6D6-2 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 after-
glow time function.
The system consists of a timer, indicator lamp, thermosensor, relay and temperature self-control type glow plug (4
pcs).
With the employment of the thermosensor, the glow time changes according to the engine coolant temperature, thus
allowing optimum starting conditions to be obtained.
The afterglow time function is controlled by thermosensor.