Nissan Note [1686/1872] Ec 1686

Nissan Note [1686/1872] Ec 1686
EC-1686
[K9K]
TROUBLE DIAGNOSIS
*: When climate control is requested with the engine at idle speed and vehicle speed=0km/h,FANUNITLOWwillalwaysbe“ACTIVE
and FAN UNIT HIGH “INACTIVE” (except refrigerant pressure> 15 bar, vehicle speed = 0 km/h and high engine coolant temperature).
The fan is prevented from operating under certain engine coolant temperature conditions when driving.
Test Condition: Engine at Idle
10 Fan speed request* ET022:
FAN UNIT LOW
INACTIVE
TheECMrequeststheIPDME/
Rtostartthefan.
INACTIVE: Engine speed = 0
rpm.
ACTIVE: Engine speed = idle
speed, correct refrigerant
pressure and vehicle speed =
0 km/h or high engine coolant
temperature.
NONE.
11 Fan speed request* ET021:
FAN UNIT HIGH
INACTIVE
TheECMrequeststheIPDME/
Rtostartthefans.
INACTIVE: Engine speed = 0
rpm.
ACTIVE: Engine speed = idle
speed.
Refrigerant pressure > 15
Bar,vehiclespeed=0km/h
or high coolant temperature.
NONE.
Order Function
Parameterorstatus
check or action
Display and notes Trouble diagnosis
Order Function
Parameter or status
check or action
Display and notes Trouble diagnosis
1
Air conditioning
present
ET079:
PRSNC CLMTSTN
YES
States whether the vehicle is fit-
ted with air conditioning or not.
YES: Air conditioning is
detected by the ECM.
NO: Air conditioning is not
detected by the ECM.
If not consistent with the vehicle
equipment, perform the trouble
diagnosis for CAN communica-
tion line.
2
Compressor
engagement request
ET088:
DMND LNK COMP
INACTIVE
TheECMrequeststheIPDME/
R (via CAN communication line)
to start the compressor
ACTIVE: The CAN communi-
cation should not be sus-
pected on the Automatic
Transmission, IPDM E/R or
Intelligent Key unit or BCM
system.
The Intelligent Key unit or
BCM should request the ECM
to be engaged.
The refrigerant pressure sen-
sor should not be suspected.
Satisfactory engine operating
conditions (engine coolant
temperature, engine load
etc.).
INACTIVE: One of the above
conditions has not been ful-
filled or no request has been
made by the driver so A/C
AUTHOR = NO.
NONE.

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