Nissan Note [1665/1872] Ec 1665

Nissan Note [1665/1872] Ec 1665
TROUBLE DIAGNOSIS
EC-1665
[K9K]
C
D
E
F
G
H
I
J
K
L
M
A
EC
5. CHECK STARTING CIRCUIT
Make sure that the starting circuit is working correctly (minimum engine speed 200 rpm).
Turn the ignition switch OFF and reconnect the 4 fuel injectors and low pressure actuator electrically.
Turn the ignition switch ON, and erase the DTCs using CONSULT-II.
>> GO TO 6.
6. CHECK FUEL FILTER
CarryoutTEST11.
>> GO TO 7.
7. CHECK FUEL INJECTOR RETURN VOLUME
Carry out the trouble diagnosis on the fuel injectors by checking the return volume of the 4 fuel injectors.
See TEST 9 or TEST 10 if the engine does not start.
Is TEST 9 or TEST 10 correct?
Yes or No
Yes >> Replace the high pressure pump.
No >> Replace the suspected fuel injector(s).
TEST 8: HIGH-PRESSURE CIRCUIT LEAK CHECK
NOTE:
Certain malfunctions make it impossible to carry out this test, deal with them first.
There is a command that performs a leak test on the high-pressure circuit when the engine is running.
This command can detect a leak on the high-pressure circuit if a union is improperly fitted or bolted, but cannot
detect a small leak if a union is not torque tightened.
This command can only be used if the engine temperature is above 60°C.
Perform “HIGH PRESS CIRC LEAK T” in ACTIVE TEST mode, the engine will automatically carry out one
cycle of 4 accelerations to raise the pressure in the fuel rail and check whether there are leaks in the high
pressure circuit.
Watch out for any objects (tools, etc.) on the sides of the engine housing during the four accelerations (vibra-
tions possible).
TEST 9: FUEL INJECTOR LEAK CHECK
NOTE:
Certain malfunctions make it impossible to carry out this test, deal with them first.
“HIGH PRESS CIRC LEAK T” in ACTIVE TEST mode also allows you to check the return volume of each fuel
injector to detect a leak inside the fuel injectors.
Tooling required:
It is essential to use 4 transparent pipes with an internal diameter of 4 mm and a length of approximately
50 cm.
4 graduated measuring cylinders.
PROCEDURE
Check that the engine coolant temperature is above 60°C.
Turn ignition switch OFF.
Disconnect the return pipes from the 4 fuel injectors.
Fit a plug in the pump venturi tube to prevent the low-pressure circuit from depriming.
Connect the 4 transparent pipes with an internal diameter of 4 mm and a length of 50 cm in place of the
return pipes.
Immerse these 4 pipes into 4 graduated measuring cylinders.
Having carried out these preparations, start the engine, then let it run for 2 minutes at idle speed.
Perform “HIGH PRESS CIRC LEAK T” in ACTIVE TEST mode: the engine will automatically perform one
cycle of 4 accelerations to raise the pressure in the fuel rail and measure the leaks inside the fuel injectors
in these conditions.

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