2007 NISSAN TIIDA low oil pressure

ENGINE OIL
LU-7
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2. Disconnect harness connector at oil pressure switch (2), and
remove oil pressure switch (2) from the cylinder block (1) using
a deep socket (commercial service tool).
CAUTION:
Never drop or shock oil pressure switch.
3. Install oil pressure gauge and hose (SST).
4. Start engine and warm it up to normal operating temperature.
5. Check oil pressure with engine running under no-load.
NOTE:
When engine oil temperature is low, engine oil pressure becomes high.
If difference is extreme, check oil passage and oil pump for oil leaks.
6. After the inspections, install oil pressure switch as follows:
a. Remove old liquid gasket adhering to oil pressure switch and engine.
b. Apply liquid gasket and tighten oil pressure switch to specification.
Use Genuine Liquid Gasket or equivalent.
c. Check engine oil level. Refer to LU-6, "
Inspection".
d. After warming up engine, make sure there is no leaks of engine oil with running engine.
DrainingINFOID:0000000001381528
WARNING:
 Be careful not to get burned, as engine oil may be hot.
 Prolonged and repeated contact with used engine oil may cause skin cancer. Try to avoid direct skin
contact with used engine oil. If skin contact is made, wash thoroughly with soap or hand cleaner as
soon as possible.
1. Warm up the engine, and check for engine oil leakage from engine components. Refer to LU-6, "
Inspec-
tion".
2. Stop the engine and wait for 10 minutes.
3. Loosen oil filler cap.
4. Remove drain plug and then drain engine oil.
PBIC3817E
SLC926ZA
Engine oil pressure : Refer to LU-10, "Engine Oil Pressure".
Oil pressure switch : Refer to EM-100, "
Exploded View".

ENGINE OIL
LU-15
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ON-VEHICLE MAINTENANCE
ENGINE OIL
InspectionINFOID:0000000001337827
ENGINE OIL LEVEL
NOTE:
Before starting engine, park vehicle on a level surface and check the engine oil level. If engine is already
started, stop it and allow 10 minutes before checking.
1. Pull out oil level gauge and wipe it clean.
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 turbidity or heavy contamination.
 If engine oil becomes turbid and white, it is highly probable that 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 yourself, as engine oil may be hot.
 For engine oil pressure check the transaxle should be in “Neutral position”, and apply the parking
brake securely.
1. Disconnect harness connector at oil pressure switch (1), and
remove oil pressure switch using a suitable tool.
 Oil pan (lower) (2)
⇐ Front
WBIA0776E
PBIC3310E

LU-16
< ON-VEHICLE MAINTENANCE >[MR18DE]
ENGINE OIL
2. Install oil pressure gauge and hose.
3. Check engine oil level. Refer to LU-15, "
Inspection".
4. Start engine and warm it up to normal operating temperature.
5. Check oil pressure with engine running under no-load.
NOTE:
When engine oil temperature is low, engine oil pressure becomes high.
Engine oil pressure [Engine oil temperature at 80°C (176°F)]
If difference is extreme, check oil passage and oil pump for oil leaks.
6. After the inspections, install oil pressure switch as follows:
a. Remove old liquid gasket adhering to oil pressure switch and engine.
b. Apply liquid gasket and tighten oil pressure switch to specification.
Use Genuine Silicone RTV Sealant or equivalent. Refer to GI-27, "
Recommended Chemical Prod-
ucts and Sealants".
c. Check engine oil level. Refer to LU-15, "
Inspection".
d. After warming up engine, make sure there are no engine leaks of oil with running engine.
Changing Engine OilINFOID:0000000001337828
WARNING:
 Be careful not to burn yourself, as engine oil may be hot.
 Prolonged and repeated contact with used engine oil may cause skin cancer; try to avoid direct skin
contact with used engine oil. If skin contact is made, wash thoroughly with soap or hand cleaner as
soon as possible.
1. Warm up engine, park vehicle on a level surface and check for engine oil leakage from engine compo-
nents. Refer to LU-15, "
Inspection".
2. Stop engine and wait for 10 minutes.Tool number : ST25051001 (J-25695-1)
: ST25052000 (J-25695-2)
WBIA0571E
Engine speed
rpm Approximate discharge pressure
kPa (bar, kg/cm2, psi)
Idle speed More than 71.5 (0.70, 0.70, 10)
2,000 More than 200 (2.0, 2.0, 29)
Oil pressure switch : 14.7 N·m (1.5 kg-m, 11 ft-lb)

LU-26
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ENGINE OIL
ON-VEHICLE MAINTENANCE
ENGINE OIL
InspectionINFOID:0000000001381537
OIL LEVEL AND MUDDINESS
 Before starting the engine, check the oil level placing the vehicle
on a level surface. If the engine is already started, stop it and allow
10 minutes before checking.
 Make sure the oil level is within the range shown.
 If it is out of range, adjust it.
 Check the oil for white turbidity or remarkable contamination.
 If the oil becomes turbid and white, it is highly probable that it is
contaminated with coolant. Find the cause and repair.
OIL LEAKAGE
Check for oil leakage around the following area.
Oil pan
 Oil pan drain plug
 Oil pressure switch
 Oil filter bracket
 Vacuum pump
 Oil pump housing
 Mating surface between cylinder block and cylinder head
 Mating surface between cylinder head and rocker cover
 Oil cooler
 Crankshaft oil seals
OIL PRESSURE CHECK
WARNING:
 Be careful not to burn yourself, as the engine oil is hot.
 Oil pressure check should be done in Neutral “N” position.
1. Check the engine oil level.
2. Remove engine undercover using power tool.
3. Disconnect the electrical connector (A) and remove the oil pres-
sure switch (1) to connect the oil pressure gauge [SST:
KV113E0020 (Mot. 836-05)].
4. After warming up the engine, make sure oil pressure corre-
sponding to the engine speed is produced.
5. After checking, install the oil pressure switch (1) as follows.
a. Remove old sealant adhering to the oil pressure switch (1) and
engine.
b. Apply thread sealant.
Use Genuine Liquid Gasket or equivalent.
6. Start engine and check for oil leakage.
MBIB0548E
Idle speed : Refer to LU-33, "EngineOilPressure".
3000 rpm : Refer to LU-33, "
EngineOilPressure".
Oil pressure switch:
: 25 N·m (2.55 kg-m, 18.4 ft-lb)
ALBIA0418ZZ

OIL FILTER BRACKET
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ON-VEHICLE REPAIR
OIL FILTER BRACKET
Exploded ViewINFOID:0000000001381541
Removal and InstallationINFOID:0000000001381542
REMOVAL
CAUTION:
 Be careful not to get burned when the engine and engine oil are hot.
 When removing, prepare a shop cloth to absorb any oil leakage or spillage.
 Do not allow engine oil to adhere to the drive belts.
 Completely wipe off any oil that adhere to the engine and the vehicle.
1. Remove engine undercover using power tool.
2. Remove oil filter. Refer to LU-28, "
Replacement".
3. Disconnect oil pressure switch electrical connector.
4. Remove oil filter bracket.
INSTALLATION
Installation is in the reverse order of removal.
1. O-ring 2. Oil filter bracket 3. Oil pressure switch
4. Oil filter 5. O-ring 6. Connecting bolt
A. To oil cooler
E1BIA0012GB

LU-30
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OIL COOLER
OIL COOLER
Exploded ViewINFOID:0000000001381543
Removal and InstallationINFOID:0000000001381544
CAUTION:
 Be careful not to get burned when the engine and engine oil are hot.
 When removing, prepare a shop cloth to absorb any oil leakage or spillage.
 Completely wipe off any oil that adhere to the engine and the vehicle.
REMOVAL
1. Remove engine undercover using power tool.
2. Drain engine coolant. Refer to CO-58, "
Draining".
CAUTION:
Perform when engine is cold.
3. Remove RH front wheel. Refer to WT-6, "
Rotation".
4. Remove RH fender protector. Refer to EXT-22, "
Removal and Installation".
5. Remove drive belt. Refer to EM-263, "
Removal and Installation".
6. Remove generator and position aside. Refer to CHG-43, "
Removal and Installation".
7. Remove A/C compressor and position aside. Refer to HA-35, "
Removal and Installation of Compressor -
K9K".
8. Remove oil filter and oil filter bracket. Refer to LU-28, "
Replacement".
1. Cylinder block 2. Water pipe 3. O-ring
4. O-ring 5. O-ring 6. Oil cooler
7. Connecting stud 8. O-ring 9. Oil filter bracket
10. Oil pressure switch 11. Oil filter 12. O-ring
13. Connecting bolt
A. To radiator lower hose B. To water pump
E1BIA0011GB

OIL COOLER
LU-31
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9. Disconnect oil pressure switch electrical connector.
10. Remove the oil cooler connecting stud.
11. Remove oil cooler.
INSTALLATION
Installation is in the reverse order of removal.
 Replace the O-ring of the oil cooler, positioning the lip of the seal behind the lug of the oil cooler.
 Confirm that no foreign objects are adhering to the seal contact areas of the oil cooler and cylinder block.
InspectionINFOID:0000000001381545
INSPECTION AFTER REMOVAL
Check oil cooler for cracks and clogging by blowing through coolant inlet. If necessary, replace oil cooler
assembly.

MA-34
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ENGINE MAINTENANCE (MR18DE)
RADIATOR : Checking Radiator Cap
INFOID:0000000001730871
 Check valve seat of radiator cap.
- Check if valve seat is swollen to the extent that the edge of the
plunger cannot be seen when watching it vertically from the top.
- Check if valve seat has no soil and damage.
 Pull negative-pressure valve to open it, and make sure that it is
completely closed when released.
- Make sure that there is no dirt or damage on the valve seat of radi-
ator cap negative-pressure valve.
- Make sure that the valve operates properly in the opening and
closing conditions.
 Check radiator cap relief pressure using suitable tool.
- When connecting the radiator cap to the tester, apply water or
coolant to the cap seal surface.
- Replace the radiator cap if there is an abnormality in the negative-
pressure valve, or if the open-valve pressure is outside of the stan-
dard values.
 Replace radiator cap if there it does not comply to specifications to the above three checks.
CAUTION:
When installing radiator cap, thoroughly wipe out the radiator filler neck to remove any waxy residue
or foreign material.
RADIATOR : Checking RadiatorINFOID:0000000001730872
Check radiator for mud or clogging. If necessary, clean radiator as follows.
 Be careful not to bend or damage radiator fins.
 When radiator is cleaned without removal, remove all surrounding parts such as cooling fan, radiator shroud
and horns. Then tape harness and connectors to prevent water from entering.
1. Apply water by hose to the back side of the radiator core vertically downward.
2. Apply water again to all radiator core surface once per minute.
3. Stop washing if any stains no longer flow out from radiator.
4. Blow air into the back side of radiator core vertically downward.
 Use compressed air lower than 490 kPa (4.9 bar, 5 kg/cm
2, 71 psi) and keep distance more than 30 cm
(11.8 in).
5. Blow air again into all the radiator core surfaces once per minute until no water sprays out.
FUEL LINES
PBIC2816E
SMA967B
Standard: 78 – 98 kPa (0.78 - 0.98 bar, 0.8 – 1.0 kg/cm2, 11
– 14 psi)
Limit: 59 kPa (0.59 bar, 0.6 kg/cm
2, 9 psi)
WBIA0570E