Service manual

3. Electrical Parts
3-28
3.3.5 Glow timer
SDG25S-6A7,SDG65S-6A6(QOSⅢ timer)
(1) List of functions
Pin
No.
Line
color
Connection Function
1 B Grounding
2 G/R Glow relay
For exciting glow relay
For pre-heating function, it forms excitation circuit
with connection of No.1 terminal (grounding).
When starter switch is switched ON, pre-heat lamp
goes on and pre-heating starts.
While starter motor starting signal is inputted to
No.6 terminal from safety relay No.6 (C) terminal,
the pre-heating operation continues irrespective of
cooling water temperature.
3 B/W Water temperature sensor Detection of water temperature
4 R/W 10A fuse Power supply
5 L/Y Controller No.5 terminal
Pre-heating LED glows.
During pre-heating operation, LED glows, connected
to No.1 terminal (grounding).
6 W Safety relay No.6 (C) terminal Detection of start signal
The items in the parenthesis show the connection points of SDG65S.
1
2
3
4
5
6