Fuel Receiver Gauge Malfunction

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 Ohms with the float at the full position, and 410 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 ECU. 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 comes on when the fuel level is below 11 L.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. PERFORM ACTIVE TEST USING INTELLIGENT TESTER
(a) Connect the intelligent tester to the DLC3.
(b) Turn the ignition switch to the ON position.
(c) Turn the tester ON.
(d) Enter following menus: DIAGNOSIS / OBD/MOBD / METER / ACTIVE TEST.
(e) Check the operation by referring to the table below.

METER:





OK:
Needle indication is normal.
NG -- REPLACE COMBINATION METER ASSEMBLY
OK -- Continue to next step.
2. READ VALUE USING INTELLIGENT TESTER
(a) Connect the intelligent tester to the DLC3.
(b) Turn the ignition switch to the ON position.
(c) Turn the tester ON.
(d) Enter following menus: DIAGNOSIS / OBD/MOBD / METER / DATA LIST.
(e) Check the values by referring to the table below.

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
3. 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 between terminal 2 and 3 according to the value(s) in the table below.
OK:






NG -- REPLACE FUEL SENDER GAUGE ASSEMBLY
OK -- Continue to next step.
4. CHECK HARNESS AND CONNECTOR (COMBINATION METER - FUEL SENDER GAUGE)





(a) Disconnect the C9 and F16 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.
5. REPLACE COMBINATION METER ASSEMBLY
(a) Replace the combination meter assembly with a new or normal one.
OK:
The operation of the combination meter assembly returns to normal.
NG -- REPLACE ECM
OK -- END