Nissan Terrano r20e. Manual — part 161
Description
The load from the variable nozzle turbocharger control solenoid
valve controls the actuator. By changing the variable nozzle vane
opening through the rods, the intake air volume is adjusted.
The variable nozzle turbocharger control solenoid valve is moved
by ON/OFF pulse from the ECM. The longer the ON pulse, the
charge air pressure rises.
CONSULT-II Reference Value in Data Monitor
Mode
Specification data are reference values.
MONITOR ITEM
CONDITION
SPECIFICATION
VNT S/V 1
I
Engine: After warming up
I
Air conditioner switch: “OFF”
I
Shift lever: Neutral position
I
No-load
Idle
Approx. 56%
2,000 rpm
Approx. 20%
SEF453Z
MEC014E
VARIABLE NOZZLE TURBOCHARGER CONTROL
SOLENOID VALVE
ZD30DDTi
EC-281
ECM Terminals and Reference Value
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 damage the
ECM’s transistor. Use a ground other than ECM terminals, such as the ground.
TER-
MINAL
NO.
WIRE
COLOR
ITEM
CONDITION
DATA (DC Voltage)
101
Y
Variable nozzle turbo-
charger control solenoid
valve
Engine is running.
Warm-up condition
Idle speed
Approximately 6.8V
SEF253Z
Engine is running.
Warm-up condition
Engine speed is 2,000 rpm
Approximately 11V
SEF254Z
VARIABLE NOZZLE TURBOCHARGER CONTROL
SOLENOID VALVE
ZD30DDTi
EC-282
Wiring Diagram
YEC201A
VARIABLE NOZZLE TURBOCHARGER CONTROL
SOLENOID VALVE
ZD30DDTi
EC-283
Diagnostic Procedure
1
CHECK OVERALL FUNCTION
1. Start engine and let it idle.
2. Make sure that variable nozzle turbocharger control actuator rod moves when revving engine up to 3,000 rpm and returning to
idle.
MEC015E
OK or NG
OK
E
INSPECTION END
NG
E
GO TO 2.
2
CHECK VACUUM SOURCE
1. Turn ignition switch “OFF”.
2. Disconnect vacuum hose connected to variable nozzle turbocharger control actuator.
3. Start engine and let it idle.
4. Check vacuum hose for vacuum existence.
MEC016E
Vacuum should exist.
OK or NG
OK
E
GO TO 3.
NG
E
GO TO 5.
VARIABLE NOZZLE TURBOCHARGER CONTROL
SOLENOID VALVE
ZD30DDTi
EC-284
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