2-38
BF135A•BF150A
• INTERMITTENT SHORT SOUND OF WARNING BUZZER KEEPS SOUNDING
YES
NO
NO
Stop the engine. Check the water separa-
tor and the low pressure fuel strainer.
Is the water accumulated in the water sep-
arator and/or low pressure fuel strainer?
YES
Check for short in the water level sensor
line.
1 Turn the ignition switch OFF.
2 Check for continuity between the No. 2
(Green/Red) terminal of the water level
switch harness side 2P connector and
the engine ground.
Is there continuity?
Drain the water from the water separator
and/or the low pressure fuel strainer (P. 3-15).
YES
Replace the water level sensor in the water
separator.
Replace or repair the wire harness (Short in
the wire between the water level sensor and
ECM).
Disconnect the water level sensor 2P con-
nector.
Does the buzzer stop sounding with the
ignition switch turned ON?
NO
Substitute a known-good ECM and
recheck.
Water level switch
harness side
2P connector
Viewing from
terminal side