Meter / Gauge System Fuel Receiver Gauge Malfunction

Body Electrical. Lexus Is250, Is220D. Gse20 Ale20
Meter. Lexus Is250, Is220D. Gse20 Ale20

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK CAN COMMUNICATION SYSTEM

CHECK MULTIPLEX COMMUNICATION SYSTEM

PERFORM ACTIVE TEST BY INTELLIGENT TESTER

READ VALUE OF INTELLIGENT TESTER

INSPECT FUEL SENDER GAUGE ASSEMBLY

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

INSPECT FUEL SENDER GAUGE ASSEMBLY

INSPECT FUEL SENDER GAUGE ASSEMBLY

REPLACE COMBINATION METER ASSEMBLY

METER / GAUGE SYSTEM - Fuel Receiver Gauge Malfunction


DESCRIPTION

  1. The meter CPU receives fuel level signals from this circuit. The fuel sender controls the resistance value in accordance with changes in sender gauge position. The meter CPU detects the fuel level from the transformed voltage. The meter CPU outputs a constant voltage of 12 V to the fuel sender. In the fuel sender, the voltage is changed due to the resistance. The changed voltage is output from the fuel sender to the meter CPU, thus the fuel level is determined by fuel injection signals transmitted using the BEAN lines.

WIRING DIAGRAM


Lexus Is250, Is220D. Gse20 Ale20.Meter.Meter / Gauge System.Meter / Gauge System Fuel Receiver Gauge Malfunction


Lexus Is250, Is220D. Gse20 Ale20.Meter.Meter / Gauge System.Meter / Gauge System Fuel Receiver Gauge Malfunction


INSPECTION PROCEDURE

1.CHECK CAN COMMUNICATION SYSTEM

  1. Check if CAN communication DTC is output (Click here(for LHD), Click here (for RHD)).

    Result:

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


B
REPAIR CIRCUITS INDICATED BY OUTPUT DTCS
A


2.CHECK MULTIPLEX COMMUNICATION SYSTEM

  1. Check if MULTIPLEX communication DTC is output (Click here).

    Result:

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


B
REPAIR CIRCUITS INDICATED BY OUTPUT DTCS
A


3.PERFORM ACTIVE TEST BY INTELLIGENT TESTER

  1. Connect the intelligent tester to the DLC3.

  1. Turn the engine switch on (IG).

  1. Turn the tester ON.

  1. Enter the following menus: Diagnosis / Body / Combination Meter / Active Test.

  1. Check the values by referring to the table below.

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


NG
REPLACE COMBINATION METER ASSEMBLY
OK


4.READ VALUE OF INTELLIGENT TESTER

  1. Connect the intelligent tester to the DLC3.

  1. Turn the engine switch on (IG).

  1. Turn the tester ON.

  1. Enter the following menus: Diagnosis / Body / Combination Meter / Data Test.

  1. Check the values by referring to the table below.

    Combination Meter (for 4GR-FSE / 2AD-FHV)
    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 (1/2): 148
    Fuel gauge indicates (E): 205
    		-

    Combination Meter (for 2AD-FHV)
    Item
    		Measurement Item/Range (Display)
    		Normal Condition
    		Diagnostic Note
    Sub Fuel Gauge
    		Fuel input signal Min.: 0, Max.: 255
    		Fuel gauge indicates (F): 47
    Fuel gauge indicates (1/2): 148
    Fuel gauge indicates (E): 205
    		-
    OK:
    Fuel value signal displayed on the tester is almost the same as needle indication.


NG
Go to step 5
OK

REPLACE COMBINATION METER ASSEMBLY

5.INSPECT FUEL SENDER GAUGE ASSEMBLY


    Lexus Is250, Is220D. Gse20 Ale20.Meter.Meter / Gauge System.Meter / Gauge System Fuel Receiver Gauge Malfunction

  1. Disconnect the connectors from the fuel sender gauges.

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

    1. Inspect the fuel sender gauge for 4GR-FSE.

      Standard resistance:
      Fuel sender gauge for 4GR-FSE (Main):
      Tester Connection
      		Condition
      		Specified Condition
      Q14-2 (S) - Q14-3 (FE)
      		Always
      		6.5 to 242.6 Ω
      Fuel sender gauge for 4GR-FSE (Sub):
      Tester Connection
      		Condition
      		Specified Condition
      P10-1 (FS) - P10-2 (E)
      		Always
      		6.5 to 171.9 Ω

    2. Inspect the fuel sender gauge for 2AD-FHV.

      Standard resistance:
      Fuel sender gauge for 2AD-FHV (Main):
      Tester Connection
      		Condition
      		Specified Condition
      Q14-2 (S) - Q14-3 (FE)
      		Always
      		6.5 to 233.0 Ω
      Fuel sender gauge for 2AD-FHV (Sub):
      Tester Connection
      		Condition
      		Specified Condition
      P10-1 (FS) - P10-2 (E)
      		Always
      		6.5 to 181.5 Ω


NG
REPLACE FUEL SENDER GAUGE ASSEMBLY
OK


6.CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - FUEL SENDER GAUGE ASSEMBLY)


    Lexus Is250, Is220D. Gse20 Ale20.Meter.Meter / Gauge System.Meter / Gauge System Fuel Receiver Gauge Malfunction

  1. Disconnect the fuel tank wires from the fuel sender gauge assembly.

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

    Standard resistance for 4GR-FSE:
    Tester Connection
    		Condition
    		Specified Condition
    J34-19 (FR) - Q14-2 (S)
    		Always
    		Below 1 Ω
    Q14-3 (FE) - P10-1(FS)
    		Always
    		Below 1 Ω
    P10-2 (E) - J34-2 (FE)
    		Always
    		Below 1 Ω
    Q14-2 (S) - Body ground
    		Always
    		10 kΩ or higher
    P10-1 (FS) - Body ground
    		Always
    		10 kΩ or higher
    J34-2 (FE) - Body ground
    		Always
    		10 kΩ or higher
    Standard resistance for 2AD-FHV:
    Tester Connection
    		Condition
    		Specified Condition
    J34-2 (FE) - P10-2 (E)
    		Always
    		Below 1 Ω
    J34-3 (FSLH) - P10-1(FS)
    		Always
    		Below 1 Ω
    J34-7 (FSRH) - Q14-3 (FE)
    		Always
    		Below 1 Ω
    J34-19 (FR) - Q14-2 (S)
    		Always
    		Below 1 Ω
    P10-2 (E) - Body ground
    		Always
    		10 kΩ or higher
    P10-1 (FS) - Body ground
    		Always
    		10 kΩ or higher
    Q14-3 (FE) - Body ground
    		Always
    		10 kΩ or higher
    Q14-2 (S) - Body ground
    		Always
    		10 kΩ or higher
Result:
Result
Proceed to
OK (for 4GR-FSE)
A
OK (for 2AD-FHV)
B
NG
C


B
Go to step 8

C
REPAIR OR REPLACE HARNESS OR CONNECTOR
A


7.INSPECT FUEL SENDER GAUGE ASSEMBLY


    Lexus Is250, Is220D. Gse20 Ale20.Meter.Meter / Gauge System.Meter / Gauge System Fuel Receiver Gauge Malfunction

  1. Disconnect the fuel sender gauge connector.

  1. Inspect the fuel sender gauge assembly (main).

    1. Remove the fuel sender gauge assembly (main).

    2. Check that the float moves smoothly between F and E.

    3. Measure the resistance between terminals 2 (S) and 3 (FE) of the connector according to the value(s) in the table below.

      Standard resistance:
      Fuel Sender Gauge Assembly (Main) (for 4GR-FSE):
      Float Level
      		Resistance (Ω)
      F
      		6.5 to 8.5
      Between E and F
      		6.5 to 242.6 (Gradually changes)
      E
      		237.6 to 242.6

  1. Inspect the fuel sender gauge assembly (sub).

    1. Remove the fuel sender gauge assembly (sub).

    2. Check that the float moves smoothly between F and E.

    3. Measure the resistance between terminals 1 (FS) and 2 (E) according to the value(s) in the table below.

      Standard resistance:
      Fuel Sender Gauge Assembly (Sub) (for 4GR-FSE):
      Float Level
      		Resistance (Ω)
      F
      		6.5 to 8.5
      Between E and F
      		6.5 to 171.9 (Gradually changes)
      E
      		167.9 to 171.9


NG
REPLACE FUEL SENDER GAUGE ASSEMBLY
OK


Go to step 9

8.INSPECT FUEL SENDER GAUGE ASSEMBLY


    Lexus Is250, Is220D. Gse20 Ale20.Meter.Meter / Gauge System.Meter / Gauge System Fuel Receiver Gauge Malfunction

  1. Disconnect the fuel sender gauge connector.

  1. Inspect the fuel sender gauge assembly (main).

    1. Remove the fuel sender gauge assembly (main).

    2. Check that the float moves smoothly between F and E.

    3. Measure the resistance between terminals 2 (S) and 3 (FE) of the connector according to the value(s) in the table below.

      Standard resistance:
      Fuel Sender Gauge Assembly (Main) (for 2AD-FHV):
      Float Level
      		Resistance (Ω)
      F
      		6.5 to 8.5
      Between E and F
      		6.5 to 233.0 (Gradually changes)
      E
      		228.0 to 233.0

  1. Inspect the fuel sender gauge assembly (sub).

    1. Remove the fuel sender gauge assembly (sub).

    2. Check that the float moves smoothly between F and E.

    3. Measure the resistance between terminals 1 (FS) and 2 (E) according to the value(s) in the table below.

      Standard resistance:
      Fuel Sender Gauge Assembly (Sub) (for 2AD-FHV):
      Float Level
      		Resistance (Ω)
      F
      		6.5 to 8.5
      Between E and F
      		6.5 to 171.9 (Gradually changes)
      E
      		177.5 to 181.5


NG
REPLACE FUEL SENDER GAUGE ASSEMBLY
OK


9.REPLACE COMBINATION METER ASSEMBLY

  1. Replace the combination meter assembly to a new one or a normal one.

OK:
The operation of the combination meter assembly returns to normal.


NG
REPLACE ECM
OK

END