Nissan Primera P11. Manual — part 176
6
CHECK IGNITION SPARK
1. Disconnect ignition coil assembly from rocker cover.
2. Connect a known good spark plug to the ignition coil assembly.
3. Place end of spark plug against a suitable ground and crank engine.
4. Check for spark.
SEF575Q
OK or NG
OK
©
GO TO 7.
NG
©
Check ignition coil, power transistor and their circuits. Refer to EC-QG-323.
7
CHECK INJECTOR
1. Turn ignition switch “OFF”.
2. Remove injector assembly. Refer to EC-QG-30.
Keep fuel hose and all injectors connected to injector gallery.
3. Disconnect camshaft position sensor harness connector.
4. Turn ignition switch “ON”.
Make sure fuel does not drip from injector.
OK or NG
OK (Does not drip)
©
GO TO 8.
NG (Drips)
©
Replace the injector(s) from which fuel is dripping.
8
CHECK INTERMITTENT INCIDENT
Perform “TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT”, EC-QG-102.
Trouble is fixed
©
INSPECTION END
Trouble is not fixed
©
Replace three way catalyst.
DTC P0420 THREE WAY CATALYST FUNCTION
QG16
I
18DE
Diagnostic Procedure (Cont’d)
EC-261
Description
NCEC0248
SYSTEM DESCRIPTION
NCEC0248S01
Sensor
Input Signal to ECM
ECM func-
tion
Actuator
Crankshaft position sensor (POS)
Engine speed
EVAP can-
ister purge
control
EVAP canister purge volume
control solenoid valve
Mass air flow sensor
Amount of intake air
Engine coolant temperature sensor
Engine coolant temperature
Battery
Battery voltage
Ignition switch
Start signal
Throttle position sensor
Throttle position
Heated oxygen 1 sensor
Density of oxygen in exhaust gas
(Mixture ratio feedback signal)
Vehicle speed sensor or ABS actuator and
electric unit (control unit)
Vehicle speed
This system controls flow rate of fuel vapor from the EVAP canis-
ter. The opening of the vapor by-pass passage in the EVAP canis-
ter purge volume control solenoid valve changes to control the flow
rate. The EVAP canister purge volume control solenoid valve
repeats ON/OFF operation according to the signal sent from the
ECM. The opening of the valve varies for optimum engine control.
The optimum value stored in the ECM is determined by consider-
ing various engine conditions. When the engine is operating, the
flow rate of fuel vapor from the EVAP canister is regulated as the
air flow changes.
COMPONENT DESCRIPTION
NCEC0248S02
The EVAP canister purge volume control solenoid valve uses a
ON/OFF duty to control the flow rate of fuel vapor from the EVAP
canister. The EVAP canister purge volume control solenoid valve
is moved by ON/OFF pulses from the ECM. The longer the ON
pulse, the greater the amount of fuel vapor that will flow through the
valve.
CONSULT-II Reference Value in Data Monitor
Mode
NCEC0249
MONITOR ITEM
CONDITION
SPECIFICATION
PURG VOL C/V
I
Engine: After warming up
I
No-load
I
Lift up drive wheels and shift to
1st gear position.
I
Air conditioner switch “OFF”
Idle
0%
More than 2,000 rpm
—
SEF337U
DTC P0443 EVAP CANISTER PURGE VOLUME CONTROL
SOLENOID VALVE (CIRCUIT)
QG16
I
18DE
Description
EC-262
ECM Terminals and Reference Value
NCEC0250
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.
TER-
MINAL
NO.
WIRE
COLOR
ITEM
CONDITION
DATA (DC Voltage)
14
P/B
EVAP canister purge vol-
ume control solenoid valve
[Engine is running]
I
Warm-up condition
I
Idle speed
BATTERY VOLTAGE
(11 - 14V)
[Vehicle is running]
I
Warm-up condition
I
2,000 rpm
5 - 12V
On Board Diagnosis Logic
NCEC0251
DTC No.
Malfunction is detected when ...
Check Items (Possible Cause)
P0443
0443
I
An improper voltage signal is sent to ECM through the
valve.
I
Harness or connectors
(The valve circuit is open or shorted.)
I
EVAP canister purge volume control solenoid
valve
DTC Confirmation Procedure
NCEC0252
NOTE:
If “DTC Confirmation Procedure” has been previously conducted,
always turn ignition switch “OFF” and wait at least 9 seconds
before conducting the next test.
TESTING CONDITION:
Before performing the following procedure, confirm battery
voltage is more than 11V.
With CONSULT-II
1)
Turn ignition switch “ON”.
2)
Select “DATA MONITOR” mode with CONSULT-II.
3)
Start engine and let it idle for at least 5 seconds.
4)
If 1st trip DTC is detected, go to “Diagnostic Procedure”, EC-
QG-265.
With GST
Follow the procedure “With CONSULT-II” above.
NEF068A
DTC P0443 EVAP CANISTER PURGE VOLUME CONTROL
SOLENOID VALVE (CIRCUIT)
QG16
I
18DE
ECM Terminals and Reference Value
EC-263
Wiring Diagram
NCEC0253
YEC783
: Detectable line for DTC
: Non-detectable line for DTC
ECM
EVAP CANISTER
PURGE VOLUME
CONTROL SOLENOID
VALVE
FUSE
BLOCK
(J/B)
Refer to EL-POWER.
IGNITION SWITCH
ON or START
Refer to last page (Foldout page)
DTC P0443 EVAP CANISTER PURGE VOLUME CONTROL
SOLENOID VALVE (CIRCUIT)
QG16
I
18DE
Wiring Diagram
EC-264
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