Mitsubishi MOTORS Lancer 2004, Руководство по ремонту

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CHARGING SYSTEM
ENGINE ELECTRICAL 16-5
OUTPUT CURRENT TEST
M1161001000368
This test determines whether the alternator output
current is normal.
1. Before the test, always be sure to check the
following.
•
Alternator installation
•
Battery (Refer to GROUP 54A
−
Battery
−
On-vehicle Service P.54A-5 ).
NOTE: The battery should be slightly discharged.
The load needed by a fully-charged battery is
insufficient for an accurate test.
•
Drive belt tension
(Refer to GROUP 11A
−
On-vehicle Service <4G1>
P.11A-7 or GROUP 11C
−
On-vehicle Service
<4G6> P.11C-7 .)
•
Fusible link
•
Abnormal noise from the alternator while the
engine is running.
2. Turn the ignition switch to the "LOCK" (OFF)
position.
3. Disconnect the negative battery cable.
CAUTION
Never use clips but tighten bolts and nuts to
connect the line. Otherwise loose connections
(e.g. using clips) will lead to a serious accident
because of high current.
4. Connect a clamp-type DC test ammeter with a
range of 0
−
120 A to the alternator "B" terminal
output wire.
NOTE: The way of disconnecting the alternator
output wire and of connecting the ammeter is
possibly not found the problem that the output
current is dropping due to the insufficient
connection between terminal "B" and the output
wire.
5. Connect a voltmeter with a range of 0
−
20 V
between the alternator "B" terminal and the earth
[Connect the (+) lead of the voltmeter to the "B"
terminal, and then connect the (-) lead of the
voltmeter to the earth].
6. Connect the negative battery cable.
AK203362
Alternator
Ammeter
(clamp-type)
Voltmeter
Battery
Inition switch
Engine-ECU
<M/T> or
Engine-A/T-ECU
<A/T>
Load
B
FR
L
S
G
+
AH
–
Charging indicator
Brake warning light