Nissan Terrano model r20 series 2004. Instruction — part 144
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.
TERMINAL
NO.
WIRE
COLOR
ITEM
CONDITION
DATA (DC Voltage)
6
Y
Oil pressure warning lamp
[Ignition switch “ON”]
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 “ON”]
Approximately 0V
[Engine is running]
I
Engine speed is 3,600 rpm
Battery voltage (12 - 14V)
ENGINE OIL PRESSURE SWITCH
ZD30DDTi
EC-298
Wiring Diagram
LHD MODELS
YEC667A
ENGINE OIL PRESSURE SWITCH
ZD30DDTi
EC-299
RHD MODELS
YEC668A
ENGINE OIL PRESSURE SWITCH
ZD30DDTi
Wiring Diagram (Cont’d)
EC-300
Diagnostic Procedure
1
OVERALL FUNCTION CHECK-I
1. Turn ignition switch “ON”.
2. Check oil pressure warning lamp in combination meter illumination.
Oil pressure warning lamp should illuminate after turning ignition switch “ON” immediately.
OK or NG
OK
E
GO TO 2.
NG
E
GO TO 8.
2
CHECK ENGINE OIL LEVEL
1. Turn ignition switch “OFF”.
2. Check engine oil level.
SMA885B
Engine oil level: Between L and H
OK or NG
OK
E
GO TO 4.
NG
E
GO TO 3.
3
DETECT MALFUNCTIONING PART
Check the following.
I
Check area around drain plug and oil filter for oil leakage.
I
Check area around cylinder block oil gallery.
E
If NG, repair or replace. Refer to EM and LC sections.
4
OVERALL FUNCTION CHECK-II
1. Turn ignition switch “ON” 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
E
GO TO 5.
NG
E
GO 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
E
GO TO 6.
NG
E
GO TO 24.
ENGINE OIL PRESSURE SWITCH
ZD30DDTi
EC-301
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