NISSAN X-TRAIL 2001 Service Repair Manual

IGNITION SIGNAL
EC-1081
[QR20(WITH EURO-OBD)]
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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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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-1084
[QR20(WITH EURO-OBD)]
INJECTOR CIRCUIT
Wiring Diagram
EBS00N20
TBWA0082E

INJECTOR CIRCUIT
EC-1085
[QR20(WITH EURO-OBD)]
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Diagnostic ProcedureEBS00N21
1.INSPECTION START
Turn ignition switch to “START”.
Is any cylinder ignited?
Ye s o r N o
Ye s > > G O T O 2 .
No >> GO TO 3.
2.CHECK OVERALL FUNCTION
With CONSULT-II
1. Start engine.
2. Perform “POWER BALANCE” in “ACTIVE TEST” mode with
CONSULT-II.
3. Make sure that each circuit produces a momentary engine
speed drop.
Without CONSULT-II
1. Start engine.
2. Listen to each injector operating sound.
Clicking noise should be heard.
OK or NG
OK >>INSPECTION END
NG >> GO TO 3.
PBIB0133E
MEC703B

EC-1086
[QR20(WITH EURO-OBD)]
INJECTOR CIRCUIT
3. CHECK INJECTOR POWER SUPPLY CIRCUIT
1. Turn ignition switch “OFF”.
2. Disconnect injector harness connector.
3. Turn ignition switch “ON”.
4. Check voltage between injector terminal 1 and ground with
CONSULT-II or tester.
OK or NG
OK >> GO TO 5.
NG >> GO TO 4.
4. DETECT MALFUNCTIONING PART
Check the following.
●Harness connectors M61, F41
●Harness connectors F1, F101
●Fuse block (J/B) connector M1
●10A fuse
●Harness for open or short between injector and fuse
>> Repair harness or connectors.
5. CHECK INJECTOR OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch “OFF”.
2. Disconnect ECM harness connector.
3. Check harness continuity between injector terminal 2 and ECM terminals 101, 102, 103, 104.
Refer to Wiring Diagram.
4. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 7.
NG >> GO TO 6.
PBIB0510E
Voltage: Battery voltage
PBIB0582E
Continuity should exist.

INJECTOR CIRCUIT
EC-1087
[QR20(WITH EURO-OBD)]
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6.DETECT MALFUNCTIONING PART
Check the following.
●Harness connectors F1, F101
●Harness for open or short between injector and ECM
>> Repair open circuit or short to ground or short to power in harness or connectors.
7.CHECK INJECTOR
Refer to EC-1087, "
Component Inspection" .
OK or NG
OK >> GO TO 8.
NG >> Replace injector.
8.CHECK INTERMITTENT INCIDENT
Refer to EC-847, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>>INSPECTION END
Component InspectionEBS00N22
INJECTOR
1. Disconnect injector harness connector.
2. Check resistance between terminals as shown in the figure.
Removal and InstallationEBS00N23
INJECTOR
Refer to EM-32, "FUEL INJECTOR AND FUEL TUBE" . Resistance: 13.5 - 17.5Ω [at 20°C (68°F)]
PBIB0181E

EC-1088
[QR20(WITH EURO-OBD)]
START SIGNAL
START SIGNAL
PFP:48750
CONSULT-II Reference Value in Data Monitor ModeEBS00N24
Specification data are reference values.
ECM Terminals and Reference ValueEBS00N25
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.
MONITOR ITEM CONDITION SPECIFICATION
START SIGNAL
●Ignition switch: ON → START → ON OFF → ON → OFF
TER-
MINAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
41 B/Y Start signal[Ignition switch “ON”]Approximately 0V
[Ignition switch “START”]9 - 14V

START SIGNAL
EC-1089
[QR20(WITH EURO-OBD)]
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Wiring DiagramEBS00N26
TBWA0085E

EC-1090
[QR20(WITH EURO-OBD)]
START SIGNAL
Diagnostic Procedure
EBS00N27
1. INSPECTION START
Do you have CONSULT-II?
Ye s o r N o
Yes >> GO TO 2.
No >> GO TO 3.
2. CHECK OVERALL FUNCTION
With CONSULT-II
1. Turn ignition switch “ON”.
2. Check “START SIGNAL” in “DATA MONITOR” mode with CON-
SULT-II under the following conditions.
OK or NG
OK >>INSPECTION END
NG >> GO TO 4.
3. CHECK OVERALL FUNCTION
Without CONSULT-II
Check voltage between ECM terminal 41 and ground under the fol-
lowing conditions.
OK or NG
OK >>INSPECTION END
NG >> GO TO 4.
4. CHECK STARTING SYSTEM
Turn ignition switch “OFF”, then turn it to “START”.
Does starter motor operate?
Ye s o r N o
Yes >> GO TO 5.
No >> Refer to SC-20, "
STARTING SYSTEM" .
5. CHECK FUSE
1. Turn ignition switch “OFF”.
2. Disconnect 10A fuse.
3. Check if 10A fuse is OK.
OK or NG
OK >> GO TO 6.
NG >> Replace 10A fuse.
Condition START SIGNAL
Ignition switch "ON" OFF
Ignition switch "START" ON
PBIB0182E
Condition Voltage
Ignition switch "START" Battery voltage
Other positions Approximately 0V
PBIB0583E