Service manual

3. Electrical Parts
3-30
SG06065
SDG45S-6A6 (QHS controller)
(1) List of functions
Pin
No.
Line
color
Connection Function
1 - NIL
2 R/W 10A fuse Power supply
3 W Alternator L terminal
Detection of generation signal
In case that no start signal is sent to No.3 terminal
after No.8 terminal detects start signal, it cuts the
output of No.4 terminal, and it will not perform
after heating.
4 G/R Heater relay excitation coil
Power supply for excitation of heater relay
When start signal is inputted to No.8 terminal, it
begins pre-heating irrespective of water
temperature.
5 L/Y Controller No.5 terminal
While electricity flows, pre-heat lamp glows.
When electricity is given to No.2 terminal, the
contact between No.6 and No.5 terminals becomes
ON for a certain time (t1) and the pre-heating lamp
glows.
Further, while the pre-heating lamp glows, if start
signal reaches No.8 terminal, the contact between
No.6 and No.5 terminals gets OFF, and then the
lamp goes off.
6 B Grounding
7 B/W Water temperature sensor Detection of water temperature
8 R/L Starter switch C terminal Detection of starter signal