23A ELECTRICAL EQUIPMENT
If the warning light is not illuminated when the
switch is in the "on" position:
Check the bulb.
If no fault:
Check all the connections at the regulator, at the
alternator and at the battery.
If no fault:
Turn the switch to the "off" position. Disconnect
the wire from the "F" terminal on the alternator and
connect a wire between the "F" terminal and the
negative terminal on the alternator. Turn the switch
to the "on" position.
If the warning light shows, the fault is in the
regulator.
If the warning light does not show, the fault is in the
alternator.
If the warning light continues to show and the
ammeter shows no output when the alternator
is in operation:
Check all the connections at the regulator,
alternator and battery.
If no fault:
Turn the switch to the "off" position. Disconnect
the wire from the "F" terminal on the alternator and
connect a wire between the "F" terminal and the
negative terminal on the alternator. Turn the switch
to the "on" position and operate the engine at fast
idle.
If there is no output, there is a fault in the
alternator.
If there is an output, there is a fault in the regulator.
If the warning light continues to show when the
alternator is in operation and the ammeter
shows a reduced output with maximum output
only at maximum engine speed or,if the
warning light does not show, but there is a
reduced output from the alternator with
maximum output only at maximum engine
speed:
There is a fault in the alternator.
If there is an intermittent light from the warning
light and the ammeter needle is not stationary
when the battery is charged fully and no load is
applied:
Check for a higher than normal resistance in the
negative control wire of the regulator.
If the resistance is normal, there is a fault in the
regulator.
If the battery charge is too high and the ammeter
indicates high or maximum output at all times:
Check the positive control wire and its connection
at the regulator.
If the wire and its connection are correct, there is a
fault in the regulator.
23A.06 Perkins Phaser/1000 Series, April 1995
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