2004 NISSAN TERRANO Service Repair Manual

5 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 6.
NG ERepair or replace vacuum hoses and vacuum gallery.
6 CHECK VARIABLE NOZZLE TURBOCHARGER CONTROL SOLENOID VALVE POWER SUPPLY CIRCUIT
1. Turn ignition switch ªOFFº.
2. Disconnect variable nozzle turbocharger control solenoid valve harness connector.
MEC014E
3. Turn ignition switch ªONº.
4. Check voltage between variable nozzle turbocharger control solenoid valve terminal 2 and ground with CONSULT-II or tester.
MEC985DVoltage: Battery voltage
OK or NG
OK EGO TO 8.
NG EGO TO 7.
VARIABLE NOZZLE TURBOCHARGER CONTROL
SOLENOID VALVEZD30DDTi
Diagnostic Procedure (Cont'd)
EC-294
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7 DETECT MALFUNCTIONING PART
Check the following.
IHarness connectors M842, F135 (RHD models)
I Fuse block (J/B) connector F48 (LHD models), M756 (RHD models)
I 10A fuse
I Harness for open or short between variable nozzle turbocharger control solenoid valve and fuse
ERepair open circuit or short to ground or short to power in harness or connectors.
8 CHECK VARIABLE NOZZLE TURBOCHARGER 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 101 and variable nozzle turbocharger 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 10.
NG EGO TO 9.
9 DETECT MALFUNCTIONING PART
Check the following.
IHarness connectors F135, M842 (RHD models)
I Harness for open or short between variable nozzle turbocharger control solenoid valve and ECM
ERepair open circuit or short to ground or short to power in harness or connectors.
VARIABLE NOZZLE TURBOCHARGER CONTROL
SOLENOID VALVEZD30DDTi
Diagnostic Procedure (Cont'd)
EC-295
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10 CHECK VARIABLE NOZZLE TURBOCHARGER CONTROL SOLENOID VALVE
1. Disconnect variable nozzle turbocharger control solenoid valve harness connector.
MEC014E
2. Apply 12V direct current between variable nozzle turbocharger control solenoid valve terminals.
3. Check air passage continuity of variable nozzle turbocharger control solenoid valve under the following conditions.
SEF454Z
OK or NG
OK EGO TO 11.
NG EReplace variable nozzle turbocharger control solenoid valve.
11 CHECK INTERMITTENT INCIDENT
Perform ªTROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENTº, EC-78.
EINSPECTION END
VARIABLE NOZZLE TURBOCHARGER CONTROL
SOLENOID VALVEZD30DDTi
Diagnostic Procedure (Cont'd)
EC-296
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Component Description
Engine oil pressure switches that monitor oil pressure at high
engine speed (switch-2) and oil pressure at low engine speed
(switch-1) are located on oil passage.
For detection of oil pressure at low engine speed, engine oil pres-
sure switch-1 turns oil pressure warning lamp ON if oil pressure
drops too low under normal engine running speed (below specified
pressure of engine oil pressure switch-1 at low engine speed).
For detection of oil pressure at high engine speed, engine oil pres-
sure switch-2 sends an ON signal to the ECM if oil pressure drops
lower than specified value when engine is running at high speed or
under high loading. Then the ECM turns oil pressure warning lamp
ON.
System Description
Malfunction is detected when...ConditionOil pressure
warning lamp
Engine oil pressure switch-1 Engine oil amount is too low.
IEngine is running. ON
Except above condition OFF
Engine oil pressure switch-2 An excessively high voltage is sent
to the ECM.
I
Ignition switch: ON
(Engine stopped)
I Engine is running ON
Engine oil amount is below low level
for running engine at high speed. More than 5 seconds when the fol-
lowing conditions are met
I
Engine: After warming-up [Below
95ÉC (203ÉF)]
I Engine speed: 3,600 - 4,200 rpm
I Engine oil pressure switch-2: ON ON
Except above condition OFF
NOTE:
Oil pressure warning lamp is not turned OFF until ignition switch is turned OFF when turning ON during engine run-
ning.
If the test is performed again, always perform the test after turning ignition switch OFF.
SEC382D
ENGINE OIL PRESSURE SWITCHZD30DDTi
EC-297
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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 result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
TERMINALNO. WIRE
COLOR ITEM CONDITION DATA (DC Voltage)
6 Y Oil pressure warning lamp [Ignition switch ªONº]
I
Oil pressure warning lamp is
illuminated Approximately 0V
[Engine is running]
I Oil pressure warning lamp is
not illuminated Battery voltage (12 - 14V)
27 R/L Engine oil pressure switch-2 [Ignition switch ªONº] Approximately 0V
[Engine is running]
I
Engine speed is 3,600 rpm Battery voltage (12 - 14V)
ENGINE OIL PRESSURE SWITCHZD30DDTi
EC-298
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Wiring Diagram
LHD MODELS
YEC667A
ENGINE OIL PRESSURE SWITCHZD30DDTi
EC-299
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RHD MODELS
YEC668A
ENGINE OIL PRESSURE SWITCHZD30DDTi
Wiring Diagram (Cont'd)EC-300
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Diagnostic Procedure
1 OVERALL FUNCTION CHECK-I
1. Turn ignition switch ªONº.
2. Check oil pressure warning lamp in combination meter illumination.Oil pressure warning lamp should illuminate after turning ignition switch ªONº immediately.
OK or NG
OK EGO TO 2.
NG EGO TO 8.
2 CHECK ENGINE OIL LEVEL
1. Turn ignition switch ªOFFº.
2. Check engine oil level.
SMA885BEngine oil level: Between L and H
OK or NG
OK EGO TO 4.
NG EGO TO 3.
3 DETECT MALFUNCTIONING PART
Check the following.
ICheck area around drain plug and oil filter for oil leakage.
I Check area around cylinder block oil gallery.
EIf NG, repair or replace. Refer to EM and LC sections.
4 OVERALL FUNCTION CHECK-II
1. Turn ignition switch ªONº and wait at least 3 seconds.
2. Start engine and let it idle.
3. Check oil pressure warning lamp illumination.
Oil pressure warning lamp should go off.
OK or NG
OK EGO TO 5.
NG EGO TO 14.
5 OVERALL FUNCTION CHECK-III
1. Warm up engine to the normal operating temperature.
2. Keep engine speed between 3,600 to 4,200 rpm at least 30 seconds.
3. Check oil pressure warning lamp illumination.
Oil pressure warning lamp should not illuminate.
OK or NG
OK EGO TO 6.
NG EGO TO 24.
ENGINE OIL PRESSURE SWITCHZD30DDTi
EC-301
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