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Performing self diagnosis
Test prerequisites for self-diagnosis
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● The tyres fitted to all wheels must be of the same (approved) size; tyres inflated to prescribed pressure.
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● Mechanical/hydraulic parts of the brake system including brake light switch and brake lights OK.
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● Hydraulic pipes and connections not leaking (visual check of hydraulic unit, brake calipers, wheel cylinders, tandem master brake cylinder).
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● Wheel bearings and wheel bearing play OK.
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● Control unit -J104- is correctly bolted to hydraulic unit -N55.
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● Connector on control unit -J104- correctly plugged-in (retainer is engaged).
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● Check contacts of ABS components for damage and correct seating.
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● All fuses according to current flow diagram OK (remove fuse from fuse holder to check).
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● Supply voltage OK (at least 10.0 V).
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