METER / GAUGE SYSTEM Fuel Receiver Gauge Malfunction

DESCRIPTION

• The combination meter sub-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 will vary between approximately 15 Ω with the float at the full position, and 410 Ω with the float at the empty position. The meter outputs auxiliary battery voltage through two resistors that are mounted inside the combination meter sub-assembly. The combination meter sub-assembly 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

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.

      Combination Meter

      Tester Display	Test Part	Control Range	Diagnostic Note
      Fuel Meter Operation	Fuel receiver gauge	Empty, 1/4, 1/2, 3/4, Full	-

      OK
      Fuel receiver gauge indication is normal.

   
   

   NG

   REPLACE METER CIRCUIT PLATE 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.

      Combination Meter

      Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
      Fuel Input	Fuel input/Min.: 0, Max.: 127.5	10th segment comes on: 39.8 to 45.0	Unit: Liter
      		9th segment comes on: 36.2 to 39.8
      		8th segment comes on: 32.6 to 36.2
      		7th segment comes on: 28.6 to 32.6
      		6th segment comes on: 24.4 to 28.6
      		5th segment comes on: 20.1 to 24.4
      		4th segment comes on: 16.0 to 20.1
      		3rd segment comes on: 12.5 to 16.0
      		2nd segment comes on: 8.6 to 12.5
      		1st segment comes on: 4.8 to 8.6

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

   
   

   B

   REPLACE METER CIRCUIT PLATE Click here

   A

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

   
   

   1. Disconnect the L27 combination meter sub-assembly connector.

   2. Disconnect the R11 fuel suction with pump and gauge tube assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition L27-12 (L) - R11-2 (FS) Always Below 1 Ω L27-13 (ES 2) - R11-3 (FE) Always Below 1 Ω L27-12 (L) - Body ground Always 10 kΩ or higher L27-13 (ES 2) - 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.

   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) 12 to 18 Ω 1 - 2 Float level is between F (upper) and E (lower) 12 to 415 Ω (Gradually changes) 1 - 2 Float level is E (lower) 405 to 415 Ω

   
   

   OK

   REPLACE METER CIRCUIT PLATE Click here

   NG

   REPLACE FUEL SENDER GAUGE ASSEMBLY Click here