Service manual

90-898303

3-12

Warning control of LOW-OIL, WATER SEPARATOR and OVER-HEAT

conditions. Warning is provided through activation of a horn and indicator

lamps. A LOW-OIL condition exists when switch in engine-mounted oil tank is

shorted to ground (CLOSED). A WATER SEPARATOR condition exists when

excessive water accumulates in the bottom of the separator to short out the

sensor. In either case, 30 seconds after switch is closed, the warning lamp will

illuminate and the warning horn will be activated. The horn will beep 4 times in

1 second intervals followed by a 2 minute off-period. It will then repeat its beep

sequence. Continuous lamp illumination and horn beep sequence will occur

until the key switch is turned off. If there is no LOW-OIL condition then the

WATER SEPARATOR must be checked. An OVER-HEAT condition occurs

when the coolant temperature rises above 200°F (93.3°C). The warning lamp

will illuminate and the over-heat horn will sound continuously. The ECM will

retard the ignition timing until a maximum RPM of approximately 3000 is

obtained. The ECM will maintain this RPM until engine temperature drops to

190°F (87.8°C).

Idle stabilizer function by advancing the ignition timing the number of degrees

indicated, following, at the respective RPM.

RPM DEGREES

450 3°

Below 450 6°

Throttle position and engine temperature sensor failure warning

to boat

operator. Sensor failure is indicated by alternately illuminating the low-oil and

over-heat lamps as well as activating the warning horn. This warning will occur

15 seconds after a sensor failure has been detected by the ECM. The warning

will continue until the key switch is turned off or sensor problem is corrected.

Controls Power-Up Sequence

– 1/2 second after ignition key is turned to

“ON”, and power is applied to ECM, warning lamps will illuminate for 1/2

second and horn will beep for 1/2 second.

1996– 2001 MODEL ADDITIONAL ECM FEATURES

Prom identification with Digital Diagnostic Terminal. Refer to Quicksilver

Technician Reference Manual shipped with new diagnostic cartridge.

Air temperature and/or MAP sensor failure will sound an intermittent warning

horn and alternately flash the low oil and overheat lights on the dash.

Fuel ECM wire harness plug disconnect will sound an intermittent warning

horn and alternately flash the low oil and overheat lights on the dash. Engine

will not run.

NOTE: An ignition ECM failure will not activate the warning horn as the

warning signal originates from the ignition ECM.

Notes

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