2001 NISSAN X-TRAIL oil

EC-1078
[QR20(WITH EURO-OBD)]
IGNITION SIGNAL
4. CHECK IGNITION COIL POWER SUPPLY CIRCUIT-I
1. Turn ignition switch ON.
2. Check voltage between ECM terminals 109, 111 and ground
with CONSULT-II or tester.
OK or NG
OK >> GO TO 5.
NG >> Go to EC-848, "
POWER SUPPLY CIRCUIT FOR ECM"
.
5. CHECK IGNITION COIL POWER SUPPLY CIRCUIT-II
Check voltage between ECM terminal 12 and ground with CON-
SULT-II or tester.
OK or NG
OK >> GO TO 10.
NG >> GO TO 6.
6. CHECK IGNITION COIL POWER SUPPLY CIRCUIT-III
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Disconnect ECM relay.
4. Check harness continuity between ECM terminal 12 and ECM
relay terminal 7. Refer to Wiring Diagram.
5. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 7.
NG >> Repair open circuit or short to ground or short to power
in harness or connectors.
7. CHECK IGNITION COIL POWER SUPPLY CIRCUIT-IV
Check voltage between ECM relay terminal 6 and ground with CON-
SULT-II or tester.
OK or NG
OK >> GO TO 9.
NG >> GO TO 8.Voltage: Battery voltage
PBIB0580E
Voltage: Battery voltage
PBIB0136E
Continuity should exist.
PBIB0493E
Voltage: Battery voltage
PBIB0581E

EC-1080
[QR20(WITH EURO-OBD)]
IGNITION SIGNAL
12. CHECK IGNITION COIL POWER SUPPLY CIRCUIT-V
1. Turn ignition switch OFF.
2. Reconnect all harness connectors disconnected.
3. Disconnect ignition coil harness connector.
4. Turn ignition switch ON.
5. Check voltage between ignition coil terminal 1 and ground with
CONSULT-II or tester.
OK or NG
OK >> GO TO 14.
NG >> GO TO 13.
13. DETECT MALFUNCTIONING PART
Check the following.
●Harness for open or short between ignition coil and ECM relay
●Harness for open or short between ignition coil and ECM
>> Repair or replace harness or connectors.
14. CHECK IGNITION COIL GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Check harness continuity between ignition coil terminal 2 and engine ground.
Refer to Wiring Diagram.
3. Also check harness for short to power.
OK or NG
OK >> GO TO 15.
NG >> Repair open circuit or short to power in harness or connectors.
PBIB0509E
Voltage: Battery voltage
SEF107S
Continuity should exist.

IGNITION SIGNAL
EC-1081
[QR20(WITH EURO-OBD)]
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EC
15.CHECK IGNITION COIL OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Disconnect ECM harness connector.
2. Check harness continuity between ECM terminals 21, 22, 23, 24 and ignition coil terminal 3.
Refer to Wiring Diagram.
3. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 16.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
16.CHECK IGNITION COIL WITH POWER TRANSISTOR
Refer to EC-1081, "
Component Inspection" .
OK or NG
OK >> GO TO 17.
NG >> Replace ignition coil with power transistor.
17.CHECK INTERMITTENT INCIDENT
Refer to EC-847, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>>INSPECTION END
Component InspectionEBS00N1V
IGNITION COIL WITH POWER TRANSISTOR
1. Turn ignition switch “OFF”.
2. Disconnect ignition coil harness connector.
3. Check resistance between ignition coil terminals as follows.
CONDENSER
1. Turn ignition switch “OFF”.
2. Disconnect condenser harness connector.
3. Check resistance between condenser terminals as 1 and 2.Continuity should exist.
Terminal No. (Polarity) Resistance Ω [at 25°C (77°F)]
3 (+) - 2 (-) Except 0 or ∞
1 (+) - 3 (-)
Except 0
1 (+) - 2 (-)
SEF371Q
Resistance: Above 1 MΩ at 25°C (77°F)
SEF124Y

EC-1082
[QR20(WITH EURO-OBD)]
IGNITION SIGNAL
Removal and Installation
EBS00N1W
IGNITION COIL WITH POWER TRANSISTOR
Refer to EM-29, "IGNITION COIL" .

INJECTOR CIRCUIT
EC-1083
[QR20(WITH EURO-OBD)]
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EC
INJECTOR CIRCUITPFP:16600
Component DescriptionEBS00N1X
The fuel injector is a small, precise solenoid valve. When the ECM
supplies a ground to the injector circuit, the coil in the injector is
energized. The energized coil pulls the needle valve back and allows
fuel to flow through the injector into the intake manifold. The amount
of fuel injected depends upon the injection pulse duration. Pulse
duration is the length of time the injector remains open. The ECM
controls the injection pulse duration based on engine fuel needs.
CONSULT-II Reference Value in Data Monitor ModeEBS00N1Y
Specification data are reference values.
ECM Terminals and Reference ValueEBS00N1Z
Specification data are reference values and are measured between each terminal and ground.
Pulse signal is measured by CONSULT-II
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.)
SEF375Z
MONITOR ITEM CONDITION SPECIFICATION
B/FUEL SCHDL
●Engine: After warming up
●Shift lever: N
●Air conditioner switch: OFF
●No-loadIdle 2.5 - 3.5 msec
2,000 rpm 2.5 - 3.5 msec
INJ PULSE-B1
●Engine: After warming up
●Shift lever: N
●Air conditioner switch: OFF
●No-loadIdle 2.0 - 3.0 msec
2,000 rpm 1.9 - 2.9 msec
TER-
MINAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
101
102
103
104R/B
Y/B
G/B
L/BInjector No. 1
Injector No. 2
Injector No. 3
Injector No. 4[Engine is running]
●Warm-up condition
●Idle speedBATTERY VOLTAGE
(11 - 14V)
[Engine is running]
●Warm-up condition
●Engine speed is 2,000 rpmBATTERY VOLTAGE
(11 - 14V)
PBIB0529E
PBIB0530E

EC-1122
[QR20(WITHOUT EURO-OBD)]
PRECAUTIONS
●Do not disassemble ECM.
●If a battery terminal is disconnected, the memory will return
to the ECM value.
The ECM will now start to self-control at its initial value.
Engine operation can vary slightly when the terminal is dis-
connected. However, this is not an indication of a malfunc-
tion. Do not replace parts because of a slight variation.
●When connecting ECM harness connector, fasten it
securely with a lever as far as it will go as shown at right.
●When connecting or disconnecting pin connectors into or
from ECM, take care not to damage pin terminals (bend or
break).
Make sure that there are not any bends or breaks on ECM
pin terminal, when connecting pin connectors.
●Securely connect ECM harness connectors.
A poor connection can cause an extremely high (surge)
voltage to develop in coil and condenser, thus resulting in
damage to ICs.
●Keep engine control system harness at least 10 cm (4 in)
away from adjacent harness, to prevent engine control sys-
tem malfunctions due to receiving external noise, degraded
operation of ICs, etc.
●Keep engine control system parts and harness dry.
●Before replacing ECM, perform “ECM Terminals and Refer-
ence Value” inspection and make sure ECM functions prop-
erly. Refer to EC-1166
.
●Handle mass air flow sensor carefully to avoid damage.
●Do not disassemble mass air flow sensor.
●Do not clean mass air flow sensor with any type of deter-
gent.
●Do not disassemble electric throttle control actuator.
●Even a slight leak in the air intake system can cause seri-
ous incidents.
●Do not shock or jar the camshaft position sensor (PHASE),
crankshaft position sensor (POS).
SEF707Y
SEF908W
PBIB0090E
MEF040D

BASIC SERVICE PROCEDURE
EC-1135
[QR20(WITHOUT EURO-OBD)]
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EC
BASIC SERVICE PROCEDUREPFP:00018
Idle Speed and Ignition Timing CheckEBS00N3M
IDLE SPEED
With CONSULT-II
Check idle speed in “DATA MONITOR” mode with CONSULT-II.
Without CONSULT-II
Check the idle speed by installing the pulse type tachometer clamp on the loop wire or on suitable high-tension
wire which installed between No.1 ignition coil and No.1 spark plug.
NOTE:
For the method of installing the tachometer, EC-1135, "
IGNITION TIMING" .
IGNITION TIMING
Any of following two methods may be used.
●Method A
–Attach timing light to loop wire as shown.
–Check ignition timing.
●Method B
–Remove No. 1 ignition coil.
SEF058Y
PBIB0515E
PBIB0509E

EC-1136
[QR20(WITHOUT EURO-OBD)]
BASIC SERVICE PROCEDURE
–Connect No. 1 ignition coil and No. 1 spark plug with suitable
high-tension wire as shown, and attach timing light clamp to this
wire.
–Check ignition timing.
Accelerator Pedal Released Position LearningEBS00N3O
DESCRIPTION
“Accelerator Pedal Released Position Learning” is an operation to learn the fully released position of the accel-
erator pedal by monitoring the accelerator pedal position sensor output signal. It must be performed each time
harness connector of accelerator pedal position sensor or ECM is disconnected.
OPERATION PROCEDURE
1. Make sure that accelerator pedal is fully released.
2. Turn ignition switch “ON” and wait at least 2 seconds.
3. Turn ignition switch “OFF” wait at least 10 seconds.
4. Turn ignition switch “ON” and wait at least 2 seconds.
5. Turn ignition switch “OFF” wait at least 10 seconds.
Throttle Valve Closed Position LearningEBS00N3N
DESCRIPTION
“Throttle Valve Closed Position Learning” is an operation to learn the fully closed position of the throttle valve
by monitoring the throttle position sensor output signal. It must be performed each time harness connector of
electric throttle control actuator or ECM is disconnected.
OPERATION PROCEDURE
1. Make sure that accelerator pedal is fully released.
2. Turn ignition switch “ON” wait at least 10 seconds.
PBIB0516E
SEF166Y
PBIB0514E