Nissan Primera P11. Manual — part 190
6
CHECK INTERMITTENT INCIDENT
Perform “TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT”, EC-QG-102.
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INSPECTION END
DTC P1706 PARK/NEUTRAL POSITION (PNP) SWITCH
QG16
I
18DE
Diagnostic Procedure For M/T Models (Cont’d)
EC-317
Component Description
NCEC0435
The fuel injector is a small, precise solenoid valve. When the ECM
supplies a ground to the injector circuit, the coil in the injector is
energized. The energized coil pulls the needle valve back and
allows fuel to flow through the injector into the intake manifold. The
amount of fuel injected depends upon the injection pulse duration.
Pulse duration is the length of time the injector remains open. The
ECM controls the injection pulse duration based on engine fuel
needs.
CONSULT-II Reference Value in Data Monitor
Mode
NCEC0436
MONITOR ITEM
CONDITION
SPECIFICATION
INJ PULSE - B1
I
Engine: After warming up
I
Air conditioner switch: OFF
I
Shift lever: “N”
I
No-load
Idle
2.4 - 3.2 msec
2,000 rpm
1.9 - 3.2 msec
B/FUEL SCHDL
I
Engine: After warming up
I
Air conditioner switch: OFF
I
Shift lever: “N”
I
No-load
Idle
1.5 - 2.5 msec
2,000 rpm
1.5 - 2.5 msec
ECM Terminals and Reference Value
NCEC0437
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.
TERMI-
NAL
NO.
WIRE
COLOR
ITEM
CONDITION
DATA (DC Voltage)
101
103
105
107
R/B
Y/B
G/B
L/B
Injector No. 1
Injector No. 2
Injector No. 3
Injector No. 4
[Engine is running]
I
Warm-up condition
I
Idle speed
BATTERY VOLTAGE
(11 - 14V)
SEF011W
[Engine is running]
I
Warm-up condition
I
Engine speed is 2,000 rpm
BATTERY VOLTAGE
(11 - 14V)
SEF012W
SEF138X
INJECTOR
QG16
I
18DE
Component Description
EC-318
Wiring Diagram
NCEC0434
YEC792
IGNITION SWITCH
ON or START
Refer to
EL-POWER.
: Detectable line for DTC
: Non-detectable line for DTC
FUSE
BLOCK
(J/B)
ECM
Refer to last page (Foldout page)
INJECTOR
No.1
INJECTOR
No.2
INJECTOR
No.3
INJECTOR
No.4
INJECTOR
QG16
I
18DE
Wiring Diagram
EC-319
Diagnostic Procedure
NCEC0438
1
CHECK OVERALL FUNCTION
With CONSULT-II
1. Start engine.
2. Perform “POWER BALANCE” in “ACTIVE TEST” mode with CONSULT-II.
NEF105A
3. Make sure that each circuit produces a momentary engine speed drop.
Without CONSULT-II
1. Start engine.
2. Listen to each injector operating sound.
MEC703B
Clicking noise should be heard.
OK or NG
OK
©
INSPECTION END
NG
©
GO TO 2.
INJECTOR
QG16
I
18DE
Diagnostic Procedure
EC-320
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