1999 NISSAN PRIMERA Electronic Repair Manual

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Page 369 of 2267

NISSAN PRIMERA 1999 Electronic Repair Manual YEC802
INJECTION PUMP (CON-
TROL SLEEVE POSITION
SENSOR)
: Detectable line for DTC
: Non-detectable line for DTC
ECM
TROUBLE DIAGNOSIS 4CD20T
Control Sleeve Position Sensor (CSPS)
(Contd)
EC-75

Page 370 of 2267

NISSAN PRIMERA 1999 Electronic Repair Manual DIAGNOSTIC PROCEDURE
INSPECTION START
CHECK POWER SUPPLY CIRCUIT.
1. Turn ignition switch to ªLOCKº position.
2. Disconnect ECM harness connector and
electronic injection pump harness connec-
tor.
3

Page 371 of 2267

NISSAN PRIMERA 1999 Electronic Repair Manual COMPONENT INSPECTION
Control sleeve position sensor
1. Disconnect electronic injection pump harness connector.
2. Check continuity between terminals
p1andp3,p2and
p3.
Resistance: Approximately 6.0W[at

Page 372 of 2267

NISSAN PRIMERA 1999 Electronic Repair Manual Electric Governor
The electric governor is built into the fuel injection pump. It
moves the control sleeve to increase or decrease the amount of
fuel injected.
When current flows through the coil, a m

Page 373 of 2267

NISSAN PRIMERA 1999 Electronic Repair Manual YEC803
BATTERY
Refer to EL-POWER.
ENGINE
CONTROL
MODULE
RELAY: Detectable line for DTC
: Non-detectable line for DTC
INJECTION PUMP
(ELECTRIC GOVER-
NOR)
ECM
TROUBLE DIAGNOSIS 5CD20T
Electric Governor

Page 374 of 2267

NISSAN PRIMERA 1999 Electronic Repair Manual DIAGNOSTIC PROCEDURE
INSPECTION START
CHECK MAIN POWER SUPPLY.
Refer to EC-CD-59.
CHECK POWER SUPPLY CIRCUIT.
1. Turn ignition switch to ªLOCKº posi-
tion.
2. Disconnect ECM harness connector
and el

Page 375 of 2267

NISSAN PRIMERA 1999 Electronic Repair Manual COMPONENT INSPECTION
Electric governor
1. Disconnect electronic injection pump harness connector.
2. Check continuity between injection pump connector termi-
nals
p4andp7.
Resistance: Approximately 1.

Page 376 of 2267

NISSAN PRIMERA 1999 Electronic Repair Manual Injection Timing Control Valve
The injection timing control valve is built into the fuel injection
pump. It controls the timer piston to change the fuel injection
timing.
The timing control valve is a

Injection Timing Control Valve
The injection timing control valve is built into the fuel injection
pump. It controls the timer piston to change the fuel injection
timing.
The timing control valve is a solenoid valve located in the line
between high-pressure chamber and low-pressure chamber. It
changes fuel pressure in the high-pressure chamber.
When current flows through the solenoid (the solenoid turns ON),
the timing control valve opens, advancing fuel injection timing.
When current does not flow through it, the timing control valve
closes, retarding injection timing.
The ECM emits an ON-OFF duty cycle signal. The longer the
OFF-duration, the greater the advance angle. The longer the
ON-duration, the greater the retard angle. This means that
changing the ON-OFF duty cycle ratio makes it possible to
achieve an optimal advance angle and accurately control fuel
injection timing.
Malfunction is detected when ....Check Items
(Possible cause)
lInjection timing feedback system does not operate prop-
erly. (This system consists essentially of ECM, injection
timing control valve and needle lift sensor.)lHarness or connectors
[Injection timing control valve, needle lift sensor, crankshaft
position sensor (TDC) circuits]
lInjection timing control valve
lNeedle lift sensor
lCrankshaft position sensor (TDC)
lAir in fuel line
lInjection timing control valve circuit it open or shorted.lHarness or connectors
(The Injection timing control valve is open or shorted.)
lInjection timing control valve
DIAGNOSTIC TROUBLE CONFIRMATION
PROCEDURE FOR INJECTION TIMING CONTROL
SYSTEM
1) Turn ignition switch to ªONº position and select ªDATA
MONITORº mode with CONSULT-II.
2) Start engine. Run engine for 10 seconds at idle.
NOTE:
If malfunction occurs intermittently, conduct suitable driv-
ing pattern for 10 minutes. This makes it possible to deter-
mine the diagnostic trouble.
DIAGNOSTIC TROUBLE CONFIRMATION
PROCEDURE FOR INJECTION TIMING CONTROL
VALVE CIRCUIT
1) Turn ignition switch to ªONº position.
2) Select ªDATA MONITORº mode with CONSULT-II.
3) Wait at least 2 seconds.
SEF638S Timer piston
High
pres-
sureLow
pressure
Fuel injection timing
control valve
TROUBLE DIAGNOSIS 6CD20T
EC-82

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