Meter / Gauge System Fuel Receiver Gauge Malfunction

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK CAN COMMUNICATION SYSTEM

PERFORM ACTIVE TEST USING INTELLIGENT TESTER

READ VALUE USING INTELLIGENT TESTER

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

INSPECT FUEL SENDER GAUGE ASSEMBLY

REPLACE COMBINATION METER ASSEMBLY

DESCRIPTION

1. 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.
   

HINT:

The fuel level warning light will come on when the fuel level is below 10.5 liters.

WIRING DIAGRAM

INSPECTION PROCEDURE

1. Check if CAN communication DTC is output (CAMRY_ACV40 RM000000WIB09JX.htmlfor LHD, CAMRY_ACV40 RM000000WIB09KX.html for RHD).
   

Result:

Result	Proceed to
CAN communication DTC is not output	A
CAN communication DTC is output	B (CAMRY_ACV40 RM000000WI608IX.htmlfor LHD, CAMRY_ACV40 RM000000WI608JX.html for RHD)

1. Connect the intelligent tester to the DLC3.
   

2. Turn the ignition switch to the ON position.
   

3. Turn the tester ON.
   

4. Enter following menus: Diagnosis / OBD/MOBD / Combination Meter / Active Test.
   

5. Check the operation by referring to the table below.
   
   

   Combination Meter:

   Tester Display	Test Part	Control Range	Normal Condition
   Fuel Meter Operation	Fuel receiver gauge	EMPTY, 1/2, FULL	-

   OK:

   Needle indication is normal.
   

1. Connect the intelligent tester to the DLC3.
   

2. Turn the ignition switch to the ON position.
   

3. Turn the tester ON.
   

4. Enter following menus: Diagnosis / OBD/MOBD / Combination Meter / Data List.
   

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

   Combination Meter:

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   Fuel Input	Fuel input signal Min.: 0, Max.: 255	Fuel gauge indicates (F): 35 Fuel gauge indicates (3/4): 85 Fuel gauge indicates (1/2): 145 Fuel gauge indicates (3/4): 186 Fuel gauge indicates (E): 205	-

   OK:

   Fuel value signal displayed on the tester is almost the same as needle indication.
   

1. Disconnect the F2 and N10 connectors.
   

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

   Standard resistance:

   Tester Connection	Condition	Specified Condition
   F2-15 (FR) - N10-2	Always	Below 1 Ω
   F2-16 (FE) - N10-3	Always	Below 1 Ω
   N10-2 - Body ground	Always	10 kΩ or higher
   F2-16 - Body ground	Always	10 kΩ or higher

1. Disconnect the fuel sender gauge connector.
   

2. Remove the fuel sender gauge assembly.
   

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

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

   Standard resistance:

   Float Level	Resistance (Ω)
   F	13.5 to 16.5
   Between E and F	13.5 to 414.5 (Gradually changes)
   E	405.5 to 414.5

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

OK:

The operation of the combination meter assembly returns to normal.