Nissan Almera Tino V10. Instruction — part 340
EC-186
[QG (WITH EURO-OBD)]
DTC P0112, P0113 IAT SENSOR
Diagnostic Procedure
EBS00QIZ
1.
CHECK INTAKE AIR TEMPERATURE SENSOR POWER SUPPLY CIRCUIT
1.
Turn ignition switch “OFF”.
2.
Disconnect mass air flow sensor (intake air temperature sensor
is built-into) harness connector.
3.
Turn ignition switch “ON”.
4.
Check voltage between MAF sensor terminal 5 and ground.
OK or NG
OK
>> GO TO 2.
NG
>> Repair open circuit or short to ground or short to power
in harness or connectors.
2.
CHECK INTAKE AIR TEMPERATURE SENSOR GROUND CIRCUIT FOR OPEN AND SHORT
1.
Turn ignition switch “OFF”.
2.
Disconnect ECM harness connector.
3.
Check harness continuity between MAF sensor terminal 3 and ECM terminal 67.
Refer to Wiring Diagram.
4.
Also check harness for short to ground and short to power.
OK or NG
OK
>> GO TO 3.
NG
>> Repair open circuit or short to ground or short to power in harness or connectors.
3.
CHECK INTAKE AIR TEMPERATURE SENSOR
Refer to
EC-187, "Component Inspection"
.
OK or NG
OK
>> GO TO 4.
NG
>> Replace mass air flow sensor (with intake air temperature sensor).
4.
CHECK INTERMITTENT INCIDENT
Refer to
EC-138, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"
.
>> INSPECTION END
MBIB0096E
Voltage: Approximately 5V
PBIB0066E
Continuity should exist.
DTC P0112, P0113 IAT SENSOR
EC-187
[QG (WITH EURO-OBD)]
C
D
E
F
G
H
I
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M
A
EC
Component Inspection
EBS00QJ0
INTAKE AIR TEMPERATURE SENSOR
1.
Check resistance between mass air flow sensor terminals 3 and
5 under the following conditions.
2.
If NG, replace mass air flow sensor (with intake air temperature
sensor).
Removal and Installation
EBS00QJ1
MASS AIR FLOW SENSOR
Refer to
EM-16, "AIR CLEANER AND AIR DUCT"
.
Intake air temperature
°
C (
°
F)
Resistance k
Ω
25 (77)
1.9 - 2.1
SEC266C
SEF012P
EC-188
[QG (WITH EURO-OBD)]
DTC P0117, P0118 ECT SENSOR
DTC P0117, P0118 ECT SENSOR
PFP:22630
Component Description
EBS00QJ2
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.
<Reference data>
*: 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 Logic
EBS00QJ3
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
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
SEF012P
DTC No.
Trouble Diagnosis Name
DTC Detecting Condition
Possible Cause
P0117
0117
Engine coolant temperature
sensor circuit low input
An 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
0118
Engine coolant temperature
sensor circuit high input
An excessively high voltage from the sensor is
sent to ECM.
Detected items
Engine operating condition in fail-safe mode
Engine coolant temper-
ature 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
engine is running.
DTC P0117, P0118 ECT SENSOR
EC-189
[QG (WITH EURO-OBD)]
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D
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G
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A
EC
DTC Confirmation Procedure
EBS00QJ4
NOTE:
If “DTC Confirmation Procedure” has been previously conducted, always turn ignition switch “OFF” and wait at
least 10 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 DTC is detected, go to
EC-191, "Diagnostic Procedure"
.
WITH GST
Follow the procedure “WITH CONSULT-II” above.
SEF058Y
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