METER / GAUGE SYSTEM Fuel Receiver Gauge Malfunction

DESCRIPTION

• The meter ECU uses the fuel sender gauge assembly to determine the level of the fuel in the fuel tank. The resistance of the fuel sender gauge will vary between approximately 13 Ω with the float at the full position, and 414 Ω with the float at the empty position. The meter outputs auxiliary battery voltage through two resistors that are mounted inside the meter ECU. The meter ECU measures the voltage between the variable resistor in the fuel sender gauge and the two resistors mounted in the meter. Voltage measured at this point will vary as the float of the fuel sender gauge is moved. The highest voltage observed should be approximately half of the auxiliary battery voltage.

WIRING DIAGRAM

INSPECTION PROCEDURE

PROCEDURE

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

   
   

   1. Connect the Techstream to the DLC3.

   2. Turn the power switch on (IG).

   3. Turn the Techstream on.

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

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

      Combination Meter

      Tester Display	Test Part	Control Range	Diagnostic Note
      Fuel Meter Operation	Fuel receiver gauge	Empty, 1/2, Full	-

      OK
      Fuel receiver gauge indication is normal.

   
   

   NG

   REPLACE COMBINATION METER ASSEMBLY Click here

   OK

2. READ VALUE USING TECHSTREAM (FUEL INPUT)

   
   

   1. Connect the Techstream to the DLC3.

   2. Turn the power switch on (IG).

   3. Turn the Techstream on.

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

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

      Combination Meter

      Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
      Fuel Input	Fuel input/Min.: 0, Max.: 127.5	Fuel receiver gauge indicates F: 57.0	Unit: Liter
      		Fuel receiver gauge indicates 3/4: 48.3
      		Fuel receiver gauge indicates 1/2: 32.2
      		Fuel receiver gauge indicates 1/4: 16.1
      		Fuel receiver gauge indicates E: 6.4

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

   
   

   B

   CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - FUEL SENDER GAUGE ASSEMBLY) Click here

   A

   REPLACE COMBINATION METER ASSEMBLY Click here

3. CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - FUEL SENDER GAUGE ASSEMBLY)

   
   

   1. Disconnect the I18 combination meter assembly and N11 fuel sender gauge assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition I18-18 (FR) - N11-2 (FS) Always Below 1 Ω I18-18 (FR) - Body ground Always 10 kΩ or higher I18-17 (FE) - N11-3 (FE) Always Below 1 Ω I18-17 (FE) - Body ground Always 10 kΩ or higher

   
   

   NG

   REPAIR OR REPLACE HARNESS OR CONNECTOR

   OK

4. INSPECT FUEL SENDER GAUGE ASSEMBLY

   
   
   1. 

      Text in Illustration

      *a	Front view of wire harness connector (to Fuel Sender Gauge Assembly)

      Remove the fuel sender gauge assembly Click here for 2AR-FXE).

   2. Check that the float moves smoothly between F and E.

   3. Check if the fuel sender gauge arm is deformed.

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

      Standard Resistance
      Tester Connection Condition Specified Condition 1 - 2 Float level is F (upper) 13.5 to 16.5 Ω 1 - 2 Float level is between F (upper) and E (lower) 13.5 to 414.5 Ω (Gradually changes) 1 - 2 Float level is E (lower) 405.5 to 414.5 Ω

   
   

   NG

   REPLACE FUEL SENDER GAUGE ASSEMBLY (for 2AR-FXE) Click here

   OK

5. CHECK FUEL SUCTION TUBE ASSEMBLY WITH PUMP AND GAUGE

   
   

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

      OK
      There is no deformation.

   
   

   NG

   REPLACE FUEL SUCTION TUBE ASSEMBLY WITH PUMP AND GAUGE (for 2AR-FXE) Click here

   OK

   REPLACE COMBINATION METER ASSEMBLY Click here