Page 857 of 4555
![NISSAN X-TRAIL 2005 Service Repair Manual INJECTOR CIRCUIT
EC-453
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Specification data are reference values and are measured between each terminal and ground.
Pulse signal is measured by CONSULT- NISSAN X-TRAIL 2005 Service Repair Manual INJECTOR CIRCUIT
EC-453
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Specification data are reference values and are measured between each terminal and ground.
Pulse signal is measured by CONSULT-](/manual-img/5/57403/w960_57403-856.png)
INJECTOR CIRCUIT
EC-453
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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.)
Diagnostic ProcedureEBS010VE
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.
TERMI-
NAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
22
23
41
42G/B
R/B
L/B
Y/BInjector No. 3
Injector No. 1
Injector No. 4
Injector No. 2[Engine is running]
Warm-up condition
Idle speed
NOTE:
The pulse cycle changes depending on rpm
at idleBATTERY VOLTAGE
(11 - 14V)
[Engine is running]
Warm-up condition
Engine speed is 2,000 rpmBATTERY VOLTAGE
(11 - 14V)
PBIB0529E
PBIB0530E
Page 858 of 4555
EC-454
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INJECTOR CIRCUIT
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.
OK or NG
OK >>INSPECTION END
NG >> GO TO 3.
PBIB0133E
Clicking noise should be heard.
PBIB1986E
Page 859 of 4555
![NISSAN X-TRAIL 2005 Service Repair Manual INJECTOR CIRCUIT
EC-455
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3. CHECK INJECTOR POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect injector harness connector.
3. Turn ignition NISSAN X-TRAIL 2005 Service Repair Manual INJECTOR CIRCUIT
EC-455
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3. CHECK INJECTOR POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect injector harness connector.
3. Turn ignition](/manual-img/5/57403/w960_57403-858.png)
INJECTOR CIRCUIT
EC-455
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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 open circuit or short to ground or short to power in 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 22, 23, 41, 42.
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.
PBIB1970E
Voltage: Battery voltage
PBIB0582E
Continuity should exist.
Page 860 of 4555
EC-456
[QR (WITH EURO-OBD)]
INJECTOR CIRCUIT
6. DETECT MALFONCTIONING PART
Check the following.
Harness connectors F101, F1
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-456, "
Component Inspection" .
OK or NG
OK >> GO TO 8.
NG >> Replace injector.
8. CHECK INTERMITTENT INCIDENT
Refer to EC-124, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>>INSPECTION END
Component InspectionEBS010VF
INJECTOR
1. Disconnect injector harness connector.
2. Check resistance between terminals as shown in the figure.
Removal and InstallationEBS010VG
INJECTOR
Refer to EM-34, "FUEL INJECTOR AND FUEL TUBE" . Resistance: 13.5 - 17.5Ω [at 10 - 60°C (50 - 140°F)]
PBIB1727E
Page 861 of 4555
![NISSAN X-TRAIL 2005 Service Repair Manual VIAS
EC-457
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VIASPFP:14956
DescriptionEBS011HT
SYSTEM DESCRIPTION
*: The ECM determines the start signal status by the signals of engine speed and batte NISSAN X-TRAIL 2005 Service Repair Manual VIAS
EC-457
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VIASPFP:14956
DescriptionEBS011HT
SYSTEM DESCRIPTION
*: The ECM determines the start signal status by the signals of engine speed and batte](/manual-img/5/57403/w960_57403-860.png)
VIAS
EC-457
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VIASPFP:14956
DescriptionEBS011HT
SYSTEM DESCRIPTION
*: The ECM determines the start signal status by the signals of engine speed and battery voltage.
When the engine is running at low or medium speed, the power valve is fully closed. Under this condition, the
effective suction port length is equivalent to the total length of the intake manifold collector's suction port
including the intake valve. This long suction port provides increased air intake which results in improved suc-
tion efficiency and higher torque generation.
The surge tank and one-way valve are provided. When engine is running at high speed, the ECM sends the
signal to the VIAS control solenoid valve. This signal introduces the intake manifold vacuum into the power
valve actuator and therefore opens the power valve to two suction passages together in the collector.
Under this condition, the effective port length is equivalent to the length of the suction port provided indepen-
dently for each cylinder. This shortened port length results in enhanced engine output with reduced suction
resistance under high speeds.
COMPONENT DESCRIPTION
Power Valve
The power valve is installed in intake manifold collector and used to
control the suction passage of the variable induction air control sys-
tem. It is set in the fully closed or fully opened position by the power
valve actuator operated by the vacuum stored in the surge tank. The
vacuum in the surge tank is controlled by the VIAS control solenoid
valve.
Sensor Input Signal to ECM ECM function Actuator
Crankshaft position sensor (POS)
Camshaft position sensor (PHASE)Engine speed*
VIAS control VIAS control solenoid valve Mass air flow sensor Amount of intake air
Throttle position sensor Throttle position
Accelerator pedal position sensor Accelerator pedal position
Battery Battery voltage*
Engine coolant temperature sensor Engine coolant temperature
PBIB0843E
PBIB0946E
Page 862 of 4555
EC-458
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VIAS
VIAS Control Solenoid Valve
The VIAS control solenoid valve cuts the intake manifold vacuum
signal for power valve control. It responds to ON/OFF signals from
the ECM. When the solenoid is off, the vacuum signal from the
intake manifold is cut. When the ECM sends an ON signal the coil
pulls the plunger downward and feeds the vacuum signal to the
power valve actuator.
CONSULT-II Reference Value in Data Monitor ModeEBS011HU
PBIB0947E
MONITOR ITEM CONDITION SPECIFICATION
VIAS S/V
Engine: After warming upIdle OFF
More than 5,000 rpm ON
Page 863 of 4555
VIAS
EC-459
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Wiring DiagramEBS011HW
TBWA0651E
Page 864 of 4555
EC-460
[QR (WITH EURO-OBD)]
VIAS
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.
TERMI-
NAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
6YVIAS control solenoid
valve[Engine is running]
Idle speedBATTERY VOLTAGE
(11 - 14V)
[Engine is running]
Engine speed is above 5,000 rpm0 - 1.0V