Nissan Primera P12. Manual — part 313
DTC P0117, P0118 ECT SENSOR
EC-437
[YD (WITHOUT EURO-OBD)]
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EC
DTC P0117, P0118 ECT SENSOR
PFP:22630
Description
EBS0154S
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>
*: This data is reference values and is measured between ECM terminal 51 (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
EBS0154T
The MI will not light up for these self-diagnoses.
DTC Confirmation Procedure
EBS0154U
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.
SEF594K
Engine coolant tempera-
ture
°
C (
°
F)
Voltage* (V)
Resistance (k
Ω
)
−
10 (14)
4.7
7.0 - 11.4
20 (68)
3.8
2.1 - 2.9
50 (122)
2.6
0.68 - 1.00
90 (194)
1.3
0.236 - 0.260
SEF012P
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P0117
Engine coolant tempera-
ture 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
Engine coolant tempera-
ture sensor circuit high
input
An excessively high voltage from the sensor is
sent to ECM.
EC-438
[YD (WITHOUT EURO-OBD)]
DTC P0117, P0118 ECT SENSOR
2.
Select “DATA MONITOR” mode with CONSULT-II.
3.
Wait at least 5 seconds.
4.
If DTC is detected, go to
EC-440, "Diagnostic Procedure"
.
SEF817Y
DTC P0117, P0118 ECT SENSOR
EC-439
[YD (WITHOUT EURO-OBD)]
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EC
Wiring Diagram
EBS0154V
MBWA0373E
EC-440
[YD (WITHOUT EURO-OBD)]
DTC P0117, P0118 ECT SENSOR
Diagnostic Procedure
EBS0154W
1.
CHECK GROUND CONNECTIONS
1.
Turn ignition switch OFF.
2.
Loosen and retighten engine ground screws. Refer to
.
OK or NG
OK
>> GO TO 2.
NG
>> Repair or replace ground connections.
2.
CHECK ECT SENSOR POWER SUPPLY CIRCUIT
1.
Disconnect engine coolant temperature sensor harness connec-
tor.
2.
Turn ignition switch ON.
3.
Check voltage between ECT sensor terminal 2 and ground with
CONSULT-II or tester.
OK or NG
OK
>> GO TO 3.
NG
>> Repair harness or connectors.
3.
CHECK ECT SENSOR GROUND CIRCUIT FOR OPEN AND SHORT
1.
Turn ignition switch OFF.
2.
Disconnect ECM harness connector.
3.
Check harness continuity between ECT sensor terminal 1 and ECM terminal 70. Refer to Wiring Diagram.
4.
Also check harness for short to ground and short to power.
OK or NG
OK
>> GO TO 4.
NG
>> Repair open circuit or short to ground or short to power in harness or connectors.
MBIB0915E
PBIB0374E
Voltage: Approximately 5.3V
PBIB0192E
Continuity should exist.
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