Toyota 4Runner Quiz
Vehicle Interior

Fuel Sender Open Detected (B1500)

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DESCRIPTION

This DTC is stored when the combination meter detects a fuel sender gauge malfunction.

DTC Code

DTC Detection Condition

Trouble Area

B1500

IG voltage is 9.5 V or higher and the following condition is met:

1. Fuel sender gauge operation malfunction.
  • Harness or connector
  • Combination meter assembly
  • Fuel suction with pump and gauge tube assembly
  • Fuel sender gauge assembly
WIRING DIAGRAM
PROCEDURE

  1. READ VALUE USING TECHSTREAM (FUEL SENDER GAUGE)

(a) Use the Data List to check if the fuel receiver gauge is operating properly (See page ).


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 amount value displayed on the Techstream is almost the same as needle indication.

Result

Result

Proceed to

NG

A

OK

B

B

REPLACE COMBINATION METER ASSEMBLY
A

  1. CHECK HARNESS AND CONNECTOR (COMBINATION METER - FUEL SUCTION WITH PUMP AND BODY GROUND)

(a) Disconnect the F14 meter connector.

(b) Disconnect the Q5 gauge connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

F14-40 (L) - Q5-2 (FS)

Always

Below 1 Ω

F14-19 (E3) - Q5-3 (FE)

F14-20 (E1) - Body ground

F14-40 (L) or Q5-2 (FS) - Body ground

Always

10 kΩ or higher

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

  1. INSPECT FUEL SUCTION WITH PUMP AND GAUGE TUBE ASSEMBLY

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

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

A-2 (FS) - B-2

Always

Below 1 Ω

A-3 (FE) - B-3
Text in Illustration

*a

Upper Side

*b

Lower Side (to Fuel Sender Gauge Assembly)

*c

Connector A

*d

Connector B

NG

REPLACE FUEL SUCTION WITH PUMP AND GAUGE TUBE ASSEMBLY
OK

  1. INSPECT FUEL SENDER GAUGE ASSEMBLY

(a) Remove the fuel sender gauge (See page ).

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

2 - 3

Float level F (upper)

12 to 18 Ω

Float level E (lower)

405 to 415 Ω
Text in Illustration

*a

Front view of wire harness connector (to Fuel Sender Gauge Assembly)

*b

Float level F (upper)

*c

Float level E (lower)

OK

REPLACE COMBINATION METER ASSEMBLY

NG

REPLACE FUEL SENDER GAUGE ASSEMBLY

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