ELECTRICAL
SYSTEM
Checking the alternator output
Connect as shown in the diagram opposite, using an ammeter (A), a volt-
meter (V), and a rheostat (R) or a Volt/Ammeter/Rheostat combination.
Referring to the vehicle’s equipment specification (see table opposite),
adjust the engine speed and rheostat charge to obtain U=13.5V.
Reminder : The excitation energising current will flow through the
warning lamp; check that the warning lamp comes on when the
ignition is switched on. It should go out when the engine has started
(accelerate slightly).
Checking the voltage regulator
Set the rheostat to zero and disconnect all the electrical consumers.
Display 5000 alternator rpm. If U alternator is > 14.7 V, the regulator
is faulty.
Note : These tests should be performed with the engine hot and the
battery fully charged.
CHARGING CIRCUIT - ALTERNATOR WITH MONO-FUNCTION REGULATOR.
D1AP01SC
12 72 A
90 A
Speed
Class
2000
rpm
3000
rpm
4000
rpm
5
7
8
9
29 A
42 A
49 A
62 A
39 A
54 A
62 A
76 A
43 A
59 A
68 A
83 A
100 A
15 99 A
128 A
140 A
Output under 13.5 V
Intensity (A) / Alternator speed
211
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