Nissan Frontier D22. Instruction — part 561
DTC P0117, P0118 ECT SENSOR
EC-1347
[VG33ER]
C
D
E
F
G
H
I
J
K
L
M
A
EC
Wiring Diagram
UBS00DTZ
BBWA0508E
EC-1348
[VG33ER]
DTC P0117, P0118 ECT SENSOR
Diagnostic Procedure
UBS00DU0
1.
CHECK ECTS POWER SUPPLY CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect engine coolant temperature (ECT) sensor harness
connector.
3.
Turn ignition switch ON.
4.
Check voltage between ECT sensor terminal 1 and ground with
CONSULT-II or tester.
OK or NG
OK
>> GO TO 3.
NG
>> GO TO 2.
2.
DETECT MALFUNCTIONING PART
Check the following.
●
Harness connectors F38, F102
●
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.
3.
CHECK ECT SENSOR GROUND CIRCUIT FOR OPEN AND SHORT
1.
Turn ignition switch OFF.
2.
Check harness continuity between ECT sensor terminal 2 and engine ground.
Refer to Wiring Diagram.
3.
Also check harness for short to power.
OK or NG
OK
>> GO TO 5.
NG
>> GO TO 4.
4.
DETECT MALFUNCTIONING PART
Check the following.
●
Harness connectors F38, F102
●
Harness for open or short between ECM and engine coolant temperature sensor
>> Repair open circuit or short to power in harness or connectors.
AEC643A
Voltage: Approximately 5V
SEF206W
Continuity should exist.
DTC P0117, P0118 ECT SENSOR
EC-1349
[VG33ER]
C
D
E
F
G
H
I
J
K
L
M
A
EC
5.
CHECK ENGINE COOLANT TEMPERATURE SENSOR
Refer to
EC-1349, "Component Inspection"
OK or NG
OK
>> GO TO 6.
NG
>> Replace engine coolant temperature sensor.
6.
CHECK INTERMITTENT INCIDENT
Refer to
EC-1297, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"
>> INSPECTION END.
Component Inspection
UBS00DU1
ENGINE COOLANT TEMPERATURE SENSOR
Check resistance as shown in the figure.
<Reference data>
Removal and Installation
UBS00DU2
ENGINE COOLANT TEMPERATURE SENSOR
Refer to
EM-80, "OUTER COMPONENT PARTS"
.
SEF152P
Temperature
°C (°F)
Resistance k
Ω
20 (68)
2.1 - 2.9
50 (122)
0.68 - 1.00
90 (194)
0.236 - 0.260
SEF012P
EC-1350
[VG33ER]
DTC P0121 TP SENSOR
DTC P0121 TP SENSOR
PFP:16119
Component Description
UBS00DU3
NOTE:
If DTC P0121 is displayed with DTC P0510, first perform the trouble diagnosis for DTC P0510. Refer to
.
The throttle position sensor responds to the accelerator pedal movement. This sensor is a kind of potentiome-
ter which transforms the throttle position into output voltage, and emits the voltage signal to the ECM. In addi-
tion, the sensor detects the opening and closing speed of the throttle valve and feeds the voltage signal to the
ECM.
Idle position of the throttle valve is determined by the ECM receiving the signal from the throttle position sen-
sor. This sensor controls engine operation such as fuel cut. On the other hand, the “Wide open and closed
throttle position switch”, which is built into the throttle position sensor unit, is not used for engine control.
CONSULT-II Reference Value in Data Monitor Mode
UBS00DU4
Specification data are reference values.
SEC299C
MONITOR ITEM
CONDITION
SPECIFICATION
THRTL POS SEN
●
Engine: After warming up, idle the
engine
Throttle valve: fully closed
0.15 - 0.85V
●
Engine: After warming up
●
Ignition switch: ON
(Engine stopped)
Throttle valve: fully opened
3.5 - 4.7V
ABSOL TH·P/S
●
Engine: After warming up
●
Ignition switch: ON
●
More than -40.0 kpa (-300 mmHg,
-11.81 inHg) of vacuum is applied
to the throttle opener with a hand
vacuum pump.
Throttle valve: fully closed
0.0%
●
Engine: After warming up
●
Ignition switch: ON
(Engine stopped)
Throttle valve: fully opened
Approx. 80%
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