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ELECTRICAL
58
Normal operating Mode
The diagram shown the proceeding of the signals
in the function of time during the phase of pre or
post heating during normal functioning condition.
Application:
The device driven by ECU system with a
diagnosis protocol EOBD (European On Board
Diagnose) drives & checks the operating state of
each glow plug during pre & post heating phases
of diesel engine made by 4 cylinders. The
operating mode is controlled by wiring harness
through command & feedback. A protection for
high current & overload voltage is integrated & it’s
supplied by the control system.
Location:
The glow plug controller mounted directly in
engine compartment.
Command & feedback Signal Description:
Command signal:
The glow plugs are supplied by control unit with
battery voltage (12V). The glow plug temperature
is controlled by ECU through a function stored
in memory, which links glow plug temperature with
the duration of heat signal (12V).
Feedback Signal:
Feedback signal given by glow plug controller to
EMS ECU. Glow plug informs the EMS ECU what
the command given by ECU is followed.