Mitsubishi MOTORS Space Runner 1998, Workshop Manual

Page: 391 / 1164

ENGINE ELECTRICAL -
Charging System
16-5
6. Reconnect the negative battery cable.
7. Connect a tachometer or the MUT-
II
.
8. Leave the hood open.
9. Start the engine.
10. With the engine running at 2,500 r/min, turn
the headlamps and other lamps on and off
to adjust the alternator load so that the value
displayed on the ammeter is slightly above 30
A.
Adjust the engine speed by gradually
decreasing it until the value displayed on the
ammeter is 30 A. Take a reading of the value
displayed on the voltmeter at this time.
Limit: max. 0.3 V
NOTE
When the alternator output is high and the value
displayed on the ammeter does not decrease
until 30 A, set the value to 40 A. Read the
value displayed on the voltmeter at this time.
When the value range is 40 A, the limit is max.
0.4 V.
11. If the value displayed on the voltmeter is above
the limit value, there is probably a malfunction
in the alternator output wire, so check the wiring
between the alternator “B” terminal and the
battery (+) terminal (including fusible link).
If a terminal is not sufficiently tight or if the
harness has become discolored due to
overheating, repair and then test again.
12. After the test, run the engine at idle.
13. Turn off all lamps and the ignition switch.
14. Remove the tachometer or the MUT-
II
.
15. Disconnect the negative battery cable.
16. Disconnect the ammeter and voltmeter.
17. Connect the alternator output wire to the
alternator “B” terminal.
18. Connect the negative battery cable.
OUTPUT CURRENT TEST
Charging warning lamp
Voltmeter
Ammeter
Ignition switch
Alternator relay
Load
Battery
Engine
-ECU
Alternator
FR
L
S
G
+ - + -
B