Fuel Gauge: Testing and Inspection
FUEL GAUGE UNIT CHECKRemove the fuel pump module to remove the fuel gauge unit.
FUEL GAUGE UNIT RESISTANCE
1. Check that resistance value between the fuel gauge terminal and ground terminal is at the standard value when the fuel gauge unit float is between point "F" (highest) and point "E" (lowest).
Standard value:
Point "F": 3 - 5 Ohms
Point "E": 110 - 112 Ohms
2. Check that resistance value changes smoothly when the float moves slowly between point "F" (highest) and point "E" (lowest).
3. If all checks are correct, go to fuel gauge unit float height check. If any check is not correct, replace the fuel gauge unit.
FUEL GAUGE UNIT FLOAT HEIGHT
1. Move the float and measure height A at point "F" (highest) and B at point "E" (lowest) with the float arm touching stopper.
Standard value:
A: 180.3 mm (7.10 inches)
B: 18.8 mm (0.74 inches)
2. Adjust the float arm to the standard value, then go to the thermistor check.
FUEL GAUGE RESISTANCE CHECK
CAUTION: When inserting a testing probe into the power supply terminal, be careful not to touch the printed board.
1. Remove the power supply tightening screw.
2. Use an ohmmeter to measure the resistance value between the terminals.
Standard value:
Power supply - Ground: Approximately 95 Ohms
Power supply - Fuel gauge: Approximately 87 Ohms
Fuel gauge - Ground: Approximately 98 Ohms
3. If within the standard value, the fuel gauge is OK. If not within the standard value, replace the fuel gauge and engine coolant temperature gauge.