H2O in Fuel Sensor (GM 3000–D)

The sensor is located on the fuel filter assembly, which is inside the center shroud area to the left side of the en­ gine. It energizes a red warning light when too much wa­ ter has collected in the fuel filter bowl (Fig. 42).

1.Make sure engine is OFF. Remove start relay from the control center.

2.Disconnect connector from the sensor. Verify cir­ cuitry to the sensor at the connector using a multimeter and the following steps:

A.Place ignition switch in RUN. Battery voltage from the pin for the blue wire to chassis ground should be indicated and the red warning light should come on. Turn switch OFF.

B.Hold ignition switch in START. Battery voltage from the pin for the white wire to chassis ground should be indicated. Turn switch OFF.

C.Check continuity from the pin for the black wire to

chassis ground. Continuity should be 1 ohm or less.

D.Correct any problem circuitry if necessary.

3.Drain fuel filter assembly into a suitable container.

4.Unscrew fuel filter bowl from the assembly. Remove filter element, gaskets, and O–ring from the assembly. Store seals in a clean place (Fig. 43).

5.Reconnect connector to the sensor. Fill fuel filter bowl with tap water.

6.Test sensor using the following steps:

A.Place ignition switch in RUN. The red warning light should come on. Turn switch OFF.

B.Hold ignition switch in START. The red warning light should come on. Turn switch OFF.

7.Drain water from the fuel filter bowl. Test sensor us­ ing the following steps:

A.Place ignition switch in RUN. The red warning light should stay off. Turn switch OFF.

B.Hold ignition switch in START. The red warning light should stay off. Turn switch OFF.

FILTER ASSEMBLY

SENSOR

Figure 42

FILTER

ASSEMBLY

O–RING

FILTER ELEMENT

GASKET

GASKET

FUEL FILTER

SENSOR

BOWL

 

DRAIN

PLUG

Figure 43

8.Disconnect connector from sensor. Reassemble fuel filter assembly. Reconnect connector to sensor.

9.Replace sensor with new one if necessary.

10.Reinstall start relay to the control center.

Electrical System

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Groundsmaster 3000/3000–D

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Image 130
Toro 3000D manual H2O in Fuel Sensor GM 3000-D, Electrical System Groundsmaster 3000/3000-D