Meter / Gauge System Malfunction In Fuel Receiver Gauge

Body Electrical. Lexus Gs430, Gs300. Uzs190 Grs190
Meter. Lexus Gs430, Gs300. Uzs190 Grs190

WIRING DIAGRAM

INSPECTION PROCEDURE

PERFORM ACTIVE TEST BY INTELLIGENT TESTER

READ VALUE OF INTELLIGENT TESTER

INSPECT FUEL SENDER GAUGE ASSEMBLY (MAIN)

INSPECT FUEL SENDER GAUGE ASSEMBLY (SUB)

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

CHECK HARNESS AND CONNECTOR (FUEL SENDER GAUGE (SUB) - FUEL SENDER GAUGE (MAIN))

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

METER / GAUGE SYSTEM - Malfunction in Fuel Receiver Gauge


WIRING DIAGRAM


Lexus Gs430, Gs300. Uzs190 Grs190.Meter.Meter / Gauge System.Meter / Gauge System Malfunction In Fuel Receiver Gauge


INSPECTION PROCEDURE

1.PERFORM ACTIVE TEST BY INTELLIGENT TESTER

  1. Operate the intelligent tester according to the display and select the "Active Test".

    Combination meter:

    Item
    		Test Details
    		Diagnostic Note
    Fuel Meter Operation
    		EMPTY, 1/2, FULL
    		-
    OK:
    Needle indication is normal.


NG
REPLACE COMBINATION METER
OK


2.READ VALUE OF INTELLIGENT TESTER

  1. Operate the intelligent tester according to the display and select the "Data List".

    Combination meter:

    Item
    		Measurement Item/Range (Display)
    		Normal Condition
    		Diagnostic Note
    Fuel Input
    		Fuel input signal/ Min.: 0, Max.: 255
    		Fuel gauge indicates (F): 47
    Fuel gauge indicates (3/4): 92
    Fuel gauge indicates (1/2): 148
    Fuel gauge indicates (1/4): 187
    Fuel gauge indicates (E): 205
    		-
    OK:
    Fuel value signal displayed on the tester is almost the same as needle indication.


NG
REPLACE COMBINATION METER
OK


3.INSPECT FUEL SENDER GAUGE ASSEMBLY (MAIN)


    Lexus Gs430, Gs300. Uzs190 Grs190.Meter.Meter / Gauge System.Meter / Gauge System Malfunction In Fuel Receiver Gauge

  1. Measure the voltage of the wire harness side connector.

    Standard voltage:
    Tester Connection
    		Condition
    		Specified Condition
    V9-2 - V9-3
    		Engine switch on (ACC) or on (IG)
    		10 to 14 V

  1. Remove the fuel sender gauge assembly.

  1. Connect the fuel sender gauge connector.



    Lexus Gs430, Gs300. Uzs190 Grs190.Meter.Meter / Gauge System.Meter / Gauge System Malfunction In Fuel Receiver Gauge

  1. Check that the float position is between E and F.

  1. Measure the resistance between the terminals 2 and 1 of connector of the connector.

    Standard resistance:
    Float level
    		Float Position
    		Specified Condition
    F
    		51.4 to 57.4 mm (2.02 to 2.26 in.)
    		6.5 to 8.5 Ω
    E
    		121.7 to 127.7 mm (4.79 to 5.03 in.)
    		237.6 to 242.6 Ω


NG
REPLACE FUEL SENDER GAUGE ASSEMBLY
OK


4.INSPECT FUEL SENDER GAUGE ASSEMBLY (SUB)


    Lexus Gs430, Gs300. Uzs190 Grs190.Meter.Meter / Gauge System.Meter / Gauge System Malfunction In Fuel Receiver Gauge

  1. Measure the voltage of the wire harness side connector.

    Standard voltage:
    Tester Connection
    		Condition
    		Specified Condition
    W11-2 - W11-3
    		Engine switch on (ACC) or on (IG)
    		10 to 14 V

  1. Remove the fuel sender gauge assembly.

  1. Connect the fuel sender gauge connector.



    Lexus Gs430, Gs300. Uzs190 Grs190.Meter.Meter / Gauge System.Meter / Gauge System Malfunction In Fuel Receiver Gauge

  1. Check that the float position is between E and F.

  1. Measure the resistance between terminals 2 and 1 of connector of the connector.

    Standard resistance:
    Float level
    		Float Position
    		Specified Condition
    F
    		69.9 to 75.9 mm (2.75 to 2.99 in.)
    		6.5 to 8.5 Ω
    E
    		103.1 to 109.1 mm (4.06 to 4.30 in.)
    		167.9 to 171.9 Ω


NG
REPLACE FUEL SENDER GAUGE ASSEMBLY
OK


5.CHECK HARNESS AND CONNECTOR (COMBINATION METER - FUEL SENDER GAUGE (MAIN))


    Lexus Gs430, Gs300. Uzs190 Grs190.Meter.Meter / Gauge System.Meter / Gauge System Malfunction In Fuel Receiver Gauge

  1. Disconnect the V9 fuel sender gauge connector.

  1. Disconnect the L31 meter connector.

  1. Measure the resistance of the wire harness side connector.

    Standard resistance:
    Tester Connection
    		Condition
    		Specified Condition
    L31-19 - V9-2
    		Always
    		Below 1 Ω
    V9-2 - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS AND CONNECTOR
OK


6.CHECK HARNESS AND CONNECTOR (FUEL SENDER GAUGE (SUB) - FUEL SENDER GAUGE (MAIN))


    Lexus Gs430, Gs300. Uzs190 Grs190.Meter.Meter / Gauge System.Meter / Gauge System Malfunction In Fuel Receiver Gauge

  1. Disconnect the V9 fuel sender gauge connector.

  1. Disconnect the W11 fuel sender gauge connector.

  1. Measure the resistance of the wire harness side connectors.

    Standard resistance:
    Tester Connection
    		Condition
    		Specified Condition
    V9-3 - W11-3
    		Always
    		Below 1 Ω
    W11-3 - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS AND CONNECTOR
OK


7.CHECK HARNESS AND CONNECTOR (COMBINATION METER - FUEL SENDER GAUGE (SUB))


    Lexus Gs430, Gs300. Uzs190 Grs190.Meter.Meter / Gauge System.Meter / Gauge System Malfunction In Fuel Receiver Gauge

  1. Disconnect the W11 fuel sender gauge connector.

  1. Disconnect the L31 meter connector.

  1. Measure the resistance of the wire harness side connectors.

    Standard resistance:
    Tester Connection
    		Condition
    		Specified Condition
    W11-2 - L31-34
    		Always
    		Below 1 Ω
    L31-34 - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS AND CONNECTOR
OK

REPLACE COMBINATION METER