2000 NISSAN PATROL SOLENOID

6 CHECK SWIRL CONTROL VALVE ACTUATOR
1. Turn ignition switch ªOFFº.
2. Install a vacuum pump to swirl control valve actuator.
3. Make sure that the swirl control valve actuator rod moves smoothly when applying vacuum of þ93.3 kPa (þ933 mbar, þ700
mmHg, þ27.6 inHg) and releasing it.
SEF311Z
OK or NG
OKcRepair or replace vacuum hoses and vacuum gallery.
NGcReplace swirl control valve actuator.
7 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
OKcGO TO 8.
NGcRepair or replace vacuum hoses and vacuum gallery.
SWIRL CONTROL VALVE CONTROL
SOLENOID VALVEZD30DDTi
Diagnostic Procedure (Cont'd)
EC-1251

8 CHECK SWIRL CONTROL VALVE CONTROL SOLENOID VALVE POWER SUPPLY CIRCUIT
1. Turn ignition switch ªOFFº.
2. Disconnect swirl control valve control solenoid valve harness connector.
SEF284Z
3. Turn ignition switch ªONº.
4. Check voltage between swirl control valve control solenoid valve terminal 2 and ground with CONSULT-II or tester.
SEF312Z
OK or NG
OKcGO TO 10.
NGcGO TO 9.
9 DETECT MALFUNCTIONING PART
Check the following.
+Harness connectors M52, F7
+Fuse block (J/B) connector M2
+10A fuse
+Harness for open or short between swirl control valve control solenoid valve and fuse
cRepair open circuit or short to ground or short to power in harness or connectors.
10 CHECK SWIRL 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 54 and swirl 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
OKcGO TO 11.
NGcRepair open circuit or short to ground or short to power in harness or connectors.
SWIRL CONTROL VALVE CONTROL
SOLENOID VALVEZD30DDTi
Diagnostic Procedure (Cont'd)
EC-1252

11 CHECK SWIRL CONTROL VALVE CONTROL SOLENOID VALVE
With CONSULT-II
1. Reconnect all disconnected harness connectors.
2. Turn ignition switch ªONº.
3. Select ªSWIRL CONT S/V 1º in ªACTIVE TESTº mode with CONSULT-II.
4. Check air passage continuity of swirl control valve control solenoid valve under the following conditions.
SEF313Z
Without CONSULT-II
1. Apply 12V direct current between swirl control valve control solenoid valve terminals.
2. Check air passage continuity of swirl control valve control solenoid valve under the following conditions.
SEF335X
OK or NG
OKcGO TO 12.
NGcReplace swirl control valve control solenoid valve.
12 CHECK INTERMITTENT INCIDENT
Perform ªTROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENTº, EC-1076.
cINSPECTION END
SWIRL CONTROL VALVE CONTROL
SOLENOID VALVEZD30DDTi
Diagnostic Procedure (Cont'd)
EC-1253

Description
Vibration when stopping the engine can be controlled by cutting
intake air right before the fuel is cut. The intake air control valve
control solenoid valve controls the ON-OFF load of the intake air
control valve actuator. As a result, the intake air control valve
control solenoid valve will be turned ON when the ignition switch
is turned OFF with the engine running and when the engine
stalls. After the engine has stopped, the intake air control valve
control solenoid valve will return to fully open.
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)
2 R/WIntake air control valve
control solenoid valveEngine is running.
BATTERY VOLTAGE
(11 - 14V)
Ignition switch ªOFFº
For a few seconds after engine stopsApproximately 0.1V
SEF284Z
INTAKE AIR CONTROL VALVE CONTROL
SOLENOID VALVEZD30DDTi
EC-1254

Wiring Diagram
TEC122M
INTAKE AIR CONTROL VALVE CONTROL
SOLENOID VALVEZD30DDTi
EC-1255

Diagnostic Procedure
1 CHECK OVERALL FUNCTION
1. Start engine and let it idle.
2. Make sure that intake air control valve actuator rod moves when turning ignition switch ªOFFº.
SEF315Z
OK or NG
OKcINSPECTION END
NGcGO TO 2.
2 CHECK VACUUM SOURCE
1. Turn ignition switch ªOFFº.
2. Disconnect vacuum hose connected to intake air control valve actuator.
3. Start engine and let it idle.
4. Check vacuum hose for vacuum existence under the following conditions.
SEF316Z
OK or NG
OKcGO TO 3.
NGcGO TO 4.
INTAKE AIR CONTROL VALVE CONTROL
SOLENOID VALVEZD30DDTi
EC-1256

3 CHECK INTAKE AIR CONTROL VALVE ACTUATOR
4. Turn ignition switch ªOFFº.
5. Install a vacuum pump to intake air control valve actuator.
6. Make sure that the intake air control valve actuator rod moves smoothly when applying vacuum of þ93.3 kPa (þ933 mbar, þ700
mmHg, þ27.56 psi) and releasing it.
SEF317Z
OK or NG
OKcRepair or replace vacuum hoses and vacuum gallery.
NGcReplace intake air control valve actuator.
4 CHECK VACUUM HOSE
3. Turn ignition switch ªOFFº.
4. Check vacuum hoses and vacuum gallery for clogging, cracks or improper connection.
SEF109L
OK or NG
OKcGO TO 5.
NGcRepair or replace vacuum hoses and vacuum gallery.
INTAKE AIR CONTROL VALVE CONTROL
SOLENOID VALVEZD30DDTi
Diagnostic Procedure (Cont'd)
EC-1257

5 CHECK INTAKE AIR CONTROL VALVE CONTROL SOLENOID VALVE POWER SUPPLY CIRCUIT-I
1. Turn ignition switch ªOFFº.
2. Disconnect intake air control valve control solenoid valve harness connector.
SEF284Z
3. Turn ignition switch ªONº.
4. Check voltage between intake air control valve control solenoid valve terminal 2 and ground with CONSULT-II or tester.
SEF312Z
OK or NG
OKcGO TO 11.
NGcGO TO 6.
INTAKE AIR CONTROL VALVE CONTROL
SOLENOID VALVEZD30DDTi
Diagnostic Procedure (Cont'd)
EC-1258