Fuel Receiver Gauge Malfunction

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

DESCRIPTION

* The meter CPU receives fuel level signals from this circuit. The fuel sender controls the resistance value in accordance with changes in sender gauge position. The meter CPU detects the fuel level from the transformed voltage. The meter CPU outputs a constant voltage of 12 V to the fuel sender. In the fuel sender, the voltage is changed due to the resistance. The changed voltage is output from the fuel sender to the meter CPU, thus the fuel level is determined by fuel injection signals transmitted using the BEAN lines.

HINT
The fuel level warning light will come on when the fuel level is below 11.0 liters (9.7 US qts, 11.6 lmp qts).

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK CAN COMMUNICATION SYSTEM

(a) Check if CAN communication DTC is output Diagnosis System.

Result





B -- REPAIR CIRCUITS INDICATED BY OUTPUT DTCS
A -- Continue to next step.

2. CHECK MULTIPLEX COMMUNICATION SYSTEM

(a) Check if MULTIPLEX communication DTC is output Reading and Clearing Diagnostic Trouble Codes.

Result





B -- REPAIR CIRCUITS INDICATED BY OUTPUT DTCS
A -- Continue to next step.

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

(a) Connect Techstream to the DLC3.

(b) Turn the engine switch on (IG).

(c) Turn the tester ON.

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

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

Combination Meter:





OK:

Needle indication is normal.

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

4. READ VALUE USING TECHSTREAM (FUEL INPUT)

(a) Connect Techstream to the DLC3.

(b) Turn the engine switch on (IG).

(c) Turn the tester ON.

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

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

Combination Meter:





OK:

Fuel value signal displayed on the tester is almost the same as needle indication.

NG -- INSPECT FUEL SENDER GAUGE ASSEMBLY

OK -- REPLACE COMBINATION METER ASSEMBLY

5. INSPECT FUEL SENDER GAUGE ASSEMBLY

(a) Disconnect the connectors from the fuel sender gauges.





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

Standard resistance: Fuel sender gauge (Main):





Standard resistance: Fuel sender gauge (Sub):





NG -- REPLACE FUEL SENDER GAUGE ASSEMBLY
OK -- Continue to next step.

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

(a) Disconnect the fuel tank wires from the fuel sender gauge assembly.





(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.

7. INSPECT FUEL SENDER GAUGE ASSEMBLY

(a) Disconnect the fuel sender gauge connector.





(b) Inspect the fuel sender gauge assembly (main).

(1) Remove the fuel sender gauge assembly (main).

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

(3) Measure the resistance between the terminals 2 (S) and 3 (FE) of connector according to the value(s) in the table below.

Standard resistance:

Main






(c) Inspect the fuel sender gauge assembly (sub).

(1) Remove the fuel sender gauge assembly (sub).

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

(3) Measure the resistance between the terminals 1 (FS) and 2 (E) according to the value(s) in the table below.

Standard resistance:

Sub






NG -- REPLACE FUEL SENDER GAUGE ASSEMBLY
OK -- Continue to next step.

8. REPLACE COMBINATION METER ASSEMBLY

(a) Replace the combination meter assembly to a new one or a known normal one.

OK:

The operation of the combination meter assembly returns to normal.

NG -- REPLACE ECM

OK -- END