Nissan Primera P11. Manual — part 233
Component Inspection
NCEC0071
INTAKE AIR TEMPERATURE SENSOR
NCEC0071S01
Check resistance between mass air flow sensor terminal 1 and 3.
<Reference data>
Intake air temperature
°C (°F)
Resistance k
Ω
20 (68)
2.2 - 2.6
80 (176)
0.31 - 0.37
If NG, replace mass air flow sensor.
SEF012P
DTC P0110 INTAKE AIR TEMPERATURE SENSOR
SR20DE
Component Inspection
EC-131
Component Description
NCEC0072
The engine coolant temperature sensor is used to detect the
engine coolant temperature. The sensor modifies a voltage signal
from the ECM. The modified signal returns to the ECM as the
engine coolant temperature input. The sensor uses a thermistor
which is sensitive to the change in temperature. The electrical
resistance of the thermistor decreases as temperature increases.
<Reference data>
Engine coolant temperature
°C (°F)
Voltage*
V
Resistance
k
Ω
−10 (14)
4.4
7.0 - 11.4
20 (68)
3.5
2.1 - 2.9
50 (122)
2.2
0.68 - 1.00
90 (194)
0.9
0.236 - 0.260
*: These data are reference values and are measured between ECM terminal 70
(Engine coolant temperature sensor) and ECM terminal 48 (ECM ground).
CONSULT-II Reference Value in Data Monitor
Mode
NCEC0073
MONITOR ITEM
CONDITION
SPECIFICATION
COOLAN TEMP/S
I
Engine: After warming up
More than 70°C (158°F)
On Board Diagnosis Logic
NCEC0074
DTC No.
Malfunction is detected when ...
Check Items (Possible Cause)
P0115
0115
I
An excessively high or low voltage from the sensor is
sent to ECM.*
I
Harness or connectors
(The sensor circuit is open or shorted.)
I
Engine coolant temperature sensor
*: When this malfunction is detected, the ECM enters fail-safe mode and the MI lights up.
Detected items
Engine operating condition in fail-safe mode
Engine coolant tempera-
ture sensor circuit
Engine coolant temperature will be determined by ECM based on the time after turning ignition switch
“ON” or “START”.
CONSULT-II displays the engine coolant temperature decided by ECM.
Condition
Engine coolant temperature decided (CONSULT-II
display)
Just as ignition switch is turned ON or Start
40°C (104°F)
More than approx. 4 minutes after ignition ON or
Start
80°C (176°F)
Except as shown above
40 - 80°C (104 - 176°F)
(Depends on the time)
When the fail-safe system for engine coolant temperature sensor is activated, the cooling fan operates
while the engine is running.
SEF594K
SEF012P
DTC P0115 ENGINE COOLANT TEMPERATURE SENSOR
(ECTS) (CIRCUIT)
SR20DE
Component Description
EC-132
DTC Confirmation Procedure
NCEC0075
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.
With CONSULT-II
1)
Turn ignition switch “ON”.
2)
Select “DATA MONITOR” mode with CONSULT-II.
3)
Wait at least 5 seconds.
4)
If 1st trip DTC is detected, go to “Diagnostic Procedure”, EC-
SR-135.
With GST
Follow the procedure “With CONSULT-II” above.
PEF002P
DTC P0115 ENGINE COOLANT TEMPERATURE SENSOR
(ECTS) (CIRCUIT)
SR20DE
DTC Confirmation Procedure
EC-133
Wiring Diagram
NCEC0076
YEC082A
DTC P0115 ENGINE COOLANT TEMPERATURE SENSOR
(ECTS) (CIRCUIT)
SR20DE
Wiring Diagram
EC-134
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