2004 NISSAN TERRANO Service Repair Manual

6 CHECK INTAKE AIR CONTROL VALVE CONTROL SOLENOID VALVE POWER SUPPLY CIRCUIT-II
1. Turn ignition switch ªOFFº.
2. Disconnect ECM relay.
MEC021E
3. Check harness continuity between intake air control valve control solenoid valve terminal 2 and ECM relay terminal 7. Refer toWiring Diagram. Continuity should exist.
4. Also check harness for short to ground and short to power.
OK or NG
OK EGO TO 8.
NG EGO TO 7.
7 DETECT MALFUNCTIONING PART
Check the following.
IHarness connectors M807, E201
I Harness for open or short between intake air control valve control solenoid valve and ECM relay
ERepair open circuit or short to ground or short to power in harness or connectors.
8 CHECK INTAKE AIR CONTROL VALVE CONTROL SOLENOID VALVE POWER SUPPLY CIRCUIT-III
Check voltage between ECM relay terminal 6 and ground with CONSULT-II or tester.
SEF297Z
OK or NG
OK EGO TO 10.
NG EGO TO 9.
9 DETECT MALFUNCTIONING PART
Check the following.
I10A fuse
I Harness for open or short between ECM relay and battery
ERepair open circuit or short to ground or short to power in harness or connectors.
INTAKE AIR CONTROL VALVE CONTROL SOLENOID
VA LV EZD30DDTi
Diagnostic Procedure (Cont'd)
EC-286
http://vnx.su/

10 CHECK ECM RELAY
1. Apply 12V direct current between ECM relay terminals 1 and 2.
2. Check continuity between ECM relay terminals 3 and 5, 6 and 7.
SEF296X
OK or NG
OK EGO TO 13.
NG EReplace ECM relay.
11 CHECK INTAKE AIR CONTROL VALVE CONTROL SOLENOID VALVE OUTPUT SIGNAL CIRCUIT FOR OPEN OR
SHORT
1. Turn ignition switch ªOFFº.
2. Disconnect ECM harness connector.
3. Check harness continuity between ECM terminal 2 and intake air control valve control solenoid valve terminal 1. Refer to Wiring Diagram. Continuity should exist.
4. Also check harness for short to ground and short to power.
OK or NG
OK EGO TO 13.
NG EGO TO 12.
12 DETECT MALFUNCTIONING PART
Check the following.
IHarness connectors E227, F106
I Harness connectors F135, M842 (RHD models)
I Harness for open or short between swirl control valve control solenoid valve and ECM
ERepair open circuit or short to ground or short to power in harness or connectors.
INTAKE AIR CONTROL VALVE CONTROL SOLENOID
VA LV EZD30DDTi
Diagnostic Procedure (Cont'd)
EC-287
http://vnx.su/

13 CHECK INTAKE AIR CONTROL VALVE CONTROL SOLENOID VALVE
1. Apply 12V direct current between intake air control valve control solenoid valve terminals.
2. Check air passage continuity of intake air control valve control solenoid valve under the following conditions.
SEF335X
OK or NG
OK EGO TO 14.
NG EReplace intake control valve control solenoid valve.
14 CHECK INTERMITTENT INCIDENT
Perform ªTROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENTº, EC-78.
EINSPECTION END
INTAKE AIR CONTROL VALVE CONTROL SOLENOID
VA LV EZD30DDTi
Diagnostic Procedure (Cont'd)
EC-288
http://vnx.su/

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 ITEMCONDITION SPECIFICATION
VNT S/V 1 I
Engine: After warming up
I Air conditioner switch: ªOFFº
I Shift lever: Neutral position
I No-load Idle Approx. 56%
2,000 rpm
Approx. 20%
SEF453Z
MEC014E
VARIABLE NOZZLE TURBOCHARGER CONTROL
SOLENOID VALVEZD30DDTi
EC-289
http://vnx.su/

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 rpmApproximately 11V
SEF254Z
VARIABLE NOZZLE TURBOCHARGER CONTROL
SOLENOID VALVEZD30DDTi
EC-290
http://vnx.su/

Wiring Diagram
YEC201A
VARIABLE NOZZLE TURBOCHARGER CONTROLSOLENOID VALVEZD30DDTi
EC-291
http://vnx.su/

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 toidle.
MEC015E
OK or NG
OK EINSPECTION END
NG EGO 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
OK EGO TO 3.
NG EGO TO 5.
VARIABLE NOZZLE TURBOCHARGER CONTROL
SOLENOID VALVEZD30DDTi
EC-292
http://vnx.su/

3 CHECK VARIABLE NOZZLE TURBOCHARGER CONTROL ACTUATOR
1. Turn ignition switch ªOFFº.
2. Install a vacuum pump to variable nozzle turbocharger control actuator.
3. Make sure that the variable nozzle turbocharger control actuator rod moves smoothly when applying vacuum of þ53.3 kPa (þ533mbar, þ400 mmHg, þ15.75 inHg) and releasing it.
MEC017E
OK or NG
OK EGO TO 4.
NG EReplace turbocharger assembly.
4 CHECK VACUUM HOSE
1. Turn ignition switch ªOFFº.
2. Check vacuum hoses and vacuum gallery for clogging, cracks or improper connection.
SEF109L
OK or NG
OK EGO TO 9.
NG ERepair or replace vacuum hoses and vacuum gallery.
VARIABLE NOZZLE TURBOCHARGER CONTROL
SOLENOID VALVEZD30DDTi
Diagnostic Procedure (Cont'd)
EC-293
http://vnx.su/