Troubleshooting At Engine Monitor And Display - Hatz 2-4L30 Workshop Manual

Trouble-shooting table for electrical system
Trouble-shooting at engine monitor and display
Malfunction
Sudden pressure drop in
lubricating oil circuit.
Engine cannot be stopped
at valve solenoid or fuel
shut-off valve.
Incorrect display, light
does not burn although a
fault is present.
No display, display light
does not burn despite
malfunction.
Engine protection relay: see „Instrument box"
Cause
Leak in oil circuit.
Oil lost from damaged sump.
Defective oil pump.
Defective valve solenoid or fuel
shut-off valve.
Defective diode between generator
telltale light and terminal 15 at
pre-heat/start switch, or diode by-
passed.
Short to earth (ground) in wire or
switch.
Defective switch.
Broken wire.
Defective switch or relay.
Defective bulb.
Remedy
Check lines and seals, renew if
necessary.
Renew the oil sump.
Renew the oil pump.
Examine parts and renew if
necessary.
Check the circuit and renew the
diode if necessary.
Check wiring and eliminate short
to earth.
Renew switch.
Renew broken wire.
Renew defective components..
Renew the bulb.
L / M . . / 07.96
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