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 820 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 battery voltage.

HINT
The fuel level warning light will come on when the fuel level is below 7.5 liters (2.0 gallons).

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

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

Combination Meter

Combination Meter:

OK:

Gauge indication is normal.

NG -- REPLACE COMBINATION METER
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 following menus: Body Electrical / Combination Meter / Data List.

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

Combination Meter

Combination Meter:

OK:

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

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

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

(a) Disconnect the E46 and L17 connectors.





(b) 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 SENDER GAUGE ASSEMBLY

(a) Remove the fuel sender gauge assembly.





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

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

Standard Resistance:





Result:





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

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

A -- REPLACE COMBINATION METER