Nissan Terrano model r20 series 2004. Instruction — part 143
5
CHECK VACUUM HOSE
1. Turn ignition switch “OFF”.
2. Check vacuum hoses and vacuum gallery for clogging, cracks or improper connection.
SEF109L
OK or NG
OK
E
GO TO 6.
NG
E
Repair or replace vacuum hoses and vacuum gallery.
6
CHECK VARIABLE NOZZLE TURBOCHARGER CONTROL SOLENOID VALVE POWER SUPPLY CIRCUIT
1. Turn ignition switch “OFF”.
2. Disconnect variable nozzle turbocharger control solenoid valve harness connector.
MEC014E
3. Turn ignition switch “ON”.
4. Check voltage between variable nozzle turbocharger control solenoid valve terminal 2 and ground with CONSULT-II or tester.
MEC985D
Voltage: Battery voltage
OK or NG
OK
E
GO TO 8.
NG
E
GO TO 7.
VARIABLE NOZZLE TURBOCHARGER CONTROL
SOLENOID VALVE
ZD30DDTi
Diagnostic Procedure (Cont’d)
EC-294
7
DETECT MALFUNCTIONING PART
Check the following.
I
Harness 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
E
Repair 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 “OFF”.
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
E
GO TO 10.
NG
E
GO TO 9.
9
DETECT MALFUNCTIONING PART
Check the following.
I
Harness connectors F135, M842 (RHD models)
I
Harness for open or short between variable nozzle turbocharger control solenoid valve and ECM
E
Repair open circuit or short to ground or short to power in harness or connectors.
VARIABLE NOZZLE TURBOCHARGER CONTROL
SOLENOID VALVE
ZD30DDTi
Diagnostic Procedure (Cont’d)
EC-295
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
E
GO TO 11.
NG
E
Replace variable nozzle turbocharger control solenoid valve.
11
CHECK INTERMITTENT INCIDENT
Perform “TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT”, EC-78.
E
INSPECTION END
VARIABLE NOZZLE TURBOCHARGER CONTROL
SOLENOID VALVE
ZD30DDTi
Diagnostic Procedure (Cont’d)
EC-296
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...
Condition
Oil pressure
warning lamp
Engine oil pressure switch-1
Engine oil amount is too low.
I
Engine 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
95°C (203°F)]
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 SWITCH
ZD30DDTi
EC-297
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