engine control NISSAN TERRANO 2002 Service Repair Manual

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 1IEngine: After warming up
IAir conditioner switch: ªOFFº
IShift lever: Neutral position
INo-loadIdle Approx. 56%
2,000 rpm Approx. 20%
SEF453Z
MEC014E
VARIABLE NOZZLE TURBOCHARGER CONTROL
SOLENOID VALVEZD30DDTi
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
COLORITEM CONDITION DATA (DC Voltage)
101 YVariable nozzle turbo-
charger control solenoid
valveEngine is running.
Warm-up condition
Idle speedApproximately 6.8V
SEF253Z
Engine is running.
Warm-up condition
Engine speed is 2,000 rpmApproximately 11V
SEF254Z
VARIABLE NOZZLE TURBOCHARGER CONTROL
SOLENOID VALVEZD30DDTi
EC-282

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
OKEINSPECTION END
NGEGO TO 2.
2 CHECK VACUUM SOURCE
1. Turn ignition switch ªOFFº.
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.
MEC016EVacuum should exist.
OK or NG
OKEGO TO 3.
NGEGO TO 5.
VARIABLE NOZZLE TURBOCHARGER CONTROL
SOLENOID VALVEZD30DDTi
EC-284

General Specifications
Unit: rpm
EngineZD30DDTi
Idle speed750 25
Maximum engine speed4,300
Injection Pump Numbers
Engine Part number Pump assembly number
ZD30DDTi 16700 VG100 109342-4023
Injection Nozzle
Unit: kPa (bar, kg/cm2, psi)
Initial injection pressureUsed 19,026 (190.3, 194, 2,759)
New 19,516 - 20,497 (195.2 - 205.0, 199 - 209, 2,830 - 2,972)
Limit 16,182 (161.8, 165, 2,346)
Engine Coolant Temperature Sensor
Temperature ÉC (ÉF) Resistance kW
20 (68) 2.1 - 2.9
50 (122) 0.68 - 1.00
90 (194) 0.236 - 0.260
Crankshaft Position Sensor (TDC)
Resistance [at 20ÉC (68ÉF)]W1,287 - 1,573
Glow Plug
Resistance [at 20ÉC (68ÉF)]WApproximately 0.5
Accelerator Position Sensor
Throttle valve conditions Resistance between terminals 2 and 3 kW[at 25ÉC (77ÉF)]
Completely closedApproximately 0.5
Partially open0.5-4
Completely openApproximately 4
EGR Volume Control Valve
Resistance [at 25ÉC (77ÉF)]W13-17
SERVICE DATA AND SPECIFICATIONS (SDS)ZD30DDTi
EC-292

Engine Fuel & Emission Control System
MEC031E
PRECAUTIONS AND PREPARATIONTD27Ti
EC-297

Engine Control Component Parts Location
YEC234A
ENGINE AND EMISSION CONTROL OVERALL SYSTEMTD27Ti
EC-300

NEF757
ENGINE AND EMISSION CONTROL OVERALL SYSTEMTD27Ti
Engine Control Component Parts Location
(Cont'd)
EC-301

Circuit Diagram
YEC140A
ENGINE AND EMISSION CONTROL OVERALL SYSTEMTD27Ti
EC-302

System Diagram
YEC235A
ENGINE AND EMISSION CONTROL OVERALL SYSTEMTD27Ti
EC-303

Vacuum Hose Drawing
q1Throttle body control valve actuator
to throttle body control solenoid
valve
q
2EGR valve to 3-way connector
q
3EGRC-solenoid valve A to 3-way
connector-1q
4EGRC-solenoid valve B to 3-way
connector-1
q
5Throttle body control solenoid
valve to 2-way connector-2
q
6EGRC-solenoid valve A to 3-way
connector-2q
7Tube to 3-way connector-2
q
8Tube to vacuum pump
q
9Tube to brake booster
Refer to ªSystem Diagramº, on previous page for vacuum control system
NEF759
ENGINE AND EMISSION CONTROL OVERALL SYSTEMTD27Ti
EC-304