Toyota Tundra Service Manual: Fuel Receiver Gauge Malfunction

DESCRIPTION

  • The fuel sender gauge assembly has a variable resistance mechanism. The resistance decreases when the fuel amount increases, and the resistance increases when the fuel amount decreases. The fuel receiver gauge changes based on the resistance of the fuel sender gauge assembly.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

CAUTION:

Be careful of flames.

NOTICE:

When replacing the combination meter assembly, always replace it with a new one. If a combination meter assembly which was installed to another vehicle is used, the information stored in it will not match the information from the vehicle and a DTC may be stored.

PROCEDURE

1.

PERFORM ACTIVE TEST USING TECHSTREAM (FUEL METER OPERATION)

(a) Using the Techstream, perform the Active Test.

Click here

Combination Meter:

Tester Display

Test Part

Control Range

Diagnostic Note

Fuel Meter Operation

Fuel receiver gauge

OFF, Sender E, Empty, Warning, 1/4, 1/2, 3/4, Full or Sender F

Perform the test with the vehicle stopped and engine idling

OK:

Fuel receiver gauge indication is normal.

NG

REPLACE COMBINATION METER ASSEMBLY

OK

2.

READ VALUE USING TECHSTREAM (FUEL INPUT)

(a) Using the Techstream, read the Data List.

Click here

Combination Meter:

Tester Display

Measurement Item/Range

Normal Condition

Diagnostic Note

Fuel Level

Fuel sender gauge input/Min.: 0, Max.: 127.5

Fuel sender input value

Unit: L

Result

Proceed to

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

A

Fuel level data displayed on the Techstream differs from the fuel receiver gauge indication.

B

B

REPLACE COMBINATION METER ASSEMBLY

A

3.

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

  • *1: except 3UR-FBE
  • *2: for 3UR-FBE

(a) Disconnect the J28 combination meter assembly connector.

(b) Disconnect the R6*1 or R19*2 fuel sender gauge assembly connector.

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

Standard Resistance:

except 3UR-FBE

Tester Connection

Condition

Specified Condition

J28-26 (L) - R6-2

Always

Below 1 Ω

J28-25 (E3) - R6-3

J28-24 (ES) - Body ground

J28-26 (L) or R6-2 - Body ground or other terminal

Always

10 kΩ or higher

J28-25 (E3) or R6-3 - Body ground or other terminal

for 3UR-FBE

Tester Connection

Condition

Specified Condition

J28-26 (L) - R19-2

Always

Below 1 Ω

J28-25 (E3) - R19-3

J28-24 (ES) - Body ground

J28-26 (L) or R19-2 - Body ground or other terminal

Always

10 kΩ or higher

J28-25 (E3) or R19-3 - Body ground or other terminal

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

4.

INSPECT FUEL SENDER GAUGE ASSEMBLY

(a) Remove the fuel sender gauge assembly.

Click here

(b) Inspect the fuel sender gauge assembly.

Click here

OK

REPLACE COMBINATION METER ASSEMBLY

NG

REPLACE FUEL SENDER GAUGE ASSEMBLY

    Entire Combination Meter does not Operate

    How To Proceed With Troubleshooting

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