Baroness LM331, Service Manual, Page: 91 / 165

Glow (thermo-start)
When the ignition key is kept in the "GLOW"
position, the glow plug is generating heat
and the thermo-start lamp is turned on.
The lamp turns off at the specified time.
However, the lamp turning off is not related
to the glow plug generating heat, and the
plug is kept heated as long as the key is in
"GLOW" position even after the lamp is
turned off.
The glow lamp will stay illuminated for five
seconds.
The glow plug is located at engine head of
each cylinder and is connected by the plate.
The electrical circuit is grounded at the
engine block.
OFF
ON
GLOW
START
2
1
6raejy-003
Glow (thermo-start)_001
1 Glow plug
2 Plate
START
The engine starts by rotating the starter
motor, when the magnet switch of the starter
motor is energized with the key at "START"
position.
Only if the specified activation conditions are
satisfied, the starter motor can be activated.
OFF
ON
GLOW
START
pff35r-001
START_001
￭
￭
Pilot Lamps
Status of charge of the engine, thermo-start,
engine oil pressure is displayed with
illumination of the lamps.
- +
3
3
3 1
2
2
1
2 1
tjy2ah-003
Pilot Lamps_001
1 Charge
2 Thermo-start
3 Engine oil pressure
Charge
The charge lamp lights up when the ignition
key is set to the "ON" position before the
engine starts. It turns off when the engine
starts and the alternator starts operating
properly.
The internal circuits of the alternator control
when to turn the charge lamp on and off.
If the charge lamp lights up during the engine
running, there may be a failure in charging
due to malfunction of the alternator drive belt
or the IC regulator inside the alternator, etc.
1
ir6eja-001
Charge_001
1 Alternator
Electrical system
LM331
Electrical system
Page 5-17
Electrical components