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
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direct lines. The meter CPU
displays engine revolution data that is calculated based on the data received
fro ...
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DESCRIPTION
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the multiplex
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Other materials:
DSP Error/ DSP Error
DTC 62-78 DSP Error
DTC 63-78 DSP Error
DESCRIPTION
INSPECTION PROCEDURE
HINT:
After the inspection is completed, clear the DTCs.
NOTICE:
These codes may be output even if there is no malfunction.
If these codes are output frequently, replace the radio receiver.
1 CLEA ...
Current Position Display does not Appear
INSPECTION PROCEDURE
1 CHECK RADIO AND NAVIGATION ASSEMBLY
Check if a map disc is inserted into the map disc slot.
OK:
A map disc is inserted
2 CHECK MAP DISC
Check that the map disc is not deformed or cracked.
OK:
No deformations or cracks appear on the map disc.
PROCEED ...
Disassembly
1. REMOVE BLOWER ASSEMBLY
(a) Remove the 2 screws and the blower assembly.
2. REMOVE MODE DAMPER SERVO SUB-ASSEMBLY
(a) Remove the 3 screws and the mode damper servo
sub-assembly.
3. REMOVE AIRMIX DAMPER SERVO SUB-ASSEMBLY
(a) Remove the 3 screws and the airmix damper servo
sub-as ...
