1242 - 1581 - 1998 - 1910 Jtd Engines; 1910 T D 75 Engine (Soft) - Fiat Bravo Service Manual

Bravo-Brava
98 range
C a s e A : the engine management control unit (1) receives the signal to engage the compressor (a) d i -
rectly f r o m the control switch ( 2 ) : the same signal also arrives as a go ahead (b) after having passed
through the climate control control unit (3) and the four stage pressure switch (4): if the pressure is in
the refrigeration circuit is not correct, this signal is, in effect, interrupted. Lastly, if other particular exclu-
sion conditions exist (e.g. maximum power request, idling, etc.), then the control unit (1) sends the
command (c) to engage the compressor (6) via the relay ( 5 ) .
C a s e B: the signal (a) t o engage the compressor is sent, from the control switch (2), via the climate c o n -
trol control unit ( 3 ) , the four stage pressure switch (4) and the thermal switch (7), to the compressor
engagement relay ( 5 ) . If the conditions for disengaging the compressor (6) exist, (for example maxi-
mum power request, idle speed, etc.), then a signal (b) is sent by the EGR control unit (1) to a remote
control switch (8) and the compressor is switched off.
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Auxiliary units
1242 - 1581 - 1 9 9 8 - 1910 J T D Engines
1. Injection control unit
2. Climate control controls
3. Climate control control unit
4. Four stage pressure switch
5. Compressor relay
6. Compressor

1910 T D 75 engine (Soft)

1 . EGR control unit
2. Climate control controls
3. Climate control control unit
4. Four stage pressure switch
5. Compressor relay
6. Compressor
7. Thermostatic switch on water p u m p
8. Remote control switch for disengaging
compressor
Climate control
50.
5