ENGINE ELECTRICAL 6D – 51
QOS II PREHEATING SYSTEM
GENERAL DESCRIPTION
QOS II preheating system features a quick-on glow
plug with thermometer control of the glowing time and
the afterglow time function.
The system consists of a controller, indicator lamp,
thermoswitch, relay, and glow plug (4pcs).
With the employment of the thermoswitch, the glow
time changes according to the engine coolant
temperature, thus allowing optimum starting conditions
to be obtained.