Page 303 of 1306

SEF484YE
On Board Diagnosis LogicNEEC1050The ECM monitors the switching frequency ratio of heated oxygen
sensor 1 and 2.
A three way catalyst with high oxygen storage capacity will indicate
a low switching frequency of heated oxygen sensor 2. As oxygen
storage capacity decreases, the heated oxygen sensor 2 switching
frequency will increase.
When the frequency ratio of heated oxygen sensors 1 and 2
approaches a specified limit value, the three way catalyst malfunc-
tion is diagnosed.
DTC No. Malfunction is detected when ... Check Items (Possible Cause)
P0420
0420+Three way catalyst does not operate properly.
+Three way catalyst does not have enough oxygen stor-
age capacity.+Three way catalyst
+Exhaust tube
+Intake air leaks
+Injectors
+Injector leaks
+Spark plug
+Improper ignition timing
PBIB0566E
PBIB0567E
DTC Confirmation ProcedureNEEC1051NOTE:
If ªDTC Confirmation Procedureº has been previously
conducted, always turn ignition switch ªOFFº and wait at least
5 seconds before conducting the next test.
TESTING CONDITION:
+Open engine hood before conducting following proce-
dure.
+Do not hold engine speed more than specified minutes
below.
With CONSULT-II
1) Turn ignition switch ªONº.
2) Select ªDTC & SRT CONFIRMATIONº then ªSRT WORK SUP-
PORTº mode with CONSULT-II.
3) Start engine.
4) Rev engine up to 2,500 to 3,500 rpm and hold it for 3 consecu-
tive minutes then release then accelerator pedal completely.
If ªINCMPº of ªCATALYSTº changes to ªCMPLTº, go to step 7.
5) Wait 5 seconds at idle.
6) Rev engine up to 2,500 to 3,500 rpm and hold it until ªINCMPº
of ªCATALYSTº changes to ªCMPLTº. (It will take maximum of
approximately 5 minute.)
SEF560X
7) Select ªSELF-DIAG RESULTSº mode with CONSULT-II.
If the 1st trip DTC is detected, go to ªDIAGNOSTIC
PROCEDUREº, EC-3280. If not ªCOMPLTº stop engine and
cool down ªCOOLANT TEMP/SEº to less than 70ÉC (158ÉF)
and then retest from step 1).
DTC P0420 THREE WAY CATALYST
FUNCTION
KA24DE (EURO OBD)
On Board Diagnosis Logic
EC-3278
Page 1030 of 1306

Fluids and Lubricants
Capacity (Approximate)
Recommended Fluids/Lubricants
LiterImp
measure
Engine oil (Refill)
With oil filter
Gasoline engine: API SG, SH or SJ*1
ILSAC grade GF-I or GF-II*1
Diesel engine: API CD, CE, CF, CF-4 for TD engine*1,
*5
ACEA B3-96, 98 or ACEA B3/E3 96, 98 for TD engine*4
API CF-4 for YD engine*1, *5
ACEA 98-B1 for YD engine KA24DE2WD 3.6
4WD 4.13-1/8 qt
3-5/8 qt
YD25DDTi2WD 5.6 *7
4WD 4.34-7/8 qt *7
3-3/4 qt
Without oil filter
KA24DE2WD 3.3
4WD 3.82-7/8 qt
3-3/8 qt
YD25DDTi2WD 5.3 *7
4WD 4.04-5/8 qt *7
3-1/2 qt
Cooling system (With reservoir)
KA24DE 6.9 6-1/8 qt
Genuine Nissan Anti-freeze Coolant (L250)
or equiva-
lent*6
YD25DDTi 8.6 7-5/8 qt
Manual transmission
gear oilFS5R30A2WD 2.8
4WD 5.14-7/8 pt
9pt
API GL-4, Viscosity SAE 75W-85 only
FS5W71C2WD 2.0
4WD 4.93-1/2 pt
8-5/8 pt
Transfer fluid TX10A 2.2 2 qt Genuine Nissan ATF or equivalent*2 or API GL-4*1
Differential gear oil
Front R180A 1.3 2-1/4 pt
Standard differential gear: API GL-5*1
Limited-slip differential (LSD) gear: Gear Oil Hypoid
LSD or equivalent*3 Rear C200 1.3 2-1/4 pt
Power steering fluid Ð Ð Type DEXRON
TMIII or equivalent
Brake and clutch fluid Ð Ð DOT 3 or DOT 4 (U.S. FMVSS No. 116)
Propeller shaft grease Ð Ð NLGI No. 2 (Lithium soap base)
Multi-purpose grease Ð Ð NLGI No. 2 (Lithium soap base)
*1: For further details, see ªSAE Viscosity Numberº.
*2: Contact a NISSAN dealership for more information regarding suitable fluid, including recommended brand(s) of DEXRONTMIII/MERCONTMAuto-
matic Transmission Fluid.
*3: API GL-5, SAE 140 and 10% volume of LSD Friction Modifier (Part No.: 38469-C6000) is an equivalent.
*4: If ACEA B3-96, 98 oils are not available, API CD, CE, CF, CF-4 oil may be used. However, ACEA oils are strongly recommended if at all possible.
*5: Never use CG-4 grade oil.
*6: Use Nissan Genuine Anti-freeze Coolant (L250), or equivalent in its quality,
in order to avoid possible aluminum corrosion within the engine cool-
ing system caused by the use of non-genuine engine coolant.
Note that any repairs for the incidents within the engine cooling system while using non-genuine engine coolant may not be covered by
the warranty even if such incidents occurred during the warranty period.
*7: Including 4WD appearance 2WD models.
RECOMMENDED FLUIDS AND LUBRICANTS
MA-3008
Page 1037 of 1306

3. Remove reservoir tank, drain coolant, then clean reservoir
tank.
+Be careful not to allow coolant to contact drive belts.
4. Remove drain plug of cylinder block.
5. Check drained coolant for contaminants such as rust, corro-
sion or discoloration. If contaminated flush engine cooling
system, refer to MA-3016, ªFLUSHING COOLING SYS-
TEMº.
Ð REFILLING ENGINE COOLANT Ð
1. Install reservoir tank, radiator drain plug and cylinder block
drain plug.
+Apply sealant to the thread of cylinder block drain plugs.
:8-11Nzm (0.8 - 1.2 kg-m, 70 - 104 in-lb)
2. Fill radiator with coolant to the filler neck of the radiator cap
at a rate of 2!(1-3/4 Imp qt)/min or lower.
+Use genuine Nissan Anti-freeze Coolant or equivalent
mixed with water (distilled or demineralized).
Refer to MA-3008, ªRECOMMENDED FLUIDS AND LUBRI-
CANTSº.
CAUTION:
If the filling rate is too fast, this could lead to air being mixed
in the coolant. Be sure to fill the coolant slowly according
to the rate indicated above.
Engine coolant capacity (With reservoir tank):
8.6!(7-5/8 Imp qt)
Reservoir tank capacity:
0.7!(5/8 Imp qt)
3. Fill reservoir tank to the MAX level.
4. Warm up engine to normal operating temperature without
radiator cap installed.
+If coolant overflows radiator filler hole, install radiator
cap.
5. Run engine at 3,000 rpm for 10 seconds and return to idle
speed with radiator cap installed.
+Repeat two or three times.
Watch coolant temperature gauge so as not to overheat the
engine.
6. Stop engine and cool it down.
+Cool down using a fan to reduce the time.
+If necessary, refill radiator up to filler neck with coolant.
7. Refill reservoir tank to MAX level line with coolant.
8. Repeat steps 4 through 7 two or more times with radiator cap
installed until coolant level no longer drops.
9. Check cooling system for leaks with engine running.
SMA162D
SMA182B Radiator
SMA412B
ENGINE MAINTENANCEYD25DDTi
Changing Engine Coolant (Cont'd)
MA-3015