Service manual

3. Electrical Parts
3-21
3.3.3 Emergency indicator
SG06064
SDG125S/150S-6A6
List of functions
Pin No.
Line
color
Connection Function
CN15-1 L Auto start unit CN7-6 terminal
Put in the engine revolution pulse converted for
tachometer by PLC unit of auto start unit.
●Revolution ratio (pulse type):
2 revolutions per 1 pulse
CN15-2 W/G Tachometer No.4 terminal
Output the engine revolution pulse to tachometer
No.4 terminal.
●Revolution ratio (pulse type):
2 revolutions per 1 pulse
List of functions
Pin No.
Line
color
Connection Function
CN16-1 Y/L Auto start unit CN7-3 terminal
Output to auto start unit the engine revolution
pulse detected by alternator W terminal.
●Revolution ratio (pulse type):
1 revolution per 6 pulses
CN16-2 W/Y Alternator W terminal
Detect engine revolution pulse.
●Revolution ratio (pulse type):
1 revolution per 6 pulses
CN16-3 B Grounding
CN16-4 Y/B Controller F-17 terminal
During normal operation, it is not conducted
electrically.
Depending upon abnormal conditions, it inputs
applicable signals from controller F-17 terminal.
While the diagnostic lamp of emergency indicator
is flickering, push a diagnostic button to indicate
adequate flickering patterns depending the
abnormal symptoms. [For the details, see
Installation manual of Central unit EDC 4 (BY
VOLVO PENTA)]
Glow relay No.2 terminal
CN16-5 L/Y
Controller M-3 terminal
While engine is pre-heated, it is electrically
conducted between controller M-3 terminals.
Glow lamp goes on.
CN16-6 L/B Controller F-4 terminal
In case of engine trouble, it is electrically
conducted to make diagnostic lamp flicker.