coolant level no
longer drops.
13. Check cooling system for leaks with engine running.
14. Warm up engine, and check for sound of engine coolant flow while running engine from idle up to 3,000
rpm with heater temperature controller set at several position between “COOL” and “WARM”.

Sound may be noticeable at heater unit.
15. Repeat step 14 three times.
16. If sound is heard, bleed air from cooling system by repeating steps 6 through 10 until engine coolant level
no longer drops.
PBIC3802E
SM A18 2B

MTC-2Revision: June 20062007 Versa CHECKING TEMPERATURE DECREASE ......... 33
CHECKING TEMPERATURE INCREASE .......... 33
CHECKING A/C SWITCH (IF EQUIPPED) ......... 33
CHECKING DEFROST A/C SWITCH (IF
EQUIPPED) ......................................................... 33
Mode Door .............................................................. 34
INSPECTION FLOW ........................................... 34
Air Mix Door ............................................................ 35
INSPECTION FLOW ........................................... 35
Intake Door ............................................................. 36
INSPECTION FLOW ........................................... 36
Blower Motor Circuit ............................................... 37
INSPECTION FLOW ........................................... 37
DIAGNOSTIC PROCEDURE FOR BLOWER
MOTOR ............................................................... 38
Magnet Clutch Circuit (If Equipped) ........................ 41
INSPECTION FLOW ........................................... 41
SYSTEM DESCRIPTION .................................... 42
DIAGNOSTIC PROCEDURE FOR MAGNET
CLUTCH .............................................................. 42
Insufficient Cooling ................................................. 50
INSPECTION FLOW ........................................... 50
PERFORMANCE TEST DIAGNOSIS ................. 52
PERFORMANCE CHART ................................... 54
TROUBLE DIAGNOSIS FOR UNUSUAL PRES-
SURE ................................................................... 55
Insufficient Heating ................................................. 58
INSPECTION FLOW ........................................... 58
Noise ...................................................................... 60
INSPECTION FLOW ........................................... 60
CONTROLLER .......................................................... 61
Removal and Installation ........................................ 61
REMOVAL ........................................................... 61
INSTALLATION .................................................... 61
Disassembly and Assembly .................................... 62
THERMO CONTROL AMPLIFIER ............................ 63
Removal and Installation ........................................ 63
REMOVAL ........................................................... 63
INSTALLATION .................................................... 63
A/C UNIT ASSEMBLY .............................................. 64
Removal and Installation ........................................ 64
REMOVAL ........................................................... 64
INSTALLATION .................................................... 65
Disassembly and Assembly .................................... 66
BLOWER MOTOR .................................................... 68
Removal and Installation ........................................ 68
REMOVAL ........................................................... 68
INSTALLATION .................................................... 68
INTAKE DOOR .......................................................... 69
Intake Door Cable Adjustment ................................ 69
AIR MIX DOOR ......................................................... 70
Air Mix Door Cable Adjustment .............................. 70
MODE DOOR ............................................................ 71
Mode Door Cable Adjustment ................................ 71
BLOWER FAN RESISTOR ....................................... 72
Removal and Installation ........................................ 72
REMOVAL ........................................................... 72
INSTALLATION .................................................... 72HEATER CORE .........................................................73
Removal and Installation .........................................73
REMOVAL ............................................................73
INSTALLATION ....................................................73
AIR CONDITIONER FILTER .....................................74
Removal and Installation .........................................74
FUNCTION ..........................................................74
REPLACEMENT TIMING ....................................74
REPLACEMENT PROCEDURES ........................74
DUCTS AND GRILLES .............................................75
Removal and Installation .........................................75
CENTER VENTILATOR GRILLES .......................76
SIDE VENTILATOR GRILLES (LH/RH) ...............76
DEFROSTER NOZZLE AND SIDE
DEFROSTER DUCTS (LH/RH) ...........................77
SIDE VENTILATOR DUCTS ................................77
CENTER VENTILATOR DUCTS .........................78
SIDE FOOT DUCTS ............................................78
FLOOR DUCTS ...................................................78
REFRIGERANT LINES .............................................80
HFC-134a (R-134a) Service Procedure ..................80
SETTING OF SERVICE TOOLS AND EQUIP-
MENT ...................................................................80
Components ............................................................82
Removal and Installation of Compressor ................84
REMOVAL ............................................................84
INSPECTION FOR CLUTCH DISC TO PULLEY
CLEARANCE .......................................................85
INSTALLATION ....................................................85
Removal and Installation of Low-pressure Flexible
Hose ........................................................................85
REMOVAL ............................................................85
INSTALLATION ....................................................86
Removal and Installation of High-pressure Flexible
Hose ........................................................................86
REMOVAL ............................................................86
INSTALLATION ....................................................87
Removal and Installation of High-pressure Pipe .....87
REMOVAL ............................................................87
INSTALLATION ....................................................87
Removal and Installation of Refrigerant Pressure
Sensor .....................................................................88
REMOVAL ............................................................88
INSTALLATION ....................................................88
Removal and Installation of Condenser ..................88
REMOVAL ............................................................88
INSTALLATION ....................................................88
Removal and Installation of Liquid Tank .................89
REMOVAL ............................................................89
INSTALLATION ....................................................89
Removal and Installation of Evaporator ..................90
REMOVAL ............................................................90
INSTALLATION ....................................................90
Removal and Installation of Expansion Valve .........91
REMOVAL ............................................................91
INSTALLATION ....................................................91
Checking for Refrigerant Leaks ..............................92
Checking System for Leaks Using the Fluorescent
Leak Detector ..........................................................92

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

MTC-26
TROUBLE DIAGNOSIS
Revision: June 20062007 Versa
PASSENGER COMPARTMENT
1. Front air control M33 2. Front blower motor resistor M151 3. Thermo control amp. M42
4. Front blower motor M62 5. Defrost A/C switch M41 (located on
back side of front air control)
WJIA2251E

MTC-42
TROUBLE DIAGNOSIS
Revision: June 20062007 Versa
SYSTEM DESCRIPTION
Thermo control amp. controls A/C compressor operation by intake air temperature and signal from ECM.
The defrost A/C switch controls A/C compressor operation by the BCM when the mode switch is turned to the
(DEF) position.
Low Temperature Protection Control
When intake air temperatures are higher than 4°C (39°F), the com-
pressor turns ON. The compressor turns OFF when intake air tem-
peratures are lower than 2°C (36°F).
DIAGNOSTIC PROCEDURE FOR MAGNET CLUTCH
SYMPTOM: Magnet clutch does not engage in A/C, defrost/foot, or defrost mode.
1. PERFORM AUTO ACTIVE TEST
Refer to PG-21, "
Auto Active Test" .
Does the magnet clutch operate?
YES >> GO TO 5.
NO >> Check 10A fuse (No. 42, located in the IPDM E/R). Refer to PG-24, "
IPDM E/R Terminal Arrange-
ment" .

If fuse is OK, GO TO 2.

If fuse is NG, replace fuse and check harness for short circuit. Repair or replace if necessary.
2. CHECK POWER SUPPLY FOR IPDM E/R
Check power supply to 10A fuse (No. 42 located in the IPDM E/R).
OK or NG
OK >> GO TO 3.
NG >> Check harness for open circuit. Repair or replace if necessary.
SJIA0741E
WJIA2250E
:Battery voltage should exist

TROUBLE DIAGNOSIS
MTC-47
C
D
E
F
G
H
I
K
L
MA
B
MTC
Revision: June 20062007 Versa
16. CHECK FRONT AIR CONTROL GROUND CIRCUIT
Check continuity between front air control harness connector M33
terminal 8 and ground.
OK or NG
OK >> GO TO 17.
NG >> Repair harness or connector.
17. CHECK POWER SUPPLY FOR THERMO CONTROL AMP.
1. Turn ignition switch OFF.
2. Disconnect thermo control amp. connector.
3. Turn ignition switch ON.
4. Confirm thermo amp signal between thermo control amp. har-
ness connector M42 terminal 3 and ground using oscilloscope.
OK or NG
OK >> GO TO 18.
NG >> GO TO 20.
18. CHECK POWER SUPPLY FOR THERMO CONTROL AMP.
Check voltage between thermo control amp. harness connector M42
terminal 1 and ground.
OK or NG
OK >> GO TO 19.
NG >> Check power supply circuit and 10A fuse [No. 16,
located in the fuse block (JB)]. Refer to PG-76, "
FUSE
BLOCK-JUNCTION BOX (J/B)" .

If fuse is OK, check harness for open circuit. Repair or
replace if necessary.

If fuse is NG, replace fuse and check harness for
short circuit. Repair or replace if necessary. 8 - Ground :Continuity should exist
SJIA0758E
Te r m i n a l s
Vo ltag e
(Approx.) (+)
(-)
Connector Terminal
Thermo control
amp.: M423Ground
SJIA0760E
ZJIA0719J
1 - Ground :Battery voltage
SJIA0762E

MTC-48
TROUBLE DIAGNOSIS
Revision: June 20062007 Versa
19. CHECK THERMO CONTROL AMP. GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Check continuity between thermo control amp. harness connec-
tor M42 terminal 2 and ground.
OK or NG
OK >> Replace thermo control amp. Refer to MTC-63,
"THERMO CONTROL AMPLIFIER" .
NG >> Repair harness or connector.
20. CHECK CIRCUIT CONTINUITY BETWEEN THERMO CONTROL AMP. AND BCM
1. Turn ignition switch OFF.
2. Disconnect BCM connector.
3. Check continuity between thermo control amp. harness connec-
tor M42 (A) terminal 3 and BCM harness connector M18 (B) ter-
minal 26.
OK or NG
OK >> GO TO 21.
NG >> Repair harness or connector.
21. CHECK CAN COMMUNICATION
Check CAN communication. Refer to LAN-44, "
TROUBLE DIAGNOSIS" .

BCM – ECM

ECM – IPDM E/R
OK or NG
OK >> Replace BCM. Refer to BCS-25, "Removal and Installation of BCM" .
NG >> Repair or replace malfunctioning part(s).
22. CHECK DEFROST A/C SWITCH CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM connector.
3. Press the defrost A/C switch.
NOTE:
The defrost A/C switch is located on back side of the front air
control.
4. Check continuity between BCM harness connector M18 terminal
10 and ground.
OK or NG
OK >> Replace BCM. Refer to BCS-25, "Removal and Installation of BCM" .
NG >> GO TO 23.2 - Ground :Continuity should exist
SJIA0763E
3 - 26 :Continuity should exist
SJIA0764E
10 - Ground :Continuity should existWJIA2252E