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Check Fuel Level Sensor

WARNING: This page is about a different car, the 2006 Subaru Baja. However, it is still accessible from the selected car via links, so may be relevant.
CHECK FUEL LEVEL SENSOR CHART

Step Check Yes No
1 CHECK FUEL LEVEL SENSOR. 
  1. Remove the fuel level sensor. < Ref. to REMOVAL , FUEL LEVEL SENSORS (H4SO). > < Ref. to REMOVAL , FUEL LEVEL SENSOR (H4DOTC). >
  2. Measure the resistance between the fuel level sensor terminals when setting the float to FULL and EMPTY position.

    Terminals 

    No. 3 - No. 6 

 Is the measured value 0.5 to 2.5 Ω at FULL or 52.5 to 54.5 Ω at EMPTY? Go to step 2.  Replace the fuel level sensor.
2 CHECK FUEL SUB LEVEL SENSOR. 
  1. Remove the fuel sub level sensor. < Ref. to REMOVAL , FUEL SUB LEVEL SENSOR (H4SO). > < Ref. to REMOVAL , FUEL SUB LEVEL SENSOR (H4DOTC). >
  2. Measure the resistance between the fuel sub level sensor terminals when setting the float to FULL and EMPTY position.

    Terminals 

    No. 1 - No.2 

 Is the measured value 0.5 to 2.5 Ω at FULL or 39.5 to 41.5 Ω at EMPTY? Go to step 3.  Replace the fuel sub level sensor.
3 CHECK HARNESS BETWEEN FUEL SUB LEVEL SENSOR AND COMBINATION METER. 
  1. Disconnect the connector from the combination meter.
  2. Measure the resistance between the fuel sub level sensor harness connector terminal and combination meter harness connector terminal.

    Connector & terminal 

    (R59) No. 1 - (I10) No. 3: 

 Is the measured value less than 10 Ω? Go to step 4.  Repair wiring harness.
4 CHECK HARNESS BETWEEN FUEL LEVEL SENSOR AND FUEL SUB LEVEL SENSOR. 
Measure the resistance between the fuel level sensor harness connector terminal and fuel sub level sensor harness connector terminal.
Connector & terminal 
(R58) No. 6 - (R59) No. 2: 		 Is the measured value less than 10 Ω? Go to step 5.  Repair wiring harness.
5 CHECK FUEL LEVEL SENSOR GROUND CIRCUIT. 
Measure the resistance between the fuel level sensor harness connector terminal and chassis ground.
Connector & terminal 
(R58) No. 3 - Chassis ground: 		 Is the measured value less than 10 Ω? Check the fuel gauge. < Ref. to REMOVAL , FUEL GAUGE. > Repair wiring harness.
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