Toyota Venza manuals

Toyota Venza: 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


B

GO TO CAN COMMUNICATION SYSTEM


A

2.

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

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.


NG

REPLACE COMBINATION METER ASSEMBLY


OK

3.

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

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.


NG

REPLACE COMBINATION METER ASSEMBLY


OK

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

*1

Front view of wire harness connector

(to Combination Meter Assembly)

*2

Front view of wire harness connector

(to Fuel Sender Gauge Assembly (Main))

*3

Front view of wire harness connector

(to Fuel Sender Gauge Assembly (Sub))


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR


OK

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.

(c) Check if the fuel sender gauge arm is deformed.

(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

*1

Front view of wire harness connector

(to Fuel Sender Gauge Assembly (Main))

*2

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


B

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


C

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


A

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


A

REPLACE COMBINATION METER ASSEMBLY


B

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


C

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

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