Toyota Venza: Fuel Receiver Gauge Malfunction

Toyota Venza Service Manual / Meter / Gauge / Display / Meter / Gauge System / 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 7.5 Ω with the float at the full position, and 185 Ω*1 or 225 Ω*2 with the float at the empty position. The meter outputs battery voltage through two 820 Ω 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.

*1: for 2WD
*2: for AWD

HINT:

The fuel level warning light will come on when the fuel level is below 10.0 liters (10.6 Imp.qts, 8.8 US qts).

WIRING DIAGRAM

PROCEDURE

1.	CHECK CAN COMMUNICATION SYSTEM

(a) Check if a CAN communication DTC is output (See page ).

Result	Proceed to
CAN communication DTC is not output.	A
CAN communication DTC is output.	B

GO TO CAN COMMUNICATION SYSTEM

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

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

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

(e) 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, 1/2, Full	Confirm that the vehicle is stopped with the engine idling

OK:

Fuel receiver gauge indication is normal.

REPLACE COMBINATION METER ASSEMBLY

3.	READ VALUE USING TECHSTREAM (FUEL INPUT)

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

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

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

Combination Meter

Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
Fuel Input	Fuel input signal/Min.: 0, Max.: 127.5	Current fuel level displayed	Unit: Liter

OK:

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

REPLACE COMBINATION METER ASSEMBLY

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

(a) Disconnect the E2 and L12 connectors.

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
E2-9 (FR) - L12-2	Always	Below 1 Ω
E2-9 (FR) - Body ground	Always	10 kΩ or higher
E2-23 (FE) - M12-2	Always	Below 1 Ω
E2-23 (FE) - Body ground	Always	10 kΩ or higher
L12-3 - M12-1	Always	Below 1 Ω
M12-1 - Body ground	Always	10 kΩ or higher

Text in Illustration

Front view of wire harness connector

(to Combination Meter Assembly)

Front view of wire harness connector

(to Fuel Sender Gauge Assembly (Main))

Front view of wire harness connector

(to Fuel Sender Gauge Assembly (Sub))

REPAIR OR REPLACE HARNESS OR CONNECTOR

5.	INSPECT FUEL SENDER GAUGE ASSEMBLY

(a) Remove the fuel sender gauge assembly (See page (Main),
(Sub)).

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

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

Standard Resistance (Main):

Tester Connection	Condition	Specified Condition
1 - 2	Float level is F (upper)	6.5 to 8.5 Ω
1 - 2	Float level is between F (upper) and E (lower)	6.5 to 187.2 Ω (Gradually changes)
1 - 2	Float level is E (lower)	183.2 to 187.2 Ω

Standard Resistance (Sub):

Tester Connection	Condition	Specified Condition
1 - 2	Float level is F (upper)	6.5 to 8.5 Ω
1 - 2	Float level is between F (upper) and E (lower)	6.5 to 227.3 Ω (Gradually changes)
1 - 2	Float level is E (lower)	222.3 to 227.3 Ω

Text in Illustration

Front view of wire harness connector

(to Fuel Sender Gauge Assembly (Main))

Front view of wire harness connector

(to Fuel Sender Gauge Assembly (Sub))

Result	Proceed to
OK	A
NG (for 2GR-FE)	B
NG (for 1AR-FE)	C

REPLACE FUEL SENDER GAUGE ASSEMBLY (for 2GR-FE)

REPLACE FUEL SENDER GAUGE ASSEMBLY (for 1AR-FE)

6.	CHECK FUEL SENDER GAUGE ASSEMBLY

(a) Visually check for deformation on the fuel sender gauge assembly connector.

OK:

There is no deformation.

Result	Proceed to
OK	A
NG (for 2GR-FE)	B
NG (for 1AR-FE)	C

REPLACE COMBINATION METER ASSEMBLY

REPLACE FUEL SENDER GAUGE ASSEMBLY (for 2GR-FE)

REPLACE FUEL SENDER GAUGE ASSEMBLY (for 1AR-FE)

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