83A-12
AFTER REPAIRCheck for correct operation.
V1 MR-376-X76-83A000$020.mif
INSTRUMENT PANEL INSTRUMENTS
Fault finding – System operation83A
Warning light Command Tested Signal transmitter
10Handbrake applied + low brake
fluid (without ABS)
EarthNOHandbrake switch + Low
brake fluid switch
Handbrake applied + low brake
fluid + electronic braking
distribution (with ABS)3 seconds via ABSHandbrake switch + Low
brake fluid switch + ABS
computer
12 ABS system (active)Earth 3 seconds via ABS ABS computer
13 AirbagEarth 3 seconds by Airbag Airbag computer
Airbag OffEarth 3 seconds by Airbag Airbag computer
14 Heated rear screenEarthNO (but illuminated when
engine stopped)Relay plate
14 Minimum fuel level alertEarth3 seconds Instrument
panelInstrument panel
management - sender unit
signal
15 OBDEarth 3 seconds by injection Injection computer
16 Seat belt reminderEarthNO (but illuminated when
engine stopped)Seat belt switch
83A-35
AFTER REPAIRCheck for correct operation.
V1 MR-376-X76-83A000$060.mif
INSTRUMENT PANEL INSTRUMENTS
Fault finding – Fault Finding Chart83A
ALP11
CONTINUED 2
The vehicle speed signal is delivered to the other computers via the ABS computer.
Run a diagnostic sequence on the instrument panel.
Check the correct operation of the needle in all the speed ranges.
If the self-test sequence is not correct, contact the Techline.
Using the diagnostic tool, check that the UCH is correctly receiving the vehicle speed signal during a road test.
If there is no "vehicle speed" signal on the UCH:
Check the connection and condition of the connectors.
If the connector is faulty and there is a repair method (see Technical Note 6015A, Repairing electrical wiring,
Wiring: Precautions for repair), repair the connector, otherwise replace the wiring.
Check the condition of the ABS computer protective fuse. Check that the injection relay, component code 238, is
operating correctly. Replace it if necessary.
Check the insulation, continuity and absence of interference resistance on the following connection:
–AP5 between components 260 and 118.
If the connection is faulty and there is a repair procedure (see Technical Note 6015A, Electrical wiring repair,
Wiring: Precautions for repair), repair the wiring, otherwise replace it.
