Nissan Primera P11. Instruction — part 141
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-
QG-123.
With GST
Follow the procedure “With CONSULT-II” above.
NEF068A
DTC P0115 ENGINE COOLANT TEMPERATURE SENSOR
(ECTS) (CIRCUIT)
QG16
I
18DE
DTC Confirmation Procedure
EC-121
Wiring Diagram
NCEC0076
YEC261
DTC P0115 ENGINE COOLANT TEMPERATURE SENSOR
(ECTS) (CIRCUIT)
QG16
I
18DE
Wiring Diagram
EC-122
Diagnostic Procedure
NCEC0077
1
CHECK POWER SUPPLY
1. Turn ignition switch “OFF”.
2. Disconnect engine coolant temperature sensor harness connector.
SEF999W
3. Turn ignition switch “ON”.
4. Check voltage between terminal 2 and ground with CONSULT-II or tester.
SEF997W
Voltage: Approximately 5V
OK or NG
OK
©
GO TO 3.
NG
©
GO TO 2.
2
DETECT MALFUNCTIONING PART
Check the harness for open or short between ECM and engine coolant temperature sensor.
©
Repair harness or connectors.
3
CHECK GROUND CIRCUIT
1. Turn ignition switch “OFF”.
2. Check harness continuity between engine coolant temperature sensor harness connector terminal 1 and engine ground.
Refer to wiring diagram.
Continuity should exist.
3. Also check harness for short to ground and short to power.
OK or NG
OK
©
GO TO 5.
NG
©
GO TO 4.
4
DETECT MALFUNCTIONING PART
Check the following.
I
Harness for open or short between ECM and engine coolant temperature sensor
©
Repair open circuit or short to ground or short to power in harness or connectors.
DTC P0115 ENGINE COOLANT TEMPERATURE SENSOR
(ECTS) (CIRCUIT)
QG16
I
18DE
Diagnostic Procedure
EC-123
5
CHECK ENGINE COOLANT TEMPERATURE SENSOR
Refer to “Component Inspection”, EC-QG-124.
OK or NG
OK
©
GO TO 6.
NG
©
Replace engine coolant temperature sensor.
6
CHECK INTERMITTENT INCIDENT
Perform “TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT”, EC-QG-102.
©
INSPECTION END
Component Inspection
NCEC0078
ENGINE COOLANT TEMPERATURE SENSOR
NCEC0078S01
Check resistance as shown in the figure.
<Reference data>
Temperature °C (°F)
Resistance k
Ω
20 (68)
2.1 - 2.9
50 (122)
0.68 - 1.00
90 (194)
0.236 - 0.260
If NG, replace engine coolant temperature sensor.
SEF152P
SEF012P
DTC P0115 ENGINE COOLANT TEMPERATURE SENSOR
(ECTS) (CIRCUIT)
QG16
I
18DE
Diagnostic Procedure (Cont’d)
EC-124
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