Toyota 4Runner: Fuel Receiver Gauge Malfunction

Toyota 4Runner Service Manual / Vehicle Interior / Meter / Gauge / Display / Meter / Gauge System / Fuel Receiver Gauge Malfunction

DESCRIPTION

The fuel sender gauge 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.

NOTICE:

When the combination meter is removed or replaced, its connector is disconnected or fuel is added, the fuel receiver gauge display will return to normal within a maximum of 16 minutes after the ignition switch is turned to ON or when vehicle speed is input.

WIRING DIAGRAM

PROCEDURE

1.	CHECK CAN COMMUNICATION SYSTEM

(a) Check if a CAN communication DTC is output (See page ).

Result

Result	Proceed to
CAN communication DTC is not output	A
CAN communication DTC is output	B

GO TO CAN COMMUNICATION SYSTEM

2.	PERFORM ACTIVE TEST USING TECHSTREAM (FUEL METER OPERATION)

(a) Use the Active Test to check the operation of the fuel receiver gauge (See page ).

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.

REPLACE COMBINATION METER ASSEMBLY

3.	READ VALUE USING TECHSTREAM (FUEL INPUT)

(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: Liters

OK:

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

REPLACE COMBINATION METER ASSEMBLY

4.	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)	Always	Below 1 Ω
F14-40 (L) - Body ground	Always	10 kΩ or higher
F14-19 (E3) - Body ground	Always	10 kΩ or higher

REPAIR OR REPLACE HARNESS OR CONNECTOR

5.	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	Front view of wire harness connector (to Fuel Sender Gauge Assembly)
*b	Lower Side (to Fuel Sender Gauge Assembly)
*c	Connector A
*d	Connector B

REPLACE FUEL SUCTION WITH PUMP AND GAUGE TUBE ASSEMBLY

6.	INSPECT FUEL SENDER GAUGE ASSEMBLY

(a) Remove the fuel sender gauge assembly (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

Front view of wire harness connector

(to Fuel Sender Gauge Assembly)

Float level F (upper)

Float level E (lower)

REPLACE COMBINATION METER ASSEMBLY

REPLACE FUEL SENDER GAUGE ASSEMBLY

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