Fuel Tank Pressure & Temperature Sensor
- Remove fuel tank pressure and temp. sensor from fuel tank. Check sensor air vent hole and pressure passage for clog. Clean if clogged. Check sensor O-ring for damage and deterioration. See Fig 1
. Replace as necessary.
- Arrange 3 new 1.5-volt batteries in series (check that total voltage is 4.5-5.0 volts) and connect its positive terminal to "A" terminal of tank pressure and temp. sensor and negative terminal to "B" terminal. Then check voltage between "C" and "B". Also, check if voltage reduces when vacuum is applied up to 6.6 kPa (50 mmHg) by using vacuum pump and if it increases when positive pressure applied up to 6.6 kPa (50 mmHg) by using hand pump. See Fig 2
. If measured voltage doesn't shown such characteristic as shown in the figure, replace fuel tank pressure and temp. sensor.
CAUTION:
As connection to wrong terminal will cause damage to tank pressure and temp. sensor, make absolutely sure to connect properly as shown. See Fig 2
. Do not apply pressure higher than 98 kPa (742 mmHg) to tank pressure and temp. sensor by hand pump. Applying excessive pressure will break it.
- Immerse temperature sensing part of fuel tank pressure and temp. sensor in water (or ice) and measure resistance between sensor terminal "A" and "B" while heating water gradually. See Fig 3
. If measured resistance doesn't show such characteristic as shown in the figure, replace Fuel Tank pressure and temperature sensor.
Courtesy of SUZUKI OF AMERICA CORP.
Courtesy of SUZUKI OF AMERICA CORP.
Courtesy of SUZUKI OF AMERICA CORP.