Toyota Tundra Service Manual: Fuel Sender Open Detected (B1500)

DESCRIPTION

This DTC is output when the combination meter detects the fuel sender gauge malfunction via the CAN.

DTC Code

DTC Detection Condition

Trouble Area

B1500

When combination meter detects fuel sender gauge malfunction

  • Harness or connector
  • Combination meter
  • Fuel sender gauge
  • Fuel suction with pump and gauge tube

WIRING DIAGRAM

PROCEDURE

1.

READ VALUE USING TECHSTREAM (FUEL SENDER GAUGE)

(a) Operate the Techstream according to the display and select the "Data List" (See page ).

Combination Meter:

Tester Display

Measurement Item/Range

Normal Condition

Diagnostic Note

Fuel Level

Fuel sender gauge (main) input signal/Min.: 0, Max.: 127.5

Fuel sender input value

Unit: L

OK:

Fuel value displayed on Techstream is almost same as needle indication

OK

REPLACE COMBINATION METER ASSEMBLY

NG

2.

CHECK HARNESS AND CONNECTOR (COMBINATION METER - FUEL SUCTION WITH PUMP AND GAUGE TUBE AND BODY GROUND)

(a) Disconnect the J28 meter connector.

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

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

(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

Always

10 kΩ or higher

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

Always

10 kΩ or higher

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

3.

INSPECT FUEL SENDER GAUGE ASSEMBLY

(a) Remove the fuel sender gauge.

  • for 1UR-FE (See page )
  • for 3UR-FE (See page )
  • for 3UR-FBE (See page )

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

1 - 2

Float level is F (upper)

12 to 18 Ω

Float level is E (lower)

405 to 415 Ω

Result

Result

Proceed to

OK

A

NG (for 1UR-FE)

B

NG (for 3UR-FE)

C

NG (for 3UR-FBE)

D

B

REPLACE FUEL SENDER GAUGE ASSEMBLY

C

REPLACE FUEL SENDER GAUGE ASSEMBLY

D

REPLACE FUEL SENDER GAUGE ASSEMBLY

A

4.

INSPECT FUEL SUCTION WITH PUMP AND GAUGE TUBE ASSEMBLY

(a) Remove the fuel suction with pump and gauge tube.

  • for 1UR-FE (See page )
  • for 3UR-FE (See page )
  • for 3UR-FBE (See page )

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

A2 - B2

Always

Below 1 Ω

A3 - B1

Result

Result

Proceed to

OK

A

NG (for 1UR-FE)

B

NG (for 3UR-FE)

C

NG (for 3UR-FBE)

D

A

REPLACE COMBINATION METER ASSEMBLY

B

REPLACE FUEL SUCTION WITH PUMP AND GAUGE TUBE ASSEMBLY

C

REPLACE FUEL SUCTION WITH PUMP AND GAUGE TUBE ASSEMBLY

D

REPLACE FUEL SUCTION WITH PUMP AND GAUGE TUBE ASSEMBLY

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