Page 12 of 59
83A-12
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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
Page 14 of 59
83A-14
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V1 MR-376-X76-83A000$030.mif
INSTRUMENT PANEL INSTRUMENTS
Fault finding – Allocation of computer tracks83A
CONNECTOR (24-track black)
Tracks Description
1Control - software lock indicator light
2Coolant temperature warning light - control
3Right turn signal indicator light
4Emission control fault warning light
5Rear fog lights indicator light
6Front fog lights indicator light
7 Earth
8Earth
9+ Battery supply
10After ignition supply
11+ Side lights supply
12Coolant temperature + signal
13Alternator charge warning light - control
14Left turn signal indicator light
15Preheating/electronic fault warning light
16Handbrake + fluid level warning light - control
17Heated rear screen indicator light
18Not used
19Not used
20Airbag fault warning light
21Rev counter signal
22Vehicle speed signal
23Trip computer scroll - control
24Fuel sending unit + signal
Page 17 of 59
83A-17
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V1 MR-376-X76-83A000$050.mif
INSTRUMENT PANEL INSTRUMENTS
Fault finding – Customer complaints83A
LEVEL 1 INJECTION FAULT
THE WARNING LIGHT REMAINS LIT ALP10
VEHICLE SPEED
DISPLAY AT ZERO OR INCONSISTENT SIGNAL ALP11
AIRBAG FAULT
THE WARNING LIGHT REMAINS LIT ALP12
OIL PRESSURE WARNING
THE WARNING LIGHT REMAINS LIT ALP 13
DIRECTION INDICATOR LIGHTS
THE WARNING LIGHT OPERATES INCONSISTENTLY ALP14
REAR FOG LIGHTS
THE WARNING LIGHT OPERATES INCONSISTENTLY ALP15
Page 37 of 59
83A-37
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V1 MR-376-X76-83A000$060.mif
INSTRUMENT PANEL INSTRUMENTS
Fault finding – Fault Finding Chart83A
ALP12Airbag fault warning light remains lit
Signal provided by the airbag computer
Run fault finding on the "airbags and pretensioners" function.
Deal with any other faults.
Check the insulation, continuity and the absence of interference resistance on the following connection:
–60A between components756 and 247.
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.
If the fault is still present, contact the techline.