DTC Diagnosis Procedure
- CHECK DTC WITH COMBINATION METER
Refer to Diagnosis Description .
Is the inspection result normal?
YES
GO TO 2.
NO
Refer to Component Function Check .
- CHECK FUEL TANK TEMPERATURE SENSOR POWER SUPPLY CIRCUIT
- Turn ignition switch OFF.
- Disconnect "fuel level sensor unit and fuel pump" harness connector.
- Turn ignition switch ON.
- Check the voltage between "fuel level sensor unit and fuel pump" harness connector and ground.
Fuel level sensor unit and fuel pump
Ground
Voltage (V)
Connector
Terminal
C5
4
Ground
Approx. 5
Is the inspection result normal?
YES
GO TO 4.
NO
GO TO 3.
- DETECT MALFUNCTIONING PART
Check the following.
- Harness for open or short between ECM and "fuel level sensor unit and fuel pump"
- Loose or poor connection for each connector and harness
Repair open circuit, short to ground or short to power in harness or connector.
- CHECK FUEL TANK TEMPERATURE SENSOR GROUND CIRCUIT FOR OPEN AND SHORT
- Turn ignition switch OFF.
- Disconnect combination meter harness connector.
- Check the continuity between "fuel level sensor unit and fuel pump" harness connector and "combination meter" harness connector.
Fuel level sensor unit and fuel pump
Combination meter
Continuity
Connector
Terminal
Connector
Terminal
C5
5
M344
46
Existed
- Also check harness for short to ground and short to power.
Is the inspection result normal?
YES
GO TO 6.
NO
GO TO 5.
- DETECT MALFUNCTIONING PART
Check the following.
- Harness for open or short between "fuel level sensor unit and fuel pump" and "combination meter"
- Loose or poor connection for each connector and harness
Repair open circuit, short to ground or short to power in harness or connector.
- CHECK FUEL TANK TEMPERATURE SENSOR
Refer to Component Inspection .
Is the inspection result normal?
YES
GO TO 7.
NO
Replace "fuel level sensor unit and fuel pump". Refer to FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY : Removal & Installation .
- CHECK INTERMITTENT INCIDENT
Refer to Inspection .
INSPECTION END