Infiniti G20 (P11). Manual — part 219
If the result is OK, go to following step.
4)
Check “COOLAN TEMP/S” signal.
If the signal is less than 60°C (140°F), the result will be OK.
If the signal is above 60°C (140°F), go to the following step.
5)
Cool engine down until “COOLAN TEMP/S” signal is less than
60°C (140°F).
6)
Wait at least 10 seconds.
7)
If 1st trip DTC is detected, go to “Diagnostic Procedure”,
EC-289.
With GST
Follow the procedure “With CONSULT-II” above.
GI
MA
EM
LC
FE
CL
MT
AT
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
DTC P0180 FUEL TANK TEMPERATURE SENSOR
DTC Confirmation Procedure (Cont’d)
EC-287
Wiring Diagram
NCEC0199
TEC707
DTC P0180 FUEL TANK TEMPERATURE SENSOR
Wiring Diagram
EC-288
Diagnostic Procedure
NCEC0200
1
CHECK POWER SUPPLY
1. Turn ignition switch “OFF”.
2. Disconnect fuel level sensor unit harness connector.
SEF299WA
3. Turn ignition switch “ON”.
4. Check voltage between fuel level sensor unit terminal 2 and ground with CONSULT-II or tester.
SEF936X
OK or NG
OK
©
GO TO 3.
NG
©
GO TO 2.
2
DETECT MALFUNCTIONING PART
Check the following.
I
Harness connectors B102, M74
I
Harness connectors M49, F23
I
Harness for open or short between ECM and fuel level sensor unit
©
Repair harness or connector.
3
CHECK GROUND CIRCUIT
1. Turn ignition switch “OFF”.
2. Check harness continuity between fuel level sensor unit terminal 1 and body ground.
Refer to Wiring Diagram.
Continuity should exist.
3. Also check harness for short to power.
OK or NG
OK
©
GO TO 4.
NG
©
Repair open circuit or short to power in harness or connectors.
GI
MA
EM
LC
FE
CL
MT
AT
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
DTC P0180 FUEL TANK TEMPERATURE SENSOR
Diagnostic Procedure
EC-289
4
CHECK FUEL TANK TEMPERATURE SENSOR
Refer to “Component Inspection”, EC-290.
OK or NG
OK
©
GO TO 5.
NG
©
Replace fuel tank temperature sensor.
5
CHECK INTERMITTENT INCIDENT
Perform “TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT”, EC-146.
©
INSPECTION END
SEF325Z
Component Inspection
NCEC0201
FUEL TANK TEMPERATURE SENSOR
NCEC0201S01
Check resistance by heating with hot water or heat gun as shown
in the figure.
Temperature °C (°F)
Resistance k
Ω
20 (68)
2.3 - 2.7
50 (122)
0.79 - 0.90
If NG, replace fuel tank temperature sensor.
DTC P0180 FUEL TANK TEMPERATURE SENSOR
Diagnostic Procedure (Cont’d)
EC-290
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