Alternator Circuit - Lotus Esprit Series Workshop Manual

\U,
(d)
(e)
ESPRIT
r w d i n g (ignore very small readin g s) this w i l l indicate o short circuit
i n the diode block.
REGULATOR
FIG. 8 ALTERNATOR CIRCUIT (MOTOROLA)
.
ground, and ttie positive terminal of the battery and ground. The
voltmeter reodings should be the same and steady a t
broken wires or corroded terrninols.
ignition, with engine not running, and check the voltage
a t the field brush with the regulator unscrewed, but connected.
Connect the voltmeter positive to the outer field brush and the
voltmeter negotive to ground.
2
I f
volts. reading is more than
reading i s volts check the regulator connections, ignitian lead t o
switch and indicator lamp.
W i t h ignition on and engine not rurining, check the regulator circuit
by
f i e l d winding. The reading should be
8 12
volts, then check the current output as i n (e) and
between and
Carry out a resistance check on the field winding to ensure i t i s not
shorted out, as a short c w l d dornage the ammeter i n the following
test. I f a resistance reading i s obtoined (approx.
disconnect the field lead and connect a
(B+)
the output terminal
.
The reading should not be greater
2
volts, check brushes and
2
volts moximum and
0-3
amp ammeter between
and the field terrninal.
.
.
12 If
volts.
i f
i f
i t is
1 2
t o ohms) then
Stort engine and set
I
.