P0461

ON BOARD DIAGNOSTIC LOGIC
Driving long distances naturally affects the fuel gauge level. This diagnosis detects the fuel gauge malfunction of the gauge not moving even after a long distance has been driven.

OVERALL FUNCTION CHECK
Use this procedure to check the overall function of the fuel level sensor function. During this check, a 1st trip DTC might not be confirmed.

WARNING: When performing following procedure, be sure to observe the handling of the fuel. Refer to "WARNING" and "CAUTION", "Fuel Tank".

TESTING CONDITION:
Before starting overall function check, preparation of draining fuel and refilling fuel is required.

NOTE:
- Start from step 7 using CONSULT-II if it appears impossible to drain 30 (7-7/8 US gal, 6-5/8 Imp gal) or more.
- Be careful not to discharge battery when performing following procedure.

PREPARATION:
1. Prepare a fuel container and a spare hose.
2. Release fuel pressure from fuel line, refer to "Fuel Pressure Release".
3. Remove the fuel feed hose on the fuel level sensor unit.
4. Connect a spare fuel hose where the fuel feed hose was removed and the other side into the fuel container.




With Consult
1. Turn ignition switch "OFF" and wait at least 5 seconds then turn "ON ".
2. Select "FUEL LEVEL SE" in "DATA MONITOR" mode with CONSULT-II.
3. Check "FUEL LEVEL SE" output voltage and note it.
4. Select "FUEL PUMP" in "ACTIVE TEST" mode with CONSULT-II.

NOTE: If "FUEL LEVEL SE" changes more than 0.03V which was noted at step 3, stop draining or refilling fuel because the test result will be OK.

5. Touch "ON" and drain approximately 30 liters (7-7/8 US gal, 6-5/8 Imp gal) of fuel, and then stop it.
6. Check "FUEL LEVEL SE" output voltage and note it.
7. Fill 30 liters (7-7/8 US gal, 6-5/8 Imp gal) of fuel into the fuel tank.
8. Check "FUEL LEVEL SE" output voltage and confirm whether the voltage changes more than 0.03V at step 5.
If NG, check component of fuel level sensor. Refer to "METERS AND GAUGES".

OR




With Generic Scan Tools
1. Turn ignition switch "OFF ".
2. Set voltmeters probe between ECM terminal (45) (fuel level sensor output signal) and ground.
3. Turn ignition switch "ON".
4. Check output voltage of fuel level sensor at ECM terminal (45) and note it.

NOTE: If "FUEL LEVEL SE" changes more than 0.03V which was noted at step 4, stop draining or refilling fuel because the test result will be OK.

5. Drain fuel by 30 (7-7/8 US gal, 6-5/8 Imp gal) from the fuel tank using proper equipment.
6. Fill 30 liters (7-7/8 US gal, 6-5/8 Imp gal) of fuel into the fuel tank.
7. Check the output voltage of fuel level sensor at ECM terminal that whether the voltage changes more than 0.03V at the step 4.
If NG, check component of fuel level sensor, refer to "METERS AND GAUGES".