METER / GAUGE SYSTEM Fuel Receiver Gauge Display Malfunction

DESCRIPTION

1. FUEL RECEIVER GAUGE OPERATION

   
   

   1. OPERATION

      The combination meter assembly uses the fuel sender gauge assembly and the fuel injection volume signal from the ECM to detect the amount of fuel remaining in the fuel tank assembly. There are 2 types of the fuel sender gauge assemblies available. One type detects the amount of fuel remaining using a variable resistor and other type detects the amount of fuel remaining using a Hall IC.

      
      

      1. Variable resistor type:

         The fuel sender gauge assembly has a variable resistor whose resistance changes according to the amount of fuel remaining. The fuel sender gauge assembly receives voltage from the combination meter assembly and changes the voltage based on the resistance that changes according to the amount of fuel remaining in the fuel tank assembly. The combination meter assembly receives a fuel injection volume signal from the ECM and detects the voltage between the variable resistor and the resistor in the combination meter assembly, and operates the fuel receiver gauge.

      2. Hall IC type:

         The Hall IC built into the fuel sender gauge assembly changes the output voltage according to the amount of fuel remaining. The combination meter assembly detects the voltage output from the fuel sender gauge assembly, and operates the fuel receiver gauge.

   2. FUEL RECEIVER GAUGE READING

      
      

      1. During normal driving:

         As the fuel level in the fuel tank assembly changes when driving on a hill or applying brakes, the fuel receiver gauge reading is updated according to the fuel injection volume during normal driving. However, as the fuel injection volume measurement has a margin of error, the value is indicated after correction by input values from the fuel sender gauge assembly.

      2. During refueling:

         The fuel level in the fuel tank assembly rises rapidly when fuel is added. If the averaging process that is used during normal driving is used in this case, the fuel receiver gauge reading cannot be updated promptly. Therefore, when it is judged that fuel is being added to the vehicle based on the shift lever position and changes in the fuel level, output values from the fuel sender gauge assembly are immediately reflected in the fuel receiver gauge reading. This control is called refueling judgment.

   3. REFUELING JUDGMENT CONDITIONS

      Note

      Add fuel with the ignition switch off to ensure safety and to enable refueling judgment so that an appropriate fuel receiver gauge reading is obtained. If it is necessary to add fuel with the ignition switch ON, move the shift lever to P or N.

      
      

      1. Normal judgment condition (When normal refueling method is used)

         With the ignition switch off, the fuel sender gauge assembly detects a change of 5.0 liters (5.3 US qts, 4.4 lmp. qts) or more in the fuel level.

      2. Other judgment conditions (When other refueling method is used)

         Any of the following conditions is met:

         
         

         • With the vehicle and engine stopped and the ignition switch ON, the fuel sender gauge assembly detects a change of 5.0 liters (5.3 US qts, 4.4 lmp. qts) or more in the fuel level.

         • With the vehicle stopped, the engine running, the ignition switch ON and the shift lever in P or N, the fuel sender gauge assembly detects a change of 5.0 liters (5.3 US qts, 4.4 lmp. qts) or more in the fuel level.

         • With the vehicle stopped, the engine running, the ignition switch ON and the shift lever in any driving position, the fuel sender gauge assembly detects a change of 15.0 liters (15.9 US qts, 13.2 Imp. qts) or more in the fuel level.

   4. PRECAUTION FOR REFUELING

      The fuel sender gauge assembly cannot detect changes in fuel level within certain ranges (around points E and F). Therefore, even though 5.0 liters (5.3 US qts, 4.4 Imp. qts) or more of fuel is added, refueling judgment may not be performed and the fuel receiver gauge reading may not change when fuel level is within such ranges.

   5. FORCED RESET OF FUEL RECEIVER GAUGE

      When driving at 20 km/h (12 mph) or more, if the output value from the fuel sender gauge assembly is different from the fuel receiver gauge reading by 15.0 liters (15.9 US qts, 13.2 Imp. qts) or more for approximately 2 minutes, the output value from the fuel sender gauge assembly is immediately reflected in the fuel receiver gauge reading to compensate for a situation when refueling judgment cannot be made.

WIRING DIAGRAM

1. for 1AR-FE

   

2. for 2GR-FKS

   

CAUTION / NOTICE / HINT

PROCEDURE

1. CHECK SYMPTOMS

   
   

   1. Ask the customer about the problem symptoms.

      Result

      Result Proceed to Malfunction occurs when adding fuel (Even after adding fuel, reading does not increase at all or increases very slowly, etc.) A Malfunction occurs during normal driving (The reading does not change, decreases quickly or decreases when the vehicle is not being driven, etc.) (The problem symptom recurs) B Malfunction occurs during normal driving (The reading does not change, decreases quickly or decreases when the vehicle is not being driven, etc.) (The problem symptom does not recur) C

   
   

   B

   PERFORM ACTIVE TEST USING GTS (FUEL METER OPERATION) Click here

   C

   CHECK FOR DTC Click here

   A

2. PERFORM ACTIVE TEST USING GTS (FUEL METER OPERATION)

   
   

   1. Connect the GTS to the DLC3.

   2. Turn the ignition switch to ON.

   3. Turn the GTS on.

   4. Enter following menus: Body Electrical / Combination Meter / Active Test.

   5. Check the operation by referring to the table below.

      
      Body Electrical > Combination Meter > Active Test

      Tester Display	Measurement Item	Control Range	Diagnostic Note
      Fuel Meter Operation	Fuel receiver gauge	OFF, Sender E, Empty, Warning, 1/4, 1/2, 3/4, Full or Sender F	-

      
      Body Electrical > Combination Meter > Active Test

      Tester Display
      Fuel Meter Operation

      OK
      Fuel receiver gauge indication is normal.

      Result
      Proceed to OK NG

   
   

   NG

   REPLACE COMBINATION METER ASSEMBLY Click here

   OK

3. CHECK FOR DTC

   
   

   1. Check if SFI System DTCs are output.

      for 1AR-FE: Click here

      for 2GR-FKS: Click here

      
      Powertrain > Engine > Trouble Codes

      Result
      Result Proceed to SFI system DTCs are not output A SFI system DTCs are output B

   
   

   B

   GO TO SFI SYSTEM for 1AR-FE: Click here GO TO SFI SYSTEM for 2GR-FKS: Click here

   A

4. CHECK FOR DTC

   
   

   1. Check if Vehicle Stability Control System DTCs are output.

      Click here

      
      Chassis > ABS/VSC/TRC > Trouble Codes

      Result
      Result Proceed to Vehicle stability control system DTCs are not output A Vehicle stability control system DTCs are output B

   
   

   B

   GO TO VEHICLE STABILITY CONTROL SYSTEM Click here

   A

5. CHECK FUEL RECEIVER GAUGE OPERATION BY ADDING FUEL

   
   

   1. Record the fuel receiver gauge reading.

   2. If the fuel tank assembly is almost full, drain 20 liters or more of fuel. (This is not necessary when the fuel tank assembly is sufficiently below full.)

   3. Disconnect the cable from the negative (-) battery terminal to reset the fuel receiver gauge.

      Tech Tips

      Check that the ignition switch is turned off before disconnecting the cable from the negative (-) battery terminal.

   4. Connect the cable to the negative (-) battery terminal and turn the ignition switch to ON.

   5. Check that the fuel receiver gauge has been reset.

   6. Drive the vehicle at 1.75 km/h or more, then move the shift lever to P and turn the ignition switch off.

   7. Add 5.0 liters or more of fuel, turn the ignition switch to ON, and check that the fuel receiver gauge reading increases in proportion to the amount of fuel added.

      Result
      Result Proceed to Fuel receiver gauge reading increases in proportion to the amount of fuel added A Fuel receiver gauge reading does not change even when fuel is added B

   
   

   B

   GO TO STEP 7 Click here

   A

6. INSPECT FUEL TANK ASSEMBLY

   Tech Tips

   Inspect the fuel tank assembly for deformation, foreign matter or an improperly installed fuel receiver gauge, as this may be the cause of the fuel receiver gauge malfunction.

   
   

   1. Visually check the fuel tank assembly for any abnormalities.

   2. Check if there is an excessive amount of foreign matter in the fuel tank assembly.

   3. Check the installation condition of the fuel tank assembly and fuel sender gauge assembly.

      Result
      Result Proceed to Normal A Appearance of the fuel tank assembly is abnormal B There is an excessive amount of foreign matter in the fuel tank assembly C The fuel tank assembly or fuel sender gauge assembly is not installed correctly D

   
   

   B

   REPLACE FUEL TANK ASSEMBLY for 1AR-FE: Click here REPLACE FUEL TANK ASSEMBLY for 2GR-FKS: Click here

   C

   CLEAN INSIDE OF FUEL TANK ASSEMBLY

   D

   INSTALL FUEL TANK ASSEMBLY OR FUEL SENDER GAUGE ASSEMBLY CORRECTLY

   A

7. READ VALUE USING GTS (FUEL INPUT)

   
   

   1. Connect the GTS to the DLC3.

   2. Turn the ignition switch to ON.

   3. Turn the GTS on.

   4. Enter following menus: Body Electrical / Combination Meter / Data List.

   5. Check the values by referring to the table below.

      
      Body Electrical > Combination Meter > Data List

      Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
      Fuel Input	Fuel input	Min.: 0 L, Max.: 127.5 L	Fuel receiver gauge indicates F: 64.8 L Fuel receiver gauge indicates 3/4: 51.6 L Fuel receiver gauge indicates 1/2: 36.0 L Fuel receiver gauge indicates 1/4: 20.4 L Fuel receiver gauge indicates E: 7.2 L	Unit: Liter

      
      Body Electrical > Combination Meter > Data List

      Tester Display
      Fuel Input

      Result
      Result Proceed to Fuel level data displayed on the GTS is almost the same as the fuel receiver gauge indication A Fuel level data displayed on the GTS differs from the fuel receiver gauge indication B

   
   

   B

   REPLACE COMBINATION METER ASSEMBLY Click here

   A

8. CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - FUEL SUCTION TUBE WITH PUMP AND GAUGE ASSEMBLY)

   
   

   1. for 1AR-FE

      
      

      1. Disconnect the F126 combination meter assembly connector.

      2. Disconnect the M9 fuel suction tube with pump and gauge assembly connector.

      3. Measure the resistance according to the value(s) in the table below.

         Standard Resistance
         Tester Connection Condition Specified Condition M9-2 (FS) - F126-4 (FR) Always Below 1 Ω M9-3 (FE) - F126-23 (FE) Always Below 1 Ω M9-2 (FS) or F126-4 (FR) - Body ground Always 10 kΩ or higher M9-3 (FE) or F126-23 (FE) - Body ground Always 10 kΩ or higher

   2. for 2GR-FKS

      
      

      1. Disconnect the F126 combination meter assembly connector.

      2. Disconnect the M49 fuel suction tube with pump and gauge assembly connector.

      3. Measure the resistance according to the value(s) in the table below.

         Standard Resistance
         Tester Connection Condition Specified Condition M49-3 (S) - F126-4 (FR) Always Below 1 Ω M49-2 (FE) - F126-23 (FE) Always Below 1 Ω M49-1 (FV) - F126-3 (FV) Always Below 1 Ω M49-3 (S) or F126-4 (FR) - Body ground Always 10 kΩ or higher M49-2 (FE) or F126-23 (FE) - Body ground Always 10 kΩ or higher M49-1 (FV) or F126-3 (FV) - Body ground Always 10 kΩ or higher

      Result
      Proceed to OK NG

   
   

   NG

   REPAIR OR REPLACE HARNESS OR CONNECTOR

   OK

9. INSPECT FUEL SENDER GAUGE ASSEMBLY

   
   

   1. Remove the fuel sender gauge assembly.

      for 1AR-FE: Click here

      for 2GR-FKS: Click here

   2. Inspect the fuel sender gauge assembly.

      for 1AR-FE: Click here

      for 2GR-FKS: Click here

      OK
      Fuel sender gauge assembly is normal.

      Result
      Proceed to OK NG

   
   

   NG

   REPLACE FUEL SENDER GAUGE ASSEMBLY for 1AR-FE: Click here REPLACE FUEL SENDER GAUGE ASSEMBLY for 2GR-FKS: Click here

   OK

10. INSPECT FUEL SUCTION TUBE WITH PUMP AND GAUGE ASSEMBLY

    

    *a	Component without harness connected (Fuel Suction Tube with Pump and Gauge Assembly)
    *A	for 1AR-FE
    *B	for 2GR-FKS

    
    

    1. for 1AR-FE

       
       

       1. Measure the resistance according to the value(s) in the table below.

          Standard Resistance
          Tester Connection Condition Specified Condition M9-2 (FS) - A-2 Always Below 1 Ω M9-3 (FE) - A-1 Always Below 1 Ω

    2. for 2GR-FKS

       
       

       1. Measure the resistance according to the value(s) in the table below.

          Standard Resistance
          Tester Connection Condition Specified Condition M49-1 (FV) - A-3 Always Below 1 Ω M49-2 (FE) - A-2 Always Below 1 Ω M49-3 (S) - A-1 Always Below 1 Ω

    3. Measure the resistance according to the value(s) in the table below.

       Result
       Proceed to OK NG

    
    

    OK

    REPLACE COMBINATION METER ASSEMBLY Click here

    NG

    REPLACE FUEL SUCTION TUBE WITH PUMP AND GAUGE ASSEMBLY for 1AR-FE: Click here REPLACE FUEL SUCTION TUBE WITH PUMP AND GAUGE ASSEMBLY for 2GR-FKS: Click here

11. PERFORM ACTIVE TEST USING GTS (FUEL METER OPERATION)

    
    

    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Enter following menus: Body Electrical / Combination Meter / Active Test.

    5. Check the operation by referring to the table below.

       
       Body Electrical > Combination Meter > Active Test

       Tester Display	Measurement Item	Control Range	Diagnostic Note
       Fuel Meter Operation	Fuel receiver gauge	OFF, Sender E, Empty, Warning, 1/4, 1/2, 3/4, Full or Sender F	-

       
       Body Electrical > Combination Meter > Active Test

       Tester Display
       Fuel Meter Operation

       OK
       Fuel receiver gauge indication is normal.

       Result
       Proceed to OK NG

    
    

    NG

    REPLACE COMBINATION METER ASSEMBLY Click here

    OK

12. CHECK FOR DTC

    
    

    1. Check if SFI System DTCs are output.

       for 1AR-FE: Click here

       for 2GR-FKS: Click here

       
       Powertrain > Engine > Trouble Codes

       Result
       Result Proceed to SFI system DTCs are not output A SFI system DTCs are output B

    
    

    B

    GO TO SFI SYSTEM for 1AR-FE: Click here GO TO SFI SYSTEM for 2GR-FKS: Click here

    A

13. CHECK FOR DTC

    
    

    1. Check if Vehicle Stability Control System DTCs are output.

       Click here

       
       Chassis > ABS/VSC/TRC > Trouble Codes

       Result
       Result Proceed to Vehicle stability control system DTCs are not output A Vehicle stability control system DTCs are output B

    
    

    B

    GO TO VEHICLE STABILITY CONTROL SYSTEM Click here

    A

14. CHECK FOR DTC

    
    

    1. Check if Meter / Gauge System DTCs are output.

       Click here

       
       Body Electrical > Combination Meter > Trouble Codes

       Result
       Result Proceed to DTC B1500 is not output A DTC B1500 is output B

    
    

    B

    GO TO DTC B1500 Click here

    A

15. INSPECT FUEL RECEIVER GAUGE

    
    

    1. Disconnect the cable from the negative (-) battery terminal to reset the fuel receiver gauge.

       Tech Tips

       Check that the ignition switch is turned off before disconnecting the cable from the negative (-) battery terminal.

    2. Connect the cable to the negative (-) battery terminal and turn the ignition switch to ON.

    3. Check if the fuel receiver gauge reading corresponds with the amount of fuel remaining in the fuel tank assembly.

       Result
       Result Proceed to Fuel receiver gauge reading corresponds with the amount of fuel remaining in the fuel tank assembly A Fuel receiver gauge reading does not correspond with the amount of fuel remaining in the fuel tank assembly B

    
    

    A

    END

    B

    GO TO STEP 7 Click here

16. CHECK FOR DTC

    
    

    1. Check if SFI System DTCs are output.

       for 1AR-FE: Click here

       for 2GR-FKS: Click here

       
       Powertrain > Engine > Trouble Codes

       Result
       Result Proceed to SFI system DTCs are not output A SFI system DTCs are output B

    
    

    B

    GO TO SFI SYSTEM for 1AR-FE: Click here GO TO SFI SYSTEM for 2GR-FKS: Click here

    A

17. CHECK FOR DTC

    
    

    1. Check if Vehicle Stability Control System DTCs are output.

       Click here

       
       Chassis > ABS/VSC/TRC > Trouble Codes

       Result
       Result Proceed to Vehicle stability control system DTCs are not output A Vehicle stability control system DTCs are output B

    
    

    B

    GO TO VEHICLE STABILITY CONTROL SYSTEM Click here

    A

18. INSPECT FUEL TANK ASSEMBLY

    Tech Tips

    Inspect the fuel tank assembly for deformation, foreign matter or an improperly installed fuel receiver gauge, as this may be the cause of the fuel receiver gauge malfunction.

    
    

    1. Visually check the fuel tank assembly for any abnormalities.

    2. Check if there is an excessive amount of foreign matter in the fuel tank assembly.

    3. Check the installation condition of the fuel tank assembly and fuel sender gauge assembly.

       Result
       Result Proceed to Normal A Appearance of the fuel tank assembly is abnormal B There is an excessive amount of foreign matter in the fuel tank assembly C The fuel tank assembly or fuel sender gauge assembly is not installed correctly D

    
    

    A

    REPLACE COMBINATION METER ASSEMBLY Click here

    B

    REPLACE FUEL TANK ASSEMBLY for 1AR-FE: Click here REPLACE FUEL TANK ASSEMBLY for 2GR-FKS: Click here

    C

    CLEAN INSIDE OF FUEL TANK ASSEMBLY

    D

    INSTALL FUEL TANK ASSEMBLY OR FUEL SENDER GAUGE ASSEMBLY CORRECTLY