Check Fuel Level Sensor

SYMPTOM CHART

Step	Check	Yes	No
1 CHECK COMBINATION METER. Drain fuel. Check the fuel indication status in the combination meter.	Does the fuel gauge needle indicate EMPTY and is the low fuel warning light blinking?	Go to step 4 .	Go to step 2 .
2 CHECK COMBINATION METER. Perform the self-diagnosis of combination meter. Ref. to SELF-DIAGNOSIS DISPLAY MODE , OPERATION, Combination Meter System.	Is operation normal?	Go to step 3 .	Replace the meter case assembly. Ref. to COMBINATION METER .
3 CHECK DIAGNOSTIC TROUBLE CODE (DTC). Prepare the Subaru Select Monitor kit. Turn the ignition switch to ON (engine OFF) and run the "PC application for Subaru Select Monitor". On «System Selection Menu» display, select {Integ. unit mode}. Select the {Diagnostic Code(s) Display}.	Is a DTC detected?	Perform the diagnosis according to DTC. Ref. to LIST , List of Diagnostic Trouble Code (DTC).	Go to step 4 .
4 CHECK HARNESS. Disconnect the connector of body integrated unit. Measure the resistance between body integrated unit connector and chassis ground. Connector & terminal (184) No. 17 - Chassis ground:	Is the resistance 2 - 96 Ω?	Go to step 5 . Go to step 9 . (If the step 1 is "Yes")	Repair or replace the harness.
5 CHECK COMMUNICATION BETWEEN BODY INTEGRATED UNIT AND COMBINATION METERS. Remove the fuel sub level sensor. H4 NA model: Ref. to REMOVAL , Fuel Sub Level Sensor. H4 turbo model: Ref. to REMOVAL , Fuel Sub Level Sensor. H6 model: Ref. to REMOVAL , Fuel Sub Level Sensor. Attach the approx. 100 Ω resistance to the fuel sub level sensor connector terminal, and short circuit to the chassis ground. Turn the ignition switch to ON. Connector & terminal (R59) No. 1 - Chassis ground:	Does the meter needle indicate EMPTY?	Go to step 7 .	Go to step 6 .
6 CHECK BODY INTEGRATED UNIT. Retain the condition in step 5. Select the {Fuel level resistance} from the {Integ. unit mode} using the Subaru Select Monitor.	Is approx. 100 Ω displayed in the data?	Go to step 11 .	Replace the body integrated unit. Ref. to REMOVAL , Body Integrated Unit.
7 CHECK COMMUNICATION BETWEEN BODY INTEGRATED UNIT AND COMBINATION METERS. Remove the fuel sub level sensor. H4 NA model: Ref. to REMOVAL , Fuel Sub Level Sensor. H4 turbo model: Ref. to REMOVAL , Fuel Sub Level Sensor. H6 model: Ref. to REMOVAL , Fuel Sub Level Sensor. Attach the approx. 2 - 6 Ω resistance to the fuel sub level sensor connector terminal, and short circuit to the chassis ground. Turn the ignition switch to ON. Connector & terminal (R59) No. 1 - Chassis ground:	Does the meter needle indicate FULL?	Go to step 9 .	Go to step 8 .
8 CHECK BODY INTEGRATED UNIT. Retain the condition in step 7. Select the {Fuel level resistance} from the {Integ. unit mode} using the Subaru Select Monitor.	Is the resistance approximately 2 to 6 Ω?	Go to step 11 .	Replace the body integrated unit. Ref. to REMOVAL , Body Integrated Unit.
9 CHECK FUEL SUB LEVEL SENSOR. Remove the fuel sub level sensor. H4 NA model: Ref. to REMOVAL , Fuel Sub Level Sensor. H4 turbo model: Ref. to REMOVAL , Fuel Sub Level Sensor. H6 model: Ref. to REMOVAL , Fuel Sub Level Sensor. Measure the resistance between the fuel sub level sensor connectors when the float is in FULL and EMPTY position. Connector & terminal (R59) No. 1 - No. 2:	Is the resistance 1.0 to 3.0 Ω (FULL) and 61 to 63 Ω (EMPTY)?	Go to step 10 .	Replace the fuel sub level sensor.
10 CHECK FUEL LEVEL SENSOR. Remove the fuel level sensor. H4 NA model: Ref. to REMOVAL , Fuel Level Sensor. H4 turbo model: Ref. to REMOVAL , Fuel Level Sensor. H6 model: Ref. to REMOVAL , Fuel Level Sensor. Measure the resistance between the fuel level sensor connectors when the float is in FULL and EMPTY position. Connector & terminal (R58) No. 1 - No. 4:	Is the resistance 1.0 to 3.0 Ω (FULL) and 31 to 33 Ω (EMPTY)?	Check the connection status of the harness and connector that may have a temporary poor contact.	Replace the fuel level sensor.
11 CHECK COMBINATION METER OPERATION. Remove the combination meter. Attach the combination meter to another vehicle on which the fuel gauge operates normally to check its operation.	Is the fuel gauge normal?	Replace the body integrated unit. Ref. to REMOVAL , Body Integrated Unit.	Replace the meter case assembly.