Nissan Terrano model r20 series 2004. Instruction — part 168
Component Inspection
ACCELERATOR POSITION SENSOR
1. Disconnect accelerator work unit harness connector.
2. Make sure that resistance between terminals
q
3
and
q
4
changes
when opening throttle valve instructionly.
Throttle valve conditions
Resistance [at 25°C (77°F)]
Completely closed
Approximately 1.2 k
Ω
Partially open
1.2 - 1.9 k
Ω
Completely open
Approximately 1.9 k
Ω
If NG, replace accelerator pedal assembly.
CAUTION
I
Do not disassemble accelerator pedal assembly.
ACCELERATOR POSITION SWITCH
1. Disconnect accelerator work unit harness connector.
2. Check continuity between terminals
q
5
and
q
6
.
Conditions
Continuity
Accelerator pedal released
No
Accelerator pedal depressed
Yes
If NG, replace accelerator pedal assembly.
CAUTION:
I
Do not disassemble accelerator pedal assembly.
YEC699A
YEC700A
DTC P0120 ACCEL POS SENSOR
TD27Ti
EC-394
Component Description
FUEL TEMPERATURE SENSOR (FTS)
The fuel temperature sensor is used to detect the fuel temperature
in the injection pump. The sensor modifies a voltage signal from the
ECM. The modified signal returns to the ECM as the fuel tempera-
ture input. The sensor uses a thermistor which is sensitive to the
change in temperature. The electrical resistance of the thermistor
decreases as temperature increases.
The sensor is built into the inside electrical circuit of the injection
pump.
On Board Diagnosis Logic
DTC
Malfunction is detected when ...
Check Items
(Possible Cause)
P0180
0402
I
An excessively high or low voltage from the sensor is
detected by ECM.
I
Harness or connectors
(The sensor circuit is open or short-circuited.)
I
Fuel temperature sensor
DTC Confirmation Procedure
WITH CONSULT-II
1) Turn ignition switch to “ON” position.
2) Select “DATA MONITOR” mode with CONSULT-II.
3) Wait at least 5 seconds.
WITHOUT CONSULT-II
1) Turn ignition switch to “ON” position and wait at least 5 sec-
onds.
2) Turn ignition switch to “LOCK” position, wait at least 5 seconds
and then turn to “ON” position.
3) Perform “Diagnostic Test Mode II” (Self-diagnostic results).
DTC P0180 FUEL TEMP SENSOR
TD27Ti
EC-395
Wiring Diagram
YEC677A
DTC P0180 FUEL TEMP SENSOR
TD27Ti
EC-396
Diagnostic Procedure
INSPECTION START
CHECK POWER SUPPLY.
1. Turn ignition switch to “LOCK” position.
2. Disconnect electrical fuel injection
pump harness connector.
3. Turn ignition switch to “ON” position.
4. Check voltage between electronic con-
trol fuel injection pump (Fuel tempera-
ture sensor) harness connector termi-
nal
q
6
and engine ground with CON-
SULT-II or tester.
Voltage:
Approximately 4.9V
OK
E
NG
Check the following:
I
Harness for open or
short-circuit between
ECM and electronic con-
trol fuel injection pump
(fuel temperature sen-
sor)
If NG, repair harness or
connectors.
CHECK GROUND CIRCUIT.
1. Turn ignition switch to “LOCK” position.
2. Check harness continuity between
electronic control fuel injection pump
(fuel temperature sensor) connector
terminal
q
5
and ECM connector
terminal
335
. Refer to wiring dia-
gram.
Continuity should exist.
If OK, check harness for short-circuit.
OK
E
NG
Check the following:
I
Harness for open or
short-circuit between
ECM and electronic con-
trol fuel injection pump
(fuel temperature sen-
sor).
If NG, repair harness or
connectors.
CHECK COMPONENT
[Electronic control fuel injection pump
(Fuel temperature sensor)].
Refer to “COMPONENT INSPECTION” on
page EC-398.
OK
E
NG
Have the injection pump
assembly serviced by an
authorised service repre-
sentative.
Disconnect and reconnect harness con-
nectors in the circuits. Then retest.
Trouble is not fixed.
Check ECM pin terminals for damage and
check the connection of ECM harness
connector. Reconnect ECM harness con-
nector and retest.
INSPECTION END
YEC248A
YEC254A
H
H
H
H
H
H
DTC P0180 FUEL TEMP SENSOR
TD27Ti
EC-397
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст