DTC Logic
DTC DETECTION LOGIC
DTC No. | CONSULT screen terms (Trouble diagnosis content) | DTC detecting condition | Possible cause | |
P0181 | FTT SENSOR (Fuel temperature sensor ″A″ circuit range/performance) | A) | Rationally incorrect voltage from the sensor is sent to ECM, compared with the voltage signals from ECT sensor and intake air temperature sensor. |
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B) | The comparison result of signals transmitted to ECM from each temperature sensor (IAT sensor, ECT sensor, EOT sensor, and FTT sensor) shows that the voltage signal of the FTT sensor is higher/lower than that of other temperature sensors when the engine is started with its cold state. |
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DTC CONFIRMATION PROCEDURE
1.INSPECTION START
Is it necessary to erase permanent DTC? YES >> GO TO 7.
NO >> GO TO 2.
2.PRECONDITIONING
If DTC CONFIRMATION PROCEDURE has been previously conducted, always perform the following procedure before conducting the next test.
>> GO TO 3.
3.PERFORM DTC CONFIRMATION PROCEDURE FOR MALFUNCTION A-1
Is 1st trip DTC detected? YES >> Proceed to EC-256, "Diagnosis Procedure".
NO >> GO TO 4.
4.CHECK ENGINE COOLANT TEMPERATURE
With CONSULT
With GST
Follow the procedure “With CONSULT” above.
“COOLANT TEMP/S” less than 60°C (140°F)? YES >> INSPECTION END
NO >> GO TO 5.
5.PERFORM DTC CONFIRMATION PROCEDURE FOR MALFUNCTION A-2
With CONSULT
With GST
Follow the procedure “With CONSULT” above.
Is 1st trip DTC detected? YES >> Proceed to EC-256, "Diagnosis Procedure".
NO >> GO TO 6.
6.PERFORM COMPONENT FUNCTION CHECK (FOR MALFUNCTION B)
Perform component function check. Refer to EC-255, "Component Function Check".
NOTE:
Use the component function check to check the overall function of the FTT sensor circuit. During this check, a 1st trip DTC might not be confirmed.
Is the inspection result normal? YES >> INSPECTION END
NO >> Proceed to EC-256, "Diagnosis Procedure".
7.PRECONDITIONING
If DTC CONFIRMATION PROCEDURE has been previously conducted, always perform the following procedure before conducting the next test
TESTING CONDITION:
>> GO TO 8.
8.PERFORM DTC CONFIRMATION PROCEDURE B
NOTE:
Cool the vehicle in an environment of ambient air temperature between −10В°C (14В°F) and 35В°C (95В°F).
CAUTION:
Never turn ignition switch ON during this procedure.
NOTE:
The vehicle must be cooled with the food open.
CAUTION:
Never turn ignition switch OFF during idling.
Is 1st trip DTC detected? YES >> Proceed to EC-256, "Diagnosis Procedure".
NO >> INSPECTION END
Component Function Check
1.CHECK FUEL TANK TEMPERATURE (FTT) SENSOR
Is the inspection result normal? YES >> Check intermittent incident. Refer to GI-39, "Intermittent Incident".
NO >> Proceed to EC-256, "Diagnosis Procedure".
Diagnosis Procedure
1.INSPECTION START
Confirm the detected malfunction (A or B). Refer to EC-254, "DTC Logic".
Which malfunction is detected? A >>GO TO 2.
B >>GO TO 6.
2.CHECK DTC WITH COMBINATION METER
Check DTC with combination meter. Refer to MWI-17, "CONSULT Function (METER/M&A)".
Is the inspection result normal? YES >> GO TO 3.
NO >> Proceed to MWI-58, "Diagnosis Procedure".
3.CHECK FUEL TANK TEMPERATURE (FTT) SENSOR POWER
Is the inspection result normal? YES >> GO TO 5.
NO >> GO TO 4.
4.CHECK FUEL TANK TEMPERATURE (FTT) SENSOR POWER SUPPLY CIRCUIT
Is the inspection result normal? YES >> Perform the trouble diagnosis for power supply circuit.
NO >> Repair or replace error-detected parts.
5.CHECK FTT SENSOR GROUND CIRCUIT
Is the inspection result normal? YES >> GO TO 6.
NO >> Repair or replace error-detected parts.
6.CHECK FUEL TANK TEMPERATURE (FTT) SENSOR
Check the FTT sensor. Refer to EC-257, "Component Inspection".
Is the inspection result normal? YES >> Check intermittent incident. Refer to GI-39, "Intermittent Incident".
NO >> Replace fuel level sensor unit and fuel pump. Refer to FL-6, "Removal and Installation".
Component Inspection
1.CHECK FUEL TANK TEMPERATURE (FTT) SENSOR
Is the inspection result normal? YES >> INSPECTION END
NO >> Replace fuel level sensor unit and fuel pump. Refer to FL-6, "Removal and Installation".
U1010 Control unit (CAN)
Description
Initial diagnosis of ABS actuator and electric unit (control
unit)
DTC Logic
DTC DETECTION LOGIC
DTC
Items
(CONSULT screen terms)
DTC detection condition
Possible cause
U1010
CONTROL UNIT (CAN)
When detecting error during the initial diagnosis
...
System description
Component parts
Component parts location
Front tweeter LH
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Front tweeter rh
Microphone
Front door speaker lh
Front door speaker rh
Rear speaker rh
Rear speaker lh
Antenna amp.
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Window antenna
Usb interface
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Checking engine coolant level
Check the coolant level in the reservoir when
the engine is cold. If the coolant level is below
the MIN level B , add coolant to the MAX level
A . If the reservoir is empty, check the coolant
level in the radiator when the engine is cold. If
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