METER / GAUGE SYSTEM Fuel Receiver Gauge Malfunction

DESCRIPTION

• The combination meter assembly uses the fuel sender gauge assembly to determine the level of the fuel in the fuel tank. The resistance of the fuel sender gauge assembly will vary between approximately 15 Ω with the float at the full position, and 410 Ω with the float at the empty position. The combination meter assembly outputs battery voltage through two resistors that are mounted inside the combination meter assembly. The combination meter assembly measures the voltage between the variable resistor in the fuel sender gauge assembly and the two resistors mounted in the combination meter assembly. Voltage measured at this point will vary as the float of the fuel sender gauge assembly is moved. The highest voltage observed should be approximately half of the battery voltage.

WIRING DIAGRAM

PROCEDURE

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

   
   

   1. Connect the GTS to the DLC3.

   2. Turn the power switch on (IG).

   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, Empty, 1/2, Full	-

      
      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

2. READ VALUE USING GTS (FUEL INPUT)

   
   

   1. Connect the GTS to the DLC3.

   2. Turn the power switch on (IG).

   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: 39.6 L Fuel receiver gauge indicates 3/4: 31.5 L Fuel receiver gauge indicates 1/2: 22.5 L Fuel receiver gauge indicates 1/4: 13.1 L Fuel receiver gauge indicates E: 4.5 L	-

      
      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

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

   
   

   1. Disconnect the E46 combination meter assembly connector.

   2. Disconnect the L20 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 E46-16 (L) - L20-2 (FS) Always Below 1 Ω E46-16 (L) - Body ground Always 10 kΩ or higher E46-15 (E) - L20-3 (FE) Always Below 1 Ω E46-15 (E) - Body ground Always 10 kΩ or higher

      Result
      Proceed to OK NG

   
   

   NG

   REPAIR OR REPLACE HARNESS OR CONNECTOR

   OK

4. INSPECT FUEL SENDER GAUGE ASSEMBLY

   
   

   1. Remove the fuel sender gauge assembly.

      Click here

   2. Inspect the fuel sender gauge assembly.

      Click here

      Result
      Proceed to OK NG

   
   

   NG

   REPLACE FUEL SENDER GAUGE ASSEMBLY Click here

   OK

5. CHECK CONNECTOR

   
   

   1. Visually check for deformation on the fuel suction tube with pump and gauge assembly connector.

      OK
      There is no deformation.

      Result
      Proceed to OK NG

   
   

   OK

   REPLACE COMBINATION METER ASSEMBLY Click here

   NG

   REPLACE FUEL SUCTION TUBE WITH PUMP AND GAUGE ASSEMBLY Click here