2005 NISSAN X-TRAIL muffler

TROUBLE DIAGNOSIS
EC-87
[QR (WITH EURO-OBD)]
C
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EC

1 - 6: The numbers refer to the order of inspection.Va l v e
mecha-
nismTiming chain
55555 55 5EM-46
CamshaftEM-56
Intake valve timing controlEM-46
Intake valve
3EM-70
Exhaust valve
Exhaust Exhaust manifold/Tube/Muffler/
Gasket
55555 55 5EM-25
, EX-
2Three way catalyst
Lubrica-
tionOil pan/Oil strainer/Oil pump/Oil
filter/Oil gallery
55555 55 52EM-27
, LU-
13 , LU-10 ,
LU-5
Oil level (Low)/Filthy oilLU-7
Cooling Radiator/Hose/Radiator filler cap
55555 55 25CO-12
Thermostat 5CO-23
Water pumpCO-21
Water galleryCO-7
Cooling fan 5CO-19
Coolant level (low)/Contaminated
coolantCO-9
NATS (Nissan Anti-theft System) 1 1EC-64 or
BL-108
SYMPTOM
Reference
page
HARD/NO START/RESTART (EXCP. HA)
ENGINE STALL
HESITATION/SURGING/FLAT SPOT
SPARK KNOCK/DETONATION
LACK OF POWER/POOR ACCELERATION
HIGH IDLE/LOW IDLE
ROUGH IDLE/HUNTING
IDLING VIBRATION
SLOW/NO RETURN TO IDLE
OVERHEATS/WATER TEMPERATURE HIGH
EXCESSIVE FUEL CONSUMPTION
EXCESSIVE OIL CONSUMPTION
BATTERY DEAD (UNDER CHARGE)
Warranty symptom code AA AB AC AD AE AF AG AH AJ AK AL AM HA

EC-240
[QR (WITH EURO-OBD)]
DTC P0300 - P0304 MULTIPLE CYLINDER MISFIRE, NO. 1 - 4 CYLINDER MIS-
FIRE

WITH CONSULT-II
1. Turn ignition switch ON, and select “DATA MONITOR” mode
with CONSULT-II.
2. Start engine and warm it up to normal operating temperature.
3. Turn ignition switch OFF and wait at least 10 seconds.
4. Restart engine and let it idle for about 15 minutes.
5. If 1st trip DTC is detected, go to EC-240, "
Diagnostic Procedure"
.
NOTE:
If 1st trip DTC is not detected during above procedure, performing
the following procedure is advised.
1. Turn ignition switch OFF and wait at least 10 seconds.
2. Start engine and drive the vehicle under the similar conditions to (1st trip) Freeze Frame Data for a certain
time. Refer to table below.
Hold the accelerator pedal as steady as possible.
The similar conditions to (1st trip) Freeze Frame Data means the vehicle operation that the following con-
dition should be satisfied at the same time:
The time to driving varies according to the engine speed in the freeze frame data.
Refer to the following table.
WITH GST
Follow the procedure “WITH CONSULT-II” above.
Diagnostic ProcedureEBS010PL
1. CHECK FOR INTAKE AIR LEAK AND PCV HOSE
1. Start engine and run it at idle speed.
2. Listen for the sound of the intake air leak.
3. Check PCV hose connection.
OK or NG
OK >> GO TO 2.
NG >> Repair or replace.
2. CHECK FOR EXHAUST SYSTEM CLOGGING
Stop engine and visually check exhaust tube, three way catalyst and muffler for dents.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace.
PBIB0164E
Engine speed Engine speed in the freeze frame data ± 400 rpm
Vehicle speed Vehicle speed in the freeze frame data ± 10 km/h (6 MPH)
Engine coolant temperature
(T) conditionWhen the freeze frame data shows lower than 70°C (158°F), T should be lower than 70°C (158°F)
When the freeze frame data shows higher than or equal to 70°C (158°F), T should be higher than or
equal to 70°C (158°F)
Engine speed Time
Around 1,000 rpm Approximately 10 minutes
Around 2,000 rpm Approximately 5 minutes
More than 3,000 rpm Approximately 3.5 minutes

EC-266
[QR (WITH EURO-OBD)]
DTC P0420 THREE WAY CATALYST FUNCTION

7. Make sure that the voltage switching frequency (high & low)
between ECM terminal 16 and ground is very less than that of
ECM terminal 35 and ground.
Switching frequency ratio = A/B
A: Heated oxygen sensor 2 voltage switching frequency
B: Heated oxygen sensor 1 voltage switching frequency
This ratio should be less than 0.75.
If the ratio is greater than above, it means three way catalyst
does not operate properly. Go to EC-266, "
Diagnostic Proce-
dure" .
NOTE:
If the voltage at terminal 35 does not switch periodically more than 5
times within 10 seconds at step 7, perform trouble diagnosis for DTC P0133 first. (See EC-186, "
DTC P0133
HO2S1" .)
Diagnostic ProcedureEBS010QB
1. CHECK EXHAUST SYSTEM
Visually check exhaust tubes and muffler for dent.
OK or NG
OK >> GO TO 2.
NG >> Repair or replace.
2. CHECK EXHAUST GAS LEAK
1. Start engine and run it at idle.
2. Listen for an exhaust gas leak before the three way catalyst (manifold).
OK or NG
OK >> GO TO 3.
NG >> Repair or replace.
3. CHECK INTAKE AIR LEAK
Listen for an intake air leak after the mass air flow sensor.
OK or NG
OK >> GO TO 4.
NG >> Repair or replace.
4. CHECK IGNITION TIMING
Check the following items. Refer to EC-79, "
Basic Inspection" .
MBIB0124E
SEC502D
Items Specifications
Target idle speedQR20DE with M/T models 650 ± 50 rpm (in Neutral position)
Except above 700 ± 50 rpm [in P or N (A/T), Neutral (M/T) position]
Ignition timing 15 ± 5° BTDC [in P or N (A/T), Neutral (M/T) position]

TROUBLE DIAGNOSIS
EC-587
[QR (WITHOUT EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
MA
EC

1 - 6: The numbers refer to the order of inspection.Va l v e
mecha-
nismTiming chain
55555 55 5EM-46
CamshaftEM-56
Intake valve timing controlEM-46
Intake valve
3EM-70
Exhaust valve
Exhaust Exhaust manifold/Tube/Muffler/
Gasket
55555 55 5EM-25
, EX-
2Three way catalyst
Lubrica-
tionOil pan/Oil strainer/Oil pump/Oil
filter/Oil gallery
55555 55 52EM-27
, LU-
13 , LU-10 ,
LU-5
Oil level (Low)/Filthy oilLU-7
Cooling Radiator/Hose/Radiator filler cap
55555 55 25CO-12
Thermostat 5CO-23
Water pumpCO-21
Water galleryCO-7
Cooling fan 5CO-19
Coolant level (low)/Contaminated
coolantCO-9
NATS (Nissan Anti-theft System) 1 1EC-567 or
BL-108
SYMPTOM
Reference
page
HARD/NO START/RESTART (EXCP. HA)
ENGINE STALL
HESITATION/SURGING/FLAT SPOT
SPARK KNOCK/DETONATION
LACK OF POWER/POOR ACCELERATION
HIGH IDLE/LOW IDLE
ROUGH IDLE/HUNTING
IDLING VIBRATION
SLOW/NO RETURN TO IDLE
OVERHEATS/WATER TEMPERATURE HIGH
EXCESSIVE FUEL CONSUMPTION
EXCESSIVE OIL CONSUMPTION
BATTERY DEAD (UNDER CHARGE)
Warranty symptom code AA AB AC AD AE AF AG AH AJ AK AL AM HA

EX-2
EXHAUST SYSTEM

EXHAUST SYSTEMPFP:20100
Checking Exhaust SystemEBS00AZ6
Check exhaust pipes, muffler and mounting for improper attachment,
leaks, cracks, damage or deterioration.

If anything is found, repair or replace damaged parts.
Removal and InstallationEBS003DN
CAUTION:

Be sure to use genuine exhaust system parts or equivalents which are specially designed for heat
resistance, corrosion resistance and shape.

Perform the operation with the exhaust system fully cooled down because the system will be hot
just after engine stops.

Be careful not to cut your hand on the insulator edge.
QR20DE and QR25DE
SMA211A
PBIC3627E

EXHAUST SYSTEM
EX-3
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*: In regard to the notation of torque in the figure, “NEW” shows an ISO standard, “OLD” shows a conventional standard, and the mea-
surements of hexagonal width across flats are in parentheses.
YD22DDTi
*: In regard to the notation of torque in the figure, “NEW” shows an ISO standard, “OLD” shows a conventional standard, and the mea-
surements of hexagonal width across flats are in parentheses.
REMOVAL
Separate each connection as necessity.
INSTALLATION
Note the following, and install in the reverse order of removal.
CAUTION:

Always replace exhaust gaskets and seal bearings with new ones when reassembling.

If insulator is badly deformed, repair or replace it. If deposits such as mud pile up on insulator,
remove them.

When installing insulator avoid large gaps or interference between insulator and each exhaust
pipe.

Remove deposits from the sealing surface of each connection. Connect them securely to avoid
gas leakage.
1. Main muffler 2. Mounting rubber 3. Spring
4. Gasket 5. Three way catalyst 6. Exhaust front tube
7. Seal bearing 8. Mounting rubber bracket 9. Mounting bracket
10. Exhaust center tube
PBIC3628E
1. Main muffler 2. Mounting rubber 3. Spring
4. Ring gasket 5. Exhaust tube 6. Exhaust front tube
7. Mounting bracket 8. Mounting rubber bracket 9. Mounting bracket
10. Exhaust center tube 11. Gasket 12. Seal bearing

EX-4
EXHAUST SYSTEM


Temporarily tighten mounting nuts on the exhaust manifold side and mounting bolts on the vehi-
cle side. Check each part for unusual interference, and then tighten them to the specified torque.

When installing each mounting rubber, avoid twisting or unusual extension in up/down and right/
left directions.

Install seal bearings at exhaust front tube and main muffler as follows.
CAUTION:
Do not mix the bolt and spring for seal bearing as the dimension is different for each seal bearing.
Exhaust Front Tube Side (QR20DE and QR25DE)
Insert seal bearing in the direction shown in the figure.
CAUTION:
Tighten mounting bolt without causing interference with
exhaust front tube flange.
Main Muffler Side (QR20DE, QR25DE and YD22DDTi)
Insert seal bearing in the direction shown in the figure.
CAUTION:
Tighten mounting bolt without causing interference with main
muffler flange.
INSPECTION AFTER INSTALLATION

With the engine running, check exhaust tube joints for gas leakage and unusual noises.

Check to ensure that mounting brackets and mounting rubbers are installed properly and free from undue
stress. Improper installation could result in excessive noise and vibration.
PBIC2274E
PBIC2275E

SERVICE DATA AND SPECIFICATIONS (SDS)
EX-5
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SERVICE DATA AND SPECIFICATIONS (SDS)PFP:00030
Tightening TorqueEBS00KP4
QR20DE AND QR25DE
Unit: N·m (kg-m, ft-lb)
YD22DDTI
Unit: N·m (kg-m, ft-lb) Exhaust system connections
Exhaust manifold three way catalyst assembly to exhaust
front tube Conventional bolt 49.0 (5.0, 36)
Exhaust front tube to three way catalyst Conventional nut 57.9 (5.9, 43)
ISO nut 45.0 (4.6, 33)
Three way catalyst to exhaust center tube Conventional nut 57.9 (5.9, 43)
ISO nut 45.0 (4.6, 33)
Exhaust center tube to main muffler Conventional bolt 49.0 (5.0, 36)
Mounting bolts and nuts14.2 (1.4, 10)
Exhaust system connections
Catalyst rear diffuser to exhaust front tube 64.7 (6.6, 48)
Exhaust front tube to exhaust tube Conventional nut 57.9 (5.9, 43)
ISO nut 45.0 (4.6, 33)
Exhaust tube to exhaust center tube Conventional nut 57.9 (5.9, 43)
ISO nut 45.0 (4.6 ,33)
Exhaust center tube to main muffler Conventional bolt 49.0 (5.0, 36)
Mounting bolts and nuts 14.2 (1.4, 10)