Toyota 4Runner: Fuel Sender Open Detected (B1500)

Toyota 4Runner Service Manual / Vehicle Interior / Meter / Gauge / Display / Meter / Gauge System / Fuel Sender Open Detected (B1500)

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

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

REPLACE COMBINATION METER ASSEMBLY

2.	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.

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

REPAIR OR REPLACE HARNESS OR CONNECTOR

3.	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	Always	Below 1 Ω

Text in Illustration

*a	Upper Side
*b	Lower Side (to Fuel Sender Gauge Assembly)
*c	Connector A
*d	Connector B

REPLACE FUEL SUCTION WITH PUMP AND GAUGE TUBE ASSEMBLY

4.	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
2 - 3	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)

REPLACE COMBINATION METER ASSEMBLY

REPLACE FUEL SENDER GAUGE ASSEMBLY

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0.0087