
MA-20
< SERVICE INFORMATION >
ENGINE MAINTENANCE (HR16DE)
AIR CLEANER FILTER : Removal and Installation
INFOID:0000000005714314
REMOVAL
1. Push the tabs (A) of both ends of the air cleaner cover (1) into the inside (B).
2. Pull up the air cleaner cover (1) and remove it (C).
3. Remove air cleaner filter (1) and holder (2) assembly from the air cleaner case.
4. Remove the air cleaner filter (1) from the holder (2).
INSPECTION AFTER REMOVAL
It is necessary to replace the air cleaner filter at the recommended intervals, more often under dusty driving
conditions. Refer to MA-9, "
Introduction of Periodic Maintenance".
INSTALLATION
Installation is in the reverse order of removal.
• Install the air cleaner cover (1) in the direction shown.
• Air cleaner filter (2)
• Holder (3)
ENGINE OIL
ENGINE OIL : InspectionINFOID:0000000005714315
ENGINE OIL LEVEL
NOTE:
Park vehicle on a level surface, wait 10 minutes and check the engine oil level.
1. Pull out oil level gauge and wipe it clean.
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PBIC3559J
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ENGINE MAINTENANCE (HR16DE)MA-21
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2. Insert oil level gauge and make sure the engine oil level is within the range (A) as shown.
3. If it is out of range, adjust it.
ENGINE OIL APPEARANCE
• Check engine oil for white milky appearance or excessive contamination.
• If engine oil becomes white, it is highly probable t hat it is contaminated with engine coolant. Repair or
replace damaged parts.
ENGINE OIL LEAKAGE
Check for engine oil leakage around the following areas:
• Oil pan (upper and lower)
• Oil pan drain plug
• Oil pressure switch
• Oil filter
• Intake valve timing control solenoid valve
• Front cover
• Mating surface between cylinder head and camshaft bracket
• Mating surface between cylinder block and cylinder head
• Mating surface between cylinder head and rocker cover
• Crankshaft oil seals (front and rear)
• Oil filter (for intake valve timing control)
OIL PRESSURE CHECK
WARNING:
• Be careful not to burn yoursel f, as engine oil may be hot.
• For engine oil pressure check the transaxle should be in “Park position” (A/T models) or “Neutral
position” (M/T models), and apply the parking brake securely.
1. Check engine oil level.
2. Remove engine under cover. Refer to EI-15, "
Removal and Installation".
3. Disconnect harness connector at oil pressure switch (2), and remove oil pressure switch (2) from the cylinder block (1) using
suitable tool.
CAUTION:
Never drop or shock oil pressure switch.
JPBIA0554ZZ
PBIC3817E
Revision: January 20102010 Versa

ENGINE MAINTENANCE (MR18DE)MA-29
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CAUTION:
Be sure to clean radiator drain plug and install with new O-ring. Refer to CO-40, "
Component".
3. Fill radiator and reservoir tank with water and reinstall radiator cap.
4. Run engine and warm it up to normal operating temperature.
5. Rev engine two or three times under no-load.
6. Stop engine and wait until it cools down.
7. Drain water from the cooling system.
8. Repeat steps 1 through 7 until clear water begins to drain from radiator.
FUEL LINES
FUEL LINES : Checking Fuel LineINFOID:0000000005714326
Inspect fuel lines, fuel filler cap and fuel tank for improper attach-
ment, leaks, cracks, damage, loos e connections, chafing or deterio-
ration.
If necessary, repair or replace damaged parts.
AIR CLEANER FILTER
AIR CLEANER FILTER : ComponentINFOID:0000000005714327
SMA803A
1. Air cleaner filter 2. Holder 3. Air cleaner cover
4. Seal 5. Mass air flow sensor 6. Air duct
7. PCV hose 8. Air duct (Inlet) 9. Air duct (Front)
WBIA0770E
Revision: January 20102010 Versa

MA-30
< SERVICE INFORMATION >
ENGINE MAINTENANCE (MR18DE)
AIR CLEANER FILTER : Changing Air Cleaner Filter
INFOID:0000000005714328
REMOVAL
1. Push the tabs (A) of both ends of the air cleaner cover (1) into the inside (B).
2. Pull up the air cleaner cover (1) and remove it (C).
3. Remove the air cleaner filter (1) and holder (2) assembly from the air cleaner case.
4. Remove the air cleaner filter (1) from the holder (2).
INSPECTION AFTER REMOVAL
It is necessary to replace the air cleaner filter at the recommended intervals, more often under dusty driving
conditions. Refer to MA-9, "
Introduction of Periodic Maintenance".
INSTALLATION
Installation is in the reverse order of removal.
• Install the air cleaner cover (1) in the direction shown.
• Air cleaner filter (2)
• Holder (3)
ENGINE OIL
ENGINE OIL : InspectionINFOID:0000000005714329
ENGINE OIL LEVEL
NOTE:
Park vehicle on a level surface, wait 10 minutes and check the engine oil level.
1. Pull out oil level gauge and wipe it clean.
10. Clip 11. Resonator 12. Grommet
13. Air cleaner case A. To electric throttle control actuator B. To rocker cover
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Revision: January 20102010 Versa

ENGINE MAINTENANCE (MR18DE)MA-31
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2. Insert oil level gauge and make sure the engine oil level is within the range (A) as shown.
3. If it is out of range, adjust it.
ENGINE OIL APPEARANCE
• Check engine oil for white milky appearance or excessive contamination.
• If engine oil becomes white, it is highly probable t hat it is contaminated with engine coolant. Repair or
replace damaged parts.
ENGINE OIL LEAKAGE
Check for engine oil leakage around the following areas:
• Oil pan (upper and lower)
• Oil pan drain plug
• Oil pressure switch
• Oil filter
• Intake valve timing control solenoid valve
• Front cover
• Mating surface between cylinder block and cylinder head
• Mating surface between cylinder head and rocker cover
• Crankshaft oil seals (front and rear)
• Oil filter (for intake valve timing control)
OIL PRESSURE CHECK
WARNING:
• Be careful not to burn yoursel f, as engine oil may be hot.
• For engine oil pressure check the transaxle should be in “ Park position” (A/T models) and (CVT
models) or “Neutral position” (M/T mode ls), and apply the parking brake securely.
1. Check engine oil level.
2. Remove engine under cover. Refer to EI-15, "
Removal and Installation".
3. Disconnect harness connector at oil pressure switch (1), and remove oil pressure switch (1) from the cylinder block using suit-
able tool.
• Oil pan (lower) (2)
• : Front
CAUTION:
Do not drop or shock oil pressure switch.
WBIA0776E
PBIC3310E
Revision: January 20102010 Versa

CHASSIS AND BODY MAINTENANCEMA-37
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CHASSIS AND BODY MAINTENANCE
IN-CABIN MICROFILTER
IN-CABIN MICROFILTER : Removal and InstallationINFOID:0000000005714334
FUNCTION
The fresh air (A) and the recirculated air (B) drawn inside the pas-
senger compartment by the blower fan (1) is kept clean (C) on either
mode by the air conditioner filter (2), located before the evaporator
(3), in the A/C unit assembly.
REPLACEMENT TIMING
Replace the air conditioner filter according to the maintenance schedules. Refer to MA-9.
NOTE:
The air conditioner filter caution label is located inside the glove box door.
REPLACEMENT PROCEDURES
1. Remove the glove box assembly. Refer to IP-11.
2. Compress the air conditioner filter (1) downward while sliding it to the RH side of the vehicle to release the upper pawl.
3. Move the bottom of air conditioner filter (1) upward as shown to
release the bottom tab, then remove it.
4. Replace the air conditioner filter with new one and in stall the new filter in the A/C unit assembly.
CAUTION:
Make sure that the air cond itioner filter lower tab is fully seated, and that the air conditioner upper
pawl is locked into place securing the new filter into the A/C unit assembly.
5. Install the glove box assembly. Refer to IP-11
.
EXHAUST SYSTEM
EXHAUST SYSTEM : Checking Exhaust System HR16DEINFOID:0000000005714335
Check exhaust pipes, muffler and mounting for improper attachment,
leaks, cracks, damage or deterioration.
• If necessary, repair or replace damaged parts.
WJIA2253E
SJIA0652E
SMA211A
Revision: January 20102010 Versa

MTC-1
AIR CONDITIONER
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CONTENTS
MANUAL AIR CONDITIONER
SERVICE INFORMATION .. ..........................3
PRECAUTIONS .............................................. .....3
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ............................................................. ......
3
Precaution Necessary for Steering Wheel Rota-
tion After Battery Disconnect ............................... ......
3
Precaution for Procedure without Cowl Top Cover ......4
Precaution for Working with HFC-134a (R-134a) ......4
General Refrigerant Precaution ................................4
Oil Precaution ............................................................5
Precaution for Refrigerant Connection ......................5
Precaution for Service of Compressor ................ ......7
Precaution for Service Equipment ....................... ......8
Precaution for Leak Detection Dye ...........................9
PREPARATION ..................................................11
HFC-134a (R-134a) Service Tool and Equipment ....11
Commercial Service Tool ........................................14
REFRIGERATION SYSTEM ..............................15
Refrigerant Cycle ................................................ ....15
Refrigerant System Protection ................................15
Component Part Location ................................... ....16
OIL ......................................................................17
Maintenance of Oil Quantity in Compressor ....... ....17
AIR CONDITIONER CONTROL .........................19
Control Operation ................................................ ....19
Discharge Air Flow ..................................................20
System Description .................................................20
TROUBLE DIAGNOSIS .....................................22
CONSULT-III Function (BCM) ............................. ....22
How to Perform Trouble Diagnosis for Quick and
Accurate Repair ......................................................
23
Component Parts and Harness Connector Loca-
tion ...................................................................... ....
23
Schematic ...............................................................26
Wiring Diagram - Heater - .......................................27
Wiring Diagram - A/C,M - .................................... ....28
Operational Check ...................................................31
Mode Door ...............................................................32
Air Mix Door .............................................................33
Intake Door ..............................................................34
Front Blower Motor Circuit .......................................34
Magnet Clutch Circuit (If Equipped) ..................... ....38
Insufficient Cooling ..................................................46
Insufficient Heating ..................................................53
Noise .......................................................................54
CONTROLLER ..................................................56
Removal and Installation .........................................56
Disassembly and Assembly .....................................57
THERMO CONTROL AMPLIFIER ....................58
Removal and Installation .........................................58
A/C UNIT ASSEMBLY ......................................59
Removal and Installation .........................................59
Disassembly and Assembly .....................................61
BLOWER MOTOR ............................................63
Removal and Installation .........................................63
INTAKE DOOR ..................................................64
Intake Door Cable Adjustment .................................64
AIR MIX DOOR .................................................65
Air Mix Door Cable Adjustment ...............................65
MODE DOOR ....................................................66
Mode Door Cable Adjustment .................................66
BLOWER FAN RESISTOR ...............................67
Removal and Installation .........................................67
HEATER CORE .................................................68
Removal and Installation .........................................68
AIR CONDITIONER FILTER .............................69
Removal and Installation .........................................69
Revision: January 20102010 Versa

A/C UNIT ASSEMBLYMTC-61
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Disassembly and AssemblyINFOID:0000000005396510
1. Blower case (right) 2. Foot duct (right) 3. Blower motor
4. Sub ventilator·defroster door lever 5. Sub ventilator·defroster door rod 6. Ventilator·defroster door lever
7. Ventilator·defroster door rod 8. Intake door lever 9. Ventilator·defroster door link
10. Main link 11. Thermo control amp.
(MR18DE - TYPE1) 12. Heater pipe packing
13. Lower blower case 14. Heater pipe cover 15. Heater pipe clip
16. Intake door link 17. Blower fan resistor 18. Intake case (left)
19. Center defroster duct 20. Blower case (left) 21. Cover
22. Cover 23. Expansion valve cover 24. Foot door lever
25. Foot door link 26. Expansion valve 27. Air conditioner filter
28. Evaporator cover 29. Heater core 30. Spring
31. Water valve rod 32. Air mix door lever 33. Intake door
34. Intake case (right) 35. Foot duct (left) 36. Ventilator·defroster door
37. Foot door 38. Air mix door 39. Seal
SJIA1515E
Revision: January 20102010 Versa