2003 NISSAN ALMERA N16 Electronic Repair Manual

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Page 473 of 3189

NISSAN ALMERA N16 2003 Electronic Repair Manual DTC P0112, P0113 IAT SENSOR
EC-143
[QG (WITH EURO-OBD)]
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EC
Component InspectionEBS00K5A
INTAKE AIR TEMPERATURE SENSOR
1. Check resistance between mass air flow sensor terminals

Page 474 of 3189

NISSAN ALMERA N16 2003 Electronic Repair Manual EC-144
[QG (WITH EURO-OBD)]
DTC P0117, P0118 ECT SENSOR
DTC P0117, P0118 ECT SENSOR
PFP:22630
Component DescriptionEBS00K5C
The engine coolant temperature sensor is used to detect the engine
coolant

EC-144
[QG (WITH EURO-OBD)]
DTC P0117, P0118 ECT SENSOR
DTC P0117, P0118 ECT SENSOR
PFP:22630
Component DescriptionEBS00K5C
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 ther-
mistor decreases as temperature increases.

*: These data are reference values and are measured between ECM terminal 72
(Engine coolant temperature sensor) 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.
On Board Diagnosis LogicEBS00K5D
These self-diagnoses have the one trip detection logic.
FAIL-SAFE MODE
When this malfunction is detected, the ECM enters fail-safe mode and the MI lights up.
SEF594K
Engine coolant
temperature°C (°F)Voltage* V Resistance kΩ
−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
SEF012P
DTC No. Trouble Diagnosis Name DTC Detecting Condition Possible Cause
P0117
0117Engine coolant temperature
sensor circuit low inputAn excessively low voltage from the sensor is
sent to ECM.
●Harness or connectors
(The sensor circuit is open or shorted.)
●Engine coolant temperature sensor P0118
0118Engine coolant temperature
sensor circuit high inputAn excessively high voltage from the sensor is
sent to ECM.
Detected items Engine operating condition in fail-safe mode
Engine coolant temper-
ature sensor circuitEngine 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.
ConditionEngine 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
Sta r t80°C (176°F)
Except as shown above40 - 80°C (104 - 176°F)
(Depends on the time)
When the fail-safe system for engine coolant temperature sensor is a ctiva ted , th e co oling fan operates wh ile
engine is running.

Page 475 of 3189

NISSAN ALMERA N16 2003 Electronic Repair Manual DTC P0117, P0118 ECT SENSOR
EC-145
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DTC Confirmation ProcedureEBS00K5E
NOTE:
If “DTC Confirmation Procedure” has been previously conducted, always tur

Page 476 of 3189

NISSAN ALMERA N16 2003 Electronic Repair Manual EC-146
[QG (WITH EURO-OBD)]
DTC P0117, P0118 ECT SENSOR
Wiring Diagram
EBS00K5F
YEC280A

Page 477 of 3189

NISSAN ALMERA N16 2003 Electronic Repair Manual DTC P0117, P0118 ECT SENSOR
EC-147
[QG (WITH EURO-OBD)]
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Diagnostic ProcedureEBS00K5G
1.CHECK ECT SENSOR POWER SUPPLY CIRCUIT
1. Turn ignition switch “OFF”.
2. Disconnect

Page 478 of 3189

NISSAN ALMERA N16 2003 Electronic Repair Manual EC-148
[QG (WITH EURO-OBD)]
DTC P0117, P0118 ECT SENSOR
5. CHECK INTERMITTENT INCIDENT
Refer to EC-109, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>>INSPECTION END
Component InspectionEB

Page 479 of 3189

NISSAN ALMERA N16 2003 Electronic Repair Manual DTC P0132 HO2S1
EC-149
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DTC P0132 HO2S1PFP:22690
Component DescriptionEBS00K5J
The heated oxygen sensor 1 is placed into the exhaust manifold. I

Page 480 of 3189

NISSAN ALMERA N16 2003 Electronic Repair Manual EC-150
[QG (WITH EURO-OBD)]
DTC P0132 HO2S1
DTC Confirmation Procedure
EBS00K5M
NOTE:
If “DTC Confirmation Procedure” has been previously conducted, always turn ignition switch “OFF” and wait

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