2002 NISSAN TERRANO Service Repair Manual

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.
MEC006E
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
OKEGO TO 10.
NGEGO TO 9.
9 DETECT MALFUNCTIONING PART
Check the following.
IHarness connectors F108, E225
IHarness connectors M842, F135
IFuse block (J/B) connector F48 (LHD models), M756 (RHD models)
I10A fuse
IHarness for open or short between swirl control valve control solenoid valve and fuse
ERepair 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
OKEGO TO 12.
NGEGO TO 11.
SWIRL CONTROL VALVE CONTROL SOLENOID VALVEZD30DDTi
Diagnostic Procedure (Cont'd)
EC-271

11 DETECT MALFUNCTIONING PART
Check the following.
IHarness connectors E227, F106
IHarness connectors F135, M842 (RHD models)
IHarness 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.
12 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
OKEGO TO 13.
NGEReplace swirl control valve control solenoid valve.
13 CHECK INTERMITTENT INCIDENT
Perform ªTROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENTº, EC-78.
EINSPECTION END
SWIRL CONTROL VALVE CONTROL SOLENOID VALVEZD30DDTi
Diagnostic Procedure (Cont'd)
EC-272

Description
Vibration when stopping the engine can be controlled by cutting
intake air just 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 con-
trol 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.
Operation
Sensor Input Signal to ECMECM
FunctionActuator
Ignition switch OFFIntake
air con-
trol
valve
controlIntake air control valve control solenoid
valve
"
Intake air control valve actuator Crankshaft position sensor (TDC) Engine stall
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)
2LGIntake air control valve
control solenoid valveEngine is running.
BATTERY VOLTAGE
(11 - 14V)
Ignition switch ªOFFº
For a few seconds after engine stopsApproximately 0.1V
MEC006E
INTAKE AIR CONTROL VALVE CONTROL SOLENOID
VA LV EZD30DDTi
EC-273

Wiring Diagram
YEC200A
INTAKE AIR CONTROL VALVE CONTROL SOLENOID
VA LV EZD30DDTi
EC-274

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.
MEC011E
OK or NG
OKEINSPECTION END
NGEGO 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.
MEC012E
MTBL1328
OK or NG
OKEGO TO 3.
NGEGO TO 4.
INTAKE AIR CONTROL VALVE CONTROL SOLENOID
VA LV EZD30DDTi
EC-275

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.
MEC013E
OK or NG
OKERepair or replace vacuum hoses and vacuum gallery.
NGEReplace 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
OKEGO TO 5.
NGERepair or replace vacuum hoses and vacuum gallery.
INTAKE AIR CONTROL VALVE CONTROL SOLENOID
VA LV EZD30DDTi
Diagnostic Procedure (Cont'd)
EC-276

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.
MEC006E
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
OKEGO TO 11.
NGEGO TO 6.
INTAKE AIR CONTROL VALVE CONTROL SOLENOID
VA LV EZD30DDTi
Diagnostic Procedure (Cont'd)
EC-277

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 to
Wiring Diagram.
Continuity should exist.
4. Also check harness for short to ground and short to power.
OK or NG
OKEGO TO 8.
NGEGO TO 7.
7 DETECT MALFUNCTIONING PART
Check the following.
IHarness connectors M807, E201
IHarness 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
OKEGO TO 10.
NGEGO TO 9.
9 DETECT MALFUNCTIONING PART
Check the following.
I10A fuse
IHarness 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-278