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240
FIAT· 850 PASSENGER CARS
SERVICE
PROCEDURES
Fig. 372 • Rear view of the instrument cluster.
1. Speedometer-odometer cable attachment. - 2. No-charge in-
dicator. - 3. Low all pressure indicator.• 4. Fuel reserve supply
indicator•• 5. Six-Insert junclion block (red). _ 6. Direction signal
arrow tell-tale.• 7. Instrument cluster light. - 8. Six-insert junction
block (white). - 9. Coolant temperature warning light. - 10. High
beam Indicator. - 11. Parking light indicator.
Anow
points
10 the brass seal which is applied to
one
of three
in-
strument trame-fa-surround screws.
The instrument Is sealed to avoid meddling of odometer.
Instrument Cluster.
Any faults in the instrument cluster can be easily
located.
In
case one or more indicators fail to operate,
make sure that bulb, fuse, contacts and connections
Fig. 373 • Fuel gauge.
1. Sending unit. • 2. Sending unit ground cable. - 3. Sending unit
lead.• 4. Connector for fuel pump line.
are in good order, then check units with which
unserviceable indicators are wired.
Coolant Temperature Warning Light.
The glowing of the warning light indicates irregulo r
operation of engine.
Possible causes:
- thermal switch points bound;
- incorrect tension of generator
I
water pump
and fan drive belts;
fluid leakage from cooling system;
faulty thermostat in cylinder head;
poor performance of lubrication system.
Locate the source of trouble among the above
and correct as required.
Fuel Gauge.
Fuel gauge defects are mainly attributable to the
tank unit.
To replace the unit proceed as follows:
- disconnect the plus cable from battery ter-
minal post;
- remove the cover of the unit from engine
compartment partition wall;
-
disconnect cables (2 and 3,
fig.
373) and
line (4);
- remove mounting nuts and lift out the unit.
DIRECTION SIGNAL AND OUTER
LIGHTING SELECTOR SWITCH
The unit consists of two lever switches:
- direction signal switch which returns auto-
matically to off position when the turn has been
negotiated;
- selector switch controlling outer lights and
low beam flashes.
Above two switches fonn a centralized control
unit located under the steering wheel.
In
case of irregular operation of either switch,
renew the whole device.
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