NISSAN X-TRAIL 2003 Electronic Repair Manual

DTC P0011 IVT CONTROL
EC-117
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DTC P0011 IVT CONTROLPFP:23796
DescriptionEBS00B1Y
SYSTEM DESCRIPTION
This mechanism hydraulically controls cam phases continuously with the fixed operating angle of the intake
valve.
The ECM receives signals such as crankshaft position, camshaft position, engine speed, and engine coolant
temperature. Then, the ECM sends ON/OFF pulse duty signals to the intake valve timing control solenoid
valve depending on driving status. This makes it possible to control the shut/open timing of the intake valve to
increase engine torque in low/mid speed range and output in high-speed range.
CONSULT-II Reference Value in Data Monitor ModeEBS00B1Z
Specification data are reference values.
ECM Terminals and Reference ValueEBS00B20
Specification data are reference values and are measured between each terminal and body 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.
Sensor Input signal to ECM function ECM Actuator
Crankshaft position sensor (POS)
Engine speed
Intake valve
timing controlIntake valve timing control
solenoid valve Camshaft position sensor (PHASE)
Engine coolant temperature sensor Engine coolant temperature
Wheel sensor Vehicle speed
PBIB0540E
MONITOR ITEM CONDITION SPECIFICATION
INT/V TIM (B1)
lEngine: After warming up
lShiftlever:N
lAir conditioner switch: OFF
lNo-loadIdle-5°-5°CA
When revving engine up to 2,000 rpm
quicklyApprox. 0°-20°CA
INT/V SOL (B1)
lEngine: After warming up
lShiftlever:N
lAir conditioner switch: OFF
lNo-loadIdle 0% - 2%
When revving engine up to 2,000 rpm
quicklyApprox. 0% - 50%

EC-118
[QR (WITH EURO-OBD)]
DTC P0011 IVT CONTROL
: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)
On Board Diagnosis LogicEBS00B21
FAIL -S AFE M OD E
When the malfunction is detected, the ECM enters fail-safe mode and the MI lights up.
DTC Confirmation ProcedureEBS00B22
CAUTION:
Always drive at a safe speed.
NOTE:
lIf DTC P0011 is displayed with DTC P1111, first perform trouble diagnosis for "DTC P1111". See
EC-266
.
lIf "DTC Confirmation Procedure" has been previously conducted, always turn ignition switch "OFF" and
wait at least 10 seconds before conducting the next test.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is between 10V and 16V at
idle.
WITH CONSULT-II
1. Turn ignition switch "ON".
TER-
MINAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
107 Y/RIntake valve timing
control solenoid valve[Engine is running]
lWarm-up condition
lIdle speedBATTERY VOLTAGE
(11 - 14V)
[Engine is running]
lWarm-up condition
lWhen revving engine up to 2,000 rpm quicklyApproximately 4V - BATTERY
VOLTAGE (11 - 14V)
PBIB0532E
DTC No.Trouble diagnosis
nameDetecting condition Possible cause
P0011
0011Intake valve timing
control performanceThere is a gap between angle of target and
phase-control angle degree.
lCrankshaft position sensor (POS)
lCamshaft position sensor (PHASE)
lAccumulation of debris to the signal pick-up
portion of the camshaft
Detected items Engine operating condition in fail-safe mode
Intake valve timing control The signal is not energized to the solenoid valve and the valve control does not function

DTC P0011 IVT CONTROL
EC-119
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EC
2. Select "DATA MONITOR" mode with CONSULT-II.
3. Maintain the following conditions for at least 20 consecutive sec-
onds.
4. If 1st trip DTC is detected, go toEC-119, "
Diagnostic Procedure"
.
WITH GST
Follow the procedure "With CONSULT-II" above.
Diagnostic ProcedureEBS00B23
1.CHECK CRANKSHAFT POSITION SENSOR (POS)
Refer toEC-221, "
Component Inspection".
OK or NG
OK >> GO TO 2.
NG >> Replace crankshaft position sensor (POS).
2.CHECK CAMSHAFT POSITION SENSOR (PHASE)
Refer toEC-228, "
Component Inspection".
OK or NG
OK >> GO TO 3.
NG >> Replace camshaft position sensor (PHASE).
3.CHECK CAMSHAFT (INTAKE)
Check the following.
lAccumulation of debris to the signal plate of camshaft rear end
lChipping signal plate of camshaft rear end
OK or NG
OK >> GO TO 4.
NG >> Remove debris and clean the signal plate of camshaft
rear end or replace camshaft.
4.CHECK INTERMITTENT INCIDENT
Refer toEC-107, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT".
For wiring diagram refer to CKP sensor (POS)EC-219
and CMP sensor (PHASE)EC-225.
>>INSPECTION END
ENG SPEED 2,000 - 3,175 rpm (A constant rotation is maintained.)
COOLANT TEMPS 80 - 90°C (176 - 194°F)
Selector lever 1st or 2nd position
Driving location uphillDriving vehicle uphill
(Increased engine load will help maintain the driving
conditions required for this test.)
SEF174Y
PBIB0565E

EC-120
[QR (WITH EURO-OBD)]
DTC P0031, P0032 HO2S1 HEATER
DTC P0031, P0032 HO2S1 HEATER
PFP:22690
DescriptionEBS00B24
SYSTEM DESCRIPTION
The ECM performs ON/OFF duty control of the heated oxygen sensor 1 heater corresponding to the engine
speed and engine coolant temperature. The duty percent varies with engine coolant temperature when engine
is started.
OPERATION
CONSULT-II Reference Value in Data Monitor ModeEBS00B25
Specification data are reference values.
ECM Terminals and Reference ValueEBS00B26
Specification data are reference values and are measured between each terminal and body 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.
: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)Sensor Input Signal to ECM ECM function Actuator
Camshaft position sensor (PHASE)
Crankshaft position sensor (POS)Engine speed
Heated oxygen sensor 1
heater controlHeated oxygen sensor 1 heater
Engine coolant temperature sensorEngine coolant tempera-
ture
Engine speed rpm Heated oxygen sensor 1 heater
Above 3,600 OFF
Below 3,600 ON
MONITOR ITEM CONDITION SPECIFICATION
HO2S1 HTR (B1)
lEngine: After warm up
lEngine speed: Below 3,600 rpmON
lEngine speed: Above 3,600 rpm OFF
TER-
MINAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
2P/LHeated oxygen sen-
sor 1 heater[Engine is running]
lWarm-up condition
lEngine speed is below 3,600 rpm.Approximately 7.0V
[Engine is running]
lEngine speed is above 3,600 rpm.BATTERY VOLTAGE
(11 - 14V)
PBIB0519E

DTC P0031, P0032 HO2S1 HEATER
EC-121
[QR (WITH EURO-OBD)]
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On Board Diagnosis LogicEBS00B27
DTC Confirmation ProcedureEBS00B28
NOTE:
If “DTC Confirmation Procedure” has been previously conducted, always turn ignition switch “OFF” and wait at
least 10 seconds before conducting the next test.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is between 10.5V and 16V at
idle.
WITH CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Turn ignition switch "OFF" and wait at least 10 seconds.
3. Turn ignition switch “ON” and select “DATA MONITOR” mode
with CONSULT-II.
4. Start engine and run it for at least 6 seconds at idle speed.
5. f 1st trip DTC is detected, go toEC-123, "
Diagnostic Procedure"
.
WITH GST
1. Start engine and warm it up to normal operating temperature.
2. Turn ignition switch "OFF" and wait at least 10 seconds.
3. Start engine and run it for at least 6 seconds at idle speed.
4. Turn ignition switch “OFF” and wait at least 10 seconds.
5. Start engine and run it for at least 6 seconds at idle speed.
6. Select “MODE 3” with GST.
7. If DTC is detected, go toEC-123, "
Diagnostic Procedure".
lWhen using GST, “DTC Confirmation Procedure” should be performed twice as much as when
using CONSULT-II because GST cannot display MODE 7 (1st trip DTC) concerning this diagnosis.
Therefore, using CONSULT-II is recommended.
DTC No.Trouble diagnosis
nameDTC detecting condition Possible cause
P0031
0031Heated oxygen
sensor 1 heater
control circuit lowThe current amperage in the heated oxygen
sensor 1 heater circuit is out of the normal
range.
(An excessively low voltage signal is sent to
ECM through the heated oxygen sensor 1
heater.)
lHarness or connectors
(The heated oxygen sensor 1 heater circuit is
open or shorted.)
lHeater oxygen sensor 1 heater
P0032
0032Heated oxygen
sensor 1 heater
control circuit highThe current amperage in the heated oxygen
sensor 1 heater circuit is out of the normal
range.
(An excessively high voltage signal is sent to
ECM through the heated oxygen sensor 1
heater.)
lHarness or connectors
(The heated oxygen sensor 1 heater circuit is
shorted.)
lHeater oxygen sensor 1 heater
SEF058Y

EC-122
[QR (WITH EURO-OBD)]
DTC P0031, P0032 HO2S1 HEATER
Wiring Diagram
EBS00B29
TBWA0060E

DTC P0031, P0032 HO2S1 HEATER
EC-123
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Diagnostic ProcedureEBS00B2A
1.CHECK HO2S1 POWER SUPPLY CIRCUIT
1. Turn ignition switch “OFF”.
2. Disconnect heated oxygen sensor 1 harness connector.
3. Turn ignition switch “ON”.
4. Check voltage between HO2S1 terminal 4 and ground with
CONSULT-II or tester.
OK or NG
OK >> GO TO 3.
NG >> GO TO 2.
2.DETECT MALFUNCTIONING PART
Check the following.
lHarness connectors E60, F36
lFuse block (J/B) connector E103
l10A fuse
lHarness for open or short between heated oxygen sensor 1 and fuse
>> Repair harness or connectors.
3.CHECK HO2S1 OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch “OFF”.
2. Disconnect ECM harness connector.
3. Check harness continuity between ECM terminal 2 and HO2S1 terminal 1.
Refer to Wiring Diagram.
4. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 4.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
PBIB0500E
Voltage: Battery voltage
PBIB0541E
Continuity should exist.

EC-124
[QR (WITH EURO-OBD)]
DTC P0031, P0032 HO2S1 HEATER
4.CHECK HEATED OXYGEN SENSOR 1 HEATER
Refer toEC-124, "
Component Inspection".
OK or NG
OK >> GO TO 5.
NG >> Replace heated oxygen sensor 1.
5.CHECK INTERMITTENT INCIDENT
Refer toEC-107, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT".
>>INSPECTION END
Component InspectionEBS00B2B
HEATED OXYGEN SENSOT 1 HEATER
1. Check resistance between HO2S1 terminals as follows.
2. If NG, replace heated oxygen sensor 1.
CAUTION:
Discard any heated oxygen sensor which has been dropped
from a height of more than 0.5 m (19.7 in) onto a hard surface
such as a concrete floor; use a new one.
Removal and InstallationEBS00B2C
HEATED OXYGEN SENSOR 1
Refer toEM-22, "EXHAUST MANIFOLD AND THREE WAY CATALYST".
Terminal No. Resistance
1 and 4 2.3 - 4.3Wat 25°C(77°F)
2 and 3, 4
¥W
(Continuity should not exist)
3 and 1, 2, 4
PBIB0542E

DTC P0037, P0038 HO2S2 HEATER
EC-125
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EC
DTC P0037, P0038 HO2S2 HEATERPFP:226A0
DescriptionEBS00B2D
SYSTEM DESCRIPTION
The ECM performs ON/OFF control of the heated oxygen sensor 2 heater corresponding to the engine speed.
OPERATION
CONSULT-II Reference Value in Data Monitor ModeEBS00B2E
Specification data are reference values.
ECM Terminals and Reference ValueEBS00B2F
Specification data are reference values and are measured between each terminal and body 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.
On Board Diagnosis LogicEBS00B2G
Sensor Input Signal to ECM ECM function Actuator
Camshaft position sensor (PHASE)
Engine speedHeated oxygen sensor 2
heater controlHeated oxygen sensor 2 heater
Crankshaft position sensor (POS)
Engine speed rpm Heated oxygen sensor 2 heater
Above 3,800 OFF
Below 3,800 ON
MONITOR ITEM CONDITION SPECIFICATION
HO2S2 HTR (B1)
lEngine speed: Below 3,800 rpm [After driving for 2 minutes at a speed
of 70 km/h (43 MPH) or more]ON
lEngine speed: Above 3,800 rpm OFF
TER-
MINAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
4PU/RHeated oxygen sen-
sor 2 heater[Engineisrunning]
lEngine speed is below 3,800 rpm.
lAfter driving for 2 minutes at a speed of 70 km/h
(43MPH)ormore.0-1.0V
[Ignition switch “ON”]
lEngine stopped
[Engineisrunning]
lEngine speed is above 3,800 rpm.BATTERY VOLTAGE
(11 - 14V)
DTC No.Trouble diagnosis
nameDTC detecting condition Possible cause
P0037
0037Heated oxygen
sensor 2 heater
control circuit lowThe current amperage in the heated oxygen sen-
sor 2 heater circuit is out of the normal range.
(An excessively low voltage signal is sent to ECM
through the heated oxygen sensor 1 heater.)
lHarness or connectors
(The heated oxygen sensor 1 heater circuit is
open or shorted.)
lHeater oxygen sensor 1 heater
P0038
0038Heated oxygen
sensor 2 heater
control circuit highThe current amperage in the heated oxygen sen-
sor 2 heater circuit is out of the normal range.
(An excessively high voltage signal is sent to
ECM through the heated oxygen sensor 1
heater.)
lHarness or connectors
(The heated oxygen sensor 1 heater circuit is
shorted.)
lHeater oxygen sensor 1 heater

EC-126
[QR (WITH EURO-OBD)]
DTC P0037, P0038 HO2S2 HEATER
DTC Confirmation Procedure
EBS00B2H
NOTE:
If “DTC Confirmation Procedure” has been previously conducted, always turn ignition switch “OFF” and wait at
least 10 seconds before conducting the next test.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is between 10.5V and 16V at
idle.
WITH CONSULT-II
1. Turn ignition switch “ON” and select “DATA MONITOR” mode with CONSULT-II.
2. Start engine.
3. Drive vehicle at a speed of more than 70 km/h (43 MPH) for 2 consecutive minutes.
4. Stop vehicle and let engine idle for at least 6 seconds.
5. If 1st trip DTC is detected, go toEC-128, "
Diagnostic Procedure"
.
WITH GST
1. Start engine.
2. Drive vehicle at a speed of more than 70 km/h (43 MPH) for 2 consecutive minutes.
3. Stop vehicle and let engine idle for at least 6 seconds.
4. Turn ignition switch “OFF” and wait at least 10 seconds.
5. Start engine.
6. Drive vehicle at a speed of more than 70 km/h (43 MPH) for 2 consecutive minutes.
7. Stop vehicle and let engine idle for at least 6 seconds.
8. Select “MODE 3” with GST.
9. If DTC is detected, go toEC-128, "
Diagnostic Procedure".
lWhen using GST, “DTC Confirmation Procedure” should be performed twice as much as when
using CONSULT-II because GST cannot display MODE 7 (1st trip DTC) concerning this diagnosis.
Therefore, using CONSULT-II is recommended.
SEF058Y