Service manual

3. Electrical Parts
3-26
Pin No.
Line
color
Connection Function
CN6-6 B/R 15A fuse Power supply for auto start unit.
Starter switch ACC terminal
Controller F-14 terminal
CN6-7 R/Y
Emergency indicator CN16-10
terminal
●Manual starting operation
Power supply for auto start unit.
During manual operation, power is supplied to
hour meter functioning signal output, engine
revolution speed detection and change,
prevention of starter motor overrunning, air
filter clogging detection are performed by auto
start unit.
●During automatic operation
Power supply for engine starting.
When remote start/stop switch is switched ON
and PLC unit XO terminal is electrically
conducted, the interior contact of Y2 terminal
becomes ON after 2 seconds, auto start unit No.7
terminal is electrically conducted to start
pre-heating operation.
Starter switch C terminal
CN6-8 R/L
Starter relay No.1 terminal
Output start signal at auto start-up.
When PLC unit XO terminal is electrically
conducted with remote start/stop switch ON, the
interior contact of PLC unit Y3 terminal becomes
ON after 4 seconds and start signal is outputted
to starter relay from auto start unit No.8
terminal.
Regarding the output of start signal, after
starter motor engaging signal (starting) is given
to auto start unit No.4 terminal, and PLC unit
X1 terminal is electrically conducted, the
interior contact of Y3 terminal becomes OFF and
cuts the output.
Consequently auto start cranking operation
stops.
CN6-9 B Grounding