Check Fuel Level Sensor

DIAGNOSTIC PROCEDURE CHART

Step	Check	Yes	No
1 CHECK COMMUNICATION ERROR DISPLAY. Turn the ignition switch to ON. Check that the error code is displayed in odo/trip meter. (Except for meter with MID)	Is the error code "Er xx" displayed on odo/trip meter? (Except for meter with MID) Or is the DTC of low speed LAN system detected?	Check the communication circuit. <Ref. to COMMUNICATION ERROR DISPLAY , INSPECTION, Combination Meter System .>	Go to step 2.
2 CHECK COMBINATION METER. Remove the fuel sub level sensor. <Ref. to REMOVAL , Fuel Level Sensor for H4SO.> <Ref. to REMOVAL , Fuel Level Sensor for H4DOTC.> <Ref. to REMOVAL , Fuel Level Sensor for H6DO.> Short the fuel sub level sensor connector terminal to the chassis ground using a suitable lead line wire with 100 Q. resistance connected between connector terminal and chassis ground. Turn the ignition switch to ON. Terminals (R59) No. 1 - Chassis ground:	Is the fuel gauge display in combination meter changed to FULL?	Go to step 3.	Check harness for open or short circuits, and if normal, replace the meter case assembly.
3 CHECK FUEL LEVEL SENSOR. Remove the fuel level sensor. <Ref. to REMOVAL , Fuel Level Sensor for H4SO.> <Ref. to REMOVAL , Fuel Level Sensor for H4DOTC.> <Ref. to REMOVAL , Fuel Level Sensor for H6DO.> Measure the resistance between fuel level sensor terminals when the float is in FULL or EMPTY position. Terminals (R58) No. 1 - No. 4:	Is the resistance 1.0 to 3.0 A (FULL) and 31 to 33 CI (EMPTY)?	Go to step 4.	Replace the fuel level sensor.
4 CHECK FUEL SUB LEVEL SENSOR. Remove the fuel sub level sensor. <Ref. to REMOVAL , Fuel Sub Level Sensor for H4SO.> <Ref. to REMOVAL , Fuel Sub Level Sensor for H4DOTC.> <Ref. to REMOVAL , Fuel Sub Level Sensor for H6DO.> Measure the resistance between fuel sub level sensor terminals when the float is in FULL or EMPTY position. Terminals (R59)No. 1 - No.2:	Is the resistance 1.0 to 3.0 Ω (FULL) and 61 to 63 Ω (EMPTY)?	Go to step 5.	Replace the fuel sub level sensor.
5 CHECK HARNESS BETWEEN FUEL SUB-LEVEL SENSOR AND BODY INTEGRATED UNIT. Disconnect the connector from body integrated unit. Check harness for open or short circuits between fuel sub level sensor harness connector terminal and body integrated unit harness connector terminal. Connector & terminal (R59) No. 1 - (B281) No. 19:	Is harness normal?	Go to step 6.	Repair the wiring harness.
6 CHECK HARNESS BETWEEN FUEL LEVEL SENSOR AND FUEL SUB LEVEL SENSOR. Check harness for open or short circuits between fuel level sensor harness connector terminal and fuel sub level sensor harness connector terminal. Connector & terminal (R58) No. 1 - (R59) No. 2:	Is harness normal?	Go to step 7.	Repair the wiring harness.
7 CHECK FUEL LEVEL SENSOR GROUND CIRCUIT. Check harness for open or short circuits between fuel level sensor harness connector terminal and chassis ground harness connector terminal. Connector & terminal (R58) No. 4 - Chassis ground:	Is harness normal?	Replace the meter case assembly.	Repair the wiring harness.