Fuel Receiver Gauge Malfunction

METER / GAUGE / DISPLAY: METER / GAUGE SYSTEM: Fuel Receiver Gauge Malfunction
- Fuel Receiver Gauge Malfunction

DESCRIPTION

* The meter CPU 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 15.0 Ohms with the float at the full position, and 410.0 Ohms with the float at the empty position. The meter outputs battery voltage through two 220 Ohms resistors that are mounted in parallel inside the meter CPU. The meter CPU measures the voltage between the variable resistor in the fuel sender gauge and the two resistors mounted in parallel 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 battery voltage.

HINT
The fuel level warning light will come on when the fuel level is below 7.5 liters (7.9 US qts, 6.6 Imp qts).

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

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

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Combination Meter / Active Test.

(e) Check the operation by referring to the table below.

Combination Meter





OK:

Gauge indication is normal.

NG -- REPLACE COMBINATION METER Removal
OK -- Continue to next step.

2. READ VALUE USING TECHSTREAM (FUEL INPUT)

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Combination Meter / Data List.

(e) Check the values by referring to the table below.

(1) for 2WD

Combination Meter





OK:

Fuel input signal displayed on the Techstream is almost the same as fuel gauge indication.

(2) for 4WD

Combination Meter





OK:

Fuel input signal displayed on the Techstream is almost the same as fuel gauge indication.

NG -- REPLACE COMBINATION METER Removal
OK -- Continue to next step.

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

(a) Check the harness and connector (for 2WD).





(1) Disconnect the L13 connector.

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

Standard Resistance:





(b) Check the harness and connector (for 4WD).





(1) Disconnect the L12 and L13 connectors.

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

Standard Resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

4. INSPECT FUEL SUCTION PUMP AND GAUGE

(a) Remove the fuel suction pump and gauge.





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

Standard Resistance:





NG -- REPLACE FUEL SUCTION PUMP AND GAUGE
OK -- Continue to next step.

5. INSPECT FUEL SENDER GAUGE ASSEMBLY

(a) Inspect the fuel sender gauge assembly (for 2WD).





(1) Remove the fuel sender gauge assembly.

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

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

Standard Resistance:





(b) Inspect the fuel sender gauge assembly (for 4WD).





(1) Remove the fuel sender gauge assembly.

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

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

Standard Resistance (Main):





Standard Resistance (Sub):





Result:





C -- REPLACE FUEL SENDER GAUGE ASSEMBLY (for 2ZR-FE) Removal

B -- REPLACE FUEL SENDER GAUGE ASSEMBLY (for 2AZ-FE) Removal

A -- REPLACE COMBINATION METER Removal