Infiniti F50. Manual — part 412
DTC P0182, P0183 FTT SENSOR
EC-289
C
D
E
F
G
H
I
J
K
L
M
A
EC
Diagnostic Procedure
EBS00MD5
1.
CHECK FUEL TANK TEMPERATURE SENSOR POWER SUPPLY CIRCUIT
1.
Turn ignition switch “OFF”.
2.
Disconnect fuel level sensor unit and fuel pump harness con-
nector.
3.
Turn ignition switch “ON”.
4.
Check voltage between fuel level sensor unit and fuel pump ter-
minal 4 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 B211, M141
●
Harness connectors M135, F105
●
Harness for open or short between ECM and fuel level sensor unit and fuel pump
>> Repair harness or connector.
3.
CHECK FUEL TANK TEMPERATURE SENSOR GROUND CIRCUIT FOR OPEN AND SHORT
1.
Turn ignition switch “OFF”.
2.
Check harness continuity between fuel level sensor unit and fuel pump terminal 2 and body ground.
Refer to Wiring Diagram.
3.
Also check harness for short to power.
OK or NG
OK
>> GO TO 5.
NG
>> GO TO 4.
PBIB1249E
Voltage: Approximately 5V
PBIB0316E
Continuity should exist.
EC-290
DTC P0182, P0183 FTT SENSOR
4.
DETECT MALFUNCTIONING PART
Check the following.
●
Harness connectors B211, M141
●
Harness connectors M135, F105
●
Joint connector-30
●
Harness for open or short between ECM and fuel level sensor unit and fuel pump
>> Repair open circuit or short to power in harness or connector.
5.
CHECK FUEL TANK TEMPERATURE SENSOR
Refer to
EC-289, "Diagnostic Procedure"
OK or NG
OK
>> GO TO 6.
NG
>> Replace fuel level sensor unit.
6.
CHECK INTERMITTENT INCIDENT
Refer to
EC-132, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"
.
>> INSPECTION END
Component Inspection
EBS00MD6
FUEL TANK TEMPERATURE SENSOR
1.
Remove fuel level sensor unit.
2.
Check resistance between fuel level sensor unit and fuel pump
terminals 4 and 2 by heating with hot water or heat gun as
shown in the figure.
Removal and Installation
EBS00MD7
FUEL TANK TEMPERATURE SENSOR
Refer to
FL-3, "FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY"
Temperature
°
C (
°
F)
Resistance k
Ω
20 (68)
2.3 - 2.7
50 (122)
0.79 - 0.90
PBIB0200E
DTC P0222, P0223 TP SENSOR
EC-291
C
D
E
F
G
H
I
J
K
L
M
A
EC
DTC P0222, P0223 TP SENSOR
PFP:16119
Component Description
EBS00MD8
Electric throttle control actuator consists of throttle control motor,
accelerator pedal position sensor, throttle position sensor, etc. The
throttle position sensor responds to the throttle valve movement.
The throttle position sensor has the two sensors. These sensors are
a kind of potentiometers which transform the throttle valve position
into output voltage, and emit the voltage signal to the ECM. In addi-
tion, these sensors detect the opening and closing speed of the
throttle valve and feed the voltage signals to the ECM. The ECM
judges the current opening angle of the throttle valve from these sig-
nals and the ECM controls the throttle control motor to make the
throttle valve opening angle properly in response to driving condi-
tion.
CONSULT-II Reference Value in Data Monitor Mode
EBS00MD9
Specification data are reference values.
*: Throttle position sensor 2 signal is converted by ECM internally. Thus, it differs from ECM terminal voltage signal.
On Board Diagnosis Logic
EBS00MDA
These self-diagnoses have the one trip detection logic.
FAIL-SAFE MODE
When the malfunction is detected, ECM enters fail-safe mode an the MIL lights up.
DTC Confirmation Procedure
EBS00MDB
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.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 10V at idle.
PBIB0145E
MONITOR ITEM
CONDITION
SPECIFICATION
THRTL SEN1
THRTL SEN2*
●
Ignition switch: ON
(Engine stopped)
Accelerator pedal: Fully released
More than 0.36V
●
Selector lever: D
Accelerator pedal: Fully depressed
Less than 4.75V
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P0222
0222
Throttle position sensor 1
circuit low input
An excessively low voltage from the TP sensor 1
is sent to ECM.
●
Harness or connectors
(The TP sensor 1 circuit is open or
shorted.)
●
Electric throttle control actuator
(TP sensor 1)
P0223
0223
Throttle position sensor 1
circuit high input
An excessively high voltage from the TP sensor 1
is sent to ECM.
Engine operation condition in fail-safe mode
The ECM controls the electric throttle control actuator in regulating the throttle opening in order for the idle position to be within +10
degrees.
The ECM regulates the opening speed of the throttle valve to be slower than the normal condition.
So, the acceleration will be poor.
EC-292
DTC P0222, P0223 TP SENSOR
WITH CONSULT-II
1.
Turn ignition switch “ON”.
2.
Select “DATA MONITOR” mode with CONSULT-II.
3.
Start engine and let it idle for 1 second.
4.
If DTC is detected, go to
EC-294, "Diagnostic Procedure"
.
WITH GST
Follow the procedure “WITH CONSULT-II” above.
SEF058Y
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