engine NISSAN X-TRAIL 2003 Service Repair Manual

EC-906
[YD (WITH EURO-OBD)]
TROUBLE DIAGNOSIS

1. INSPECTION START
1. Check service records for any recent repairs that may indicate a related incident.
2. Check the current need for scheduled maintenance, especially for fuel filter and air cleaner filter. Refer to
MA-7, "
PERIODIC MAINTENANCE" .
3. Open engine hood and check the following:
–Harness connectors for improper connections
–Vacuum hoses for splits, kinks, or improper connections
–Wiring for improper connections, pinches, or cuts
4. Start engine and warm it up to the normal operating tempera-
ture.
>> GO TO 2.
2. PREPARATION FOR CHECKING IDLE SPEED
With CONSULT-II
Connect CONSULT-II to the data link connector.
>> GO TO 3.
3. CHECK IDLE SPEED
With CONSULT-II
1. Select “CKPS·RPM (TDC)” in “DATA MONITOR” mode with CONSULT-II.
2. Read idle speed.
OK or NG
OK >>INSPECTION END
NG >> GO TO 4.
4. CHECK FOR INTAKE AIR LEAK
Listen for an intake air leak after the mass air flow sensor.
OK or NG
OK >> GO TO 5.
NG >> Repair or replace.
SEF142I
725±25 rpm
SEF817Y

TROUBLE DIAGNOSIS
EC-907
[YD (WITH EURO-OBD)]
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EC

5. BLEED AIR FROM FUEL SYSTEM
1. Stop engine.
2. Use priming pump to bleed air from fuel system. Refer to EC-890, "
AIR BLEEDING" .
>> GO TO 6.
6. CHECK IDLE SPEED AGAIN
With CONSULT-II
1. Start engine and let it idle.
2. Select “CKPS·RPM (TDC)” in “DATA MONITOR” mode with CONSULT-II.
3. Read idle speed.
OK or NG
OK >>INSPECTION END
NG >> GO TO 7.
7. DRAIN WATER FROM FUEL FILTER
Drain water from fuel filter. Refer to EC-890, "
WATER DRAINING" .
>> GO TO 8.
8. CHECK IDLE SPEED AGAIN
With CONSULT-II
1. Start engine and let it idle.
2. Select “CKPS·RPM (TDC)” in “DATA MONITOR” mode with CONSULT-II.
3. Read idle speed.
OK or NG
OK >>INSPECTION END
NG >> GO TO 9.
9. CHECK AIR CLEANER FILTER
Check air cleaner filter for clogging or breaks.
OK or NG
OK >> GO TO 10.
NG >> Replace air cleaner filter.725±25 rpm
SEF817Y
725±25 rpm
SEF817Y

EC-908
[YD (WITH EURO-OBD)]
TROUBLE DIAGNOSIS

10. CHECK BATTERY VOLTAGE
Check battery voltage.
OK or NG
OK >> GO TO 12.
NG >> GO TO 11.
11 . CHECK BATTERY
Refer to SC-3, "
BATTERY" .
OK or NG
OK >> Check charging system. Refer to SC-12 .
NG >> Repair or replace.
12. CHECK COMPRESSION PRESSURE
Check compression pressure. Refer to EM-196, "
CHECKING COMPRESSION PRESSURE" .
OK or NG
OK >> GO TO 11.
NG >> Follow the instruction of “CHECKING COMPRESSION PRESSURE”.
13. CHECK IDLE SPEED AGAIN
With CONSULT-II
1. Start engine and let it idle.
2. Select “CKPS·RPM (TDC)” in “DATA MONITOR” mode with CONSULT-II.
3. Read idle speed.
OK or NG
OK >>INSPECTION END
NG >> 1. Replace fuel injector.
2. GO TO 3. Voltage: More than 12.13V
725±25 rpm
SEF817Y

TROUBLE DIAGNOSIS
EC-909
[YD (WITH EURO-OBD)]
C
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EC

Symptom Matrix ChartEBS0117B
SYSTEM — Basic engine control systemSYMPTOM
Reference page
HARD/NO START/RESTART (EXCP. HA) ENGINE STALL HESITATION/SURGING/FLAT SPOT KNOCK/DETONATION
LACK OF POWER POOR ACCELERATION HI IDLE LOW IDLE
NO START (with first firing) NO START (without first firing) HARD TO START WHEN ENGINE IS COLD HARD TO START WHEN ENGINE IS HOT
AT I D L E DURING DRIVING WHEN DECELERATING
Warranty symptom code AA AB AC AD AE AF
Fuel pump 55555555 55 5 —
Fuel injector 3333333334433EC-1005
Glow control system 1 1 1 1 1EC-1169
Engine body 3333333 344 3EM-208
Fuel transport pump 2 2 2EC-1190
EGR system33EC-1073
Air cleaner and duct33EM-133
Fuel rail pressure relief valveEC-959
ENGINE CONTROLFuel pump circuit 4 4 4 4 4 4 4 4 4 4 4EC-1093
Fuel injector circuit 1111111111111EC-1005
Mass air flow sensor circuit 1 1 1EC-970
Engine coolant temperature circuit 1 1 1 1EC-981
Vehicle speed signal circuit1LAN-4
Accelerator pedal position sensor circuit 1 1 1EC-987
Fuel rail pressure sensor circuitEC-997

EC-910
[YD (WITH EURO-OBD)]
TROUBLE DIAGNOSIS

1 - 5: The numbers refer to the order of inspection.
(continued on next page)
ENGINE CONTROL
Crankshaft position sensor circuit 1 1 1 1 1 1 1 1 1 1EC-1044
Camshaft position sensor circuit 3 3EC-1056
Turbocharger boost sensor circuit 1 1 1EC-1038
Turbocharger boost control solenoid
valve circuit111EC-949
Start signal circuit 1 1 1 1 1 1 1 1 1EC-1199
Ignition switch circuit 1 1 1 1EC-937
Power supply for ECM circuit 1 1 1 1EC-937
Cooling fan relay circuitEC-1011
EGR volume control valve circuit 1 1 1EC-1080
Glow relay circuit 1 1 1 1EC-1069
ECM relay (Self-shutoff) circuit 1 1 1 1E C - 111 0
ECM, connector circuit 2 2 2 2 2 2 2 2 2 2 2 2 2EC-1089,
EC-1167
NATS (Nissan Anti-theft System) 1EC-896
SYSTEM — Basic engine control systemSYMPTOM
Reference page
HARD/NO START/RESTART (EXCP. HA) ENGINE STALL HESITATION/SURGING/FLAT SPOT KNOCK/DETONATION LACK OF POWER POOR ACCELERATION HI IDLE
LOW IDLE
NO START (with first firing) NO START (without first firing)
HARD TO START WHEN ENGINE IS COLD HARD TO START WHEN ENGINE IS HOT AT I D L E DURING DRIVING WHEN DECELERATING
Warranty symptom code AA AB AC AD AE AF

TROUBLE DIAGNOSIS
EC-911
[YD (WITH EURO-OBD)]
C
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EC

SYSTEM — Basic engine control systemSYMPTOM
Reference page
ROUGH IDLE/HUNTING IDLING VIBRATION
SLOW/NO RETURN TO IDLE OVERHEAT/HIGH ENGINE COOLANT TEMPERATURE EXCESSIVE FUEL CONSUMPTION
EXCESSIVE OIL CONSUMPTION ABNORMAL SMOKE COLOR DEAD BATTERY (UNDER CHARGE) Malfunction indicator illuminates. Can be detected by CONSULT-II?
BLACK SMOKE WHITE SMOKE
Warranty symptom code AG AH AJ AK AL AM AP HA
Fuel pump 5 5 5 5 1 1 —
Fuel injector 33344411EC-1005
Glow control system1EC-1169
Engine body 3 3 3 3 1 3EM-208
Fuel transport pumpEC-1190
EGR system3EC-1073
Air cleaner and duct3EM-133
Fuel rail pressure relief valveEC-959
ENGINE CONTROLFuel pump circuit 4 4 4 4 1 1EC-1134
Fuel injector circuit 1 1 1 1 1 1 1 1EC-1005
Mass air flow sensor circuit 1 1 1EC-970
Engine coolant temperature circuit 1 1 1 1 1EC-981
Vehicle speed signal circuit11LAN-4
Accelerator pedal position sensor circuit 1 1 1EC-987
Fuel rail pressure sensor circuit11EC-997

EC-912
[YD (WITH EURO-OBD)]
TROUBLE DIAGNOSIS

1 - 5: The numbers refer to the order of inspection.
ENGINE CONTROLCrankshaft position sensor circuit 1 1 1 1EC-1044
Camshaft position sensor circuit11EC-1056
Turbocharger boost sensor circuit 1 1EC-1038
Turbocharger boost control solenoid valve cir-
cuit11EC-949
Start signal circuitEC-1199
Ignition switch circuitEC-937
Power supply for ECM circuit11EC-937
Cooling fan relay circuit 2EC-1011
EGR volume control valve circuit 1EC-1080
Glow relay circuit1EC-1069
ECM relay (Self-shutoff) circuit1E C - 111 0
ECM, connector circuit22222222222EC-1089,EC-
1167
NATS (Nissan Anti-theft System)1EC-896
SYSTEM — Basic engine control systemSYMPTOM
Reference page
ROUGH IDLE/HUNTING IDLING VIBRATION
SLOW/NO RETURN TO IDLE
OVERHEAT/HIGH ENGINE COOLANT TEMPERATURE EXCESSIVE FUEL CONSUMPTION EXCESSIVE OIL CONSUMPTION ABNORMAL SMOKE COLOR
DEAD BATTERY (UNDER CHARGE) Malfunction indicator illuminates.
Can be detected by CONSULT-II?
BLACK SMOKE WHITE SMOKE
Warranty symptom code AG AH AJ AK AL AM AP HA

TROUBLE DIAGNOSIS
EC-913
[YD (WITH EURO-OBD)]
C
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MA
EC

Engine Control Component Parts LocationEBS0117C
PBIB1888E

TROUBLE DIAGNOSIS
EC-919
[YD (WITH EURO-OBD)]
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EC

ECM Harness Connector Terminal LayoutEBS0117E
ECM Terminals And Reference ValueEBS0117F
PREPARATION
1. ECM is located behind the glove box. For this inspection,
remove glove box.
2. Remove ECM harness protector.
3. When disconnecting ECM harness connector, loosen it with
levers as far as they will go as shown in the figure.
4. Connect a break-out box (SST) and Y-cable adapter (SST)
between the ECM and ECM harness connector.

Use extreme care not to touch 2 pins at one time.

Data is for comparison and may not be exact.
ECM INSPECTION TABLE
Remarks: Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
MBIB0045E
PBIB1899E
PBIB1512E
TERMI-
NAL
NO.WIRE
COLORITEM CONDITIONDATA
(DC Voltage and Pulse Signal)
1
2
3B
B
BECM ground[Engine is running]

Idle speedApproximately 0V

EC-920
[YD (WITH EURO-OBD)]
TROUBLE DIAGNOSIS

4
5W/B
G/BFuel injector power supply
(For cylinder No. 1 and 4)
Fuel injector power supply
(For cylinder No. 2 and 3)[Engine is running]

Warm-up condition

Idle speed5 - 10V
[Engine is running]

Warm-up condition

Engine speed is 2,000 rpm5 - 10V
6LTurbocharger boost control
solenoid valve[Ignition switch ON]

Warm-up condition

Idle speed0 - 12.5V
[Ignition switch ON]

Warm-up condition

Engine speed is 2,000 rpm0 - 12.5V
10 Y/L Fuel pump power supply[Engine is running]

Warm-up condition

Idle speed0 - 12.5V
[Engine is running]

Warm-up condition

Engine speed is 2,000 rpm0 - 12.5V
14 W/PU Fuel level switch[Ignition switch ON]

Some fuel is in the fuel tankApproximately 0V
[Ignition switch ON]

No fuel is in the fuel tankBATTERY VOLTAGE
(11 - 14V) TERMI-
NAL
NO.WIRE
COLORITEM CONDITIONDATA
(DC Voltage and Pulse Signal)
MBIB0883E
MBIB0884E
MBIB0889E
MBIB0890E
MBIB0885E
MBIB0886E