Toyota Sienna Service Manual: Fuel Receiver Gauge Malfunction
DESCRIPTION
The meter CPU uses the fuel sender gauge assembly to determine the level of the fuel in the fuel tank.
The resistance of the fuel sender gauge will vary between approximately 15 Ω with the float at the full position, and 410 Ω with the float at the empty position. The meter outputs battery voltage through two 820 Ω resistors that are mounted in parallel inside the meter ECU. The meter CPU measures the voltage between the variable resistor in the fuel sender gauge and the two resistors mounted in parallel in the meter. Voltage measured at this point will vary as the float of the fuel sender gauge is moved. The highest voltage observed should be approximately half of battery voltage.
WIRING DIAGRAM
INSPECTION PROCEDURE
1 PERFORM ACTIVE TEST BY INTELLIGENT TESTER
- Connect the intelligent tester to the DLC3.
- Turn the ignition switch to the ON position.
- Turn the tester ON.
- Enter following menus: DIAGNOSIS / OBD/MOBD / METER / ACTIVE TEST.
- Check the operation by referring to the values in the table below.
METER:
OK: Needle indication is normal.
2 READ VALUE OF INTELLIGENT TESTER
- Connect the intelligent tester to the DLC3.
- Turn the ignition switch to the ON position.
- Turn the tester ON.
- Enter following menus: DIAGNOSIS / OBD/MOBD / METER / DATA LIST.
- Check the values by referring to the values in the table below
METER:
OK: Fuel value signal displayed on the tester is almost the same as needle indication
3 INSPECT FUEL SENDER GAUGE ASSEMBLY
- Disconnect the connector from the fuel sender gauge.
- Check the the float moves smoothly between F and E.
- Measure the resistance between terminals 1 and 2 of the connector according to the value(s) in the table below.
Standard resistance: Fuel sender gauge
4 CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - FUEL SENDER GAUGE ASSEMBLY)
- Disconnect the F20 and C10 connectors.
- Measure the resistance according to the value(s) in the table below.
Standard resistance
REPLACE COMBINATION METER ASSEMBLY
Tachometer Malfunction
DESCRIPTION
The meter CPU receives the engine revolution signal from the ECM via the
direct lines. The meter CPU
displays engine revolution data that is calculated based on the data received
fro ...
Engine Coolant Temperature Receiver Gauge Malfunction
DESCRIPTION
The meter CPU receives engine coolant temperature signals from the ECM via
the multiplex
communication lines. The meter CPU displays engine coolant temperature that is
calculated bas ...
Other materials:
Back Door Courtesy Switch Circuit
DESCRIPTION
The fold seat control ECU receives signals from the back door courtesy switch
and detects the state of the
back door (open/close). If the ECU does not detect that the back door is open,
the seat stowing and return
functions are not available.
WIRING DIAGRAM
INSPECTION PROCED ...
Vanity light
ON-VEHICLE INSPECTION
1. LH VISOR ASSEMBLY
Inspect vanity light resistance.
check that the resistance exists between the
terminal 1 and the terminal 2 when the light is
operated.
Resistance:
OFF (closed):
10 kΩ or higher
ON (opened):
Below 1 Ω
2. RH VISOR ...
Removal
HINT:
Use the same procedures for the RH side and LH side.
The procedures listed below are for the LH side.
1. PRECAUTION
CAUTION:
Be sure to read "PRECAUTION" thoroughly before
servicing.
2. DISCONNECT CABLE FROM NEGATIVE BATTERY
TERMINAL
CAUTION:
Wait for 90 s ...
