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D
E
4
AILY
URO
761917
Glow plug electronic control unit
Figure 348
During the phases below:
- starting phase,
- post-starting phase,
the engine management control unit will time the plug
preheating control unit operation depending on the engine
temperature.
The plugs will be triggered through the plug preheating control
unit, depending on the engine temperature, under direct
control of the engine management control unit.
The preheating control unit incorporates a "smart"
remote-control switch that sends a return response
("feed-back") to the management control unit: the latter will
therefore be informed about the preheating control unit
failure (if any) or the plug short-circuit to the ground.
761915
Glow plugs
Figure 349
CONTROL VALUES
With a constant supply voltage of 11 V:
- max. current drawn
- min 5 sec.
- in 30 sec.
- temperature after 7 sec.
- tightening torque
Print 603.93.651
SENSORS
764266
It is an inductive sensor and is positioned on the phonic wheel
fitted on the front end of the drive shaft
It generates the signals resulting from the magnetic flow lines
which close through the teeth of the phonic wheel.
Tooth number 58.
The electronic control unit uses this signal to measure the
speed of rotation of the engine, its angular position and to
operate the electronic rev counter.
If this signal fails the rev counter will not work.
764264
It is an inductive sensor and is positioned on the camshaft gear
of the suction valves.
It generates the signals resulting from the magnetic flow lines
which close through a slot on the gear itself.
The signal generated by this sensor is used by the electronic
control unit as a redundant signal to measure the different
75578
engine speeds.
Figure 350
75579
18 A
The sensor gap shall be as follows:
11 ±1.5 A
- 1 + 0.5 mm, between distributing shaft pulley (4) and
6 ±0.9 A
phase sensor (1);
850°C
- 1 mm, between phonic wheel (2) and revs sensor (1).
8-10 Nm
Engine speed sensor
Camshaft timing sensor
SENSOR ASSEMBLING DIAGRAM
309
F1C ENGINE
88056
Base - March 2006
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