3239254 - E1010 SUPPLY - Functional description (Mechanical gearbox)

Functional description

All the electrical equipment and systems are supplied by the battery A1.

The main supply lines are protected by the MAXIFUSE box B99 which contains the fuses named according to the circuits protected:

  • J/B1: supply for services through the junction unit
  • IGN : ignition switch supply;
  • J/B2 : supply for services through the junction unit
  • A/C: air conditioning system supply
  • EFI : supply for fuses and relays for engine management
  • FAN1 : engine cooling fan supply;
  • FAN2: engine cooling fan supply
  • GLOW : (JTD versions) diesel heater plugs supply

The fuse box also contains two 'MIDI' fuses, named according to the circuits protected.

  • ABS : ABS supply: A1, connector C
  • JTD versions
  • HEAT: (JTD versions) additional heater supply: A1, connector D

Other circuits are supplied by turning ignition key H1 to various different positions:

  • in the ON position, numerous circuits and services controlled by the ignition (INT line) are supplied.
  • in the AVV position - the starter motor is supplied; (line '50') ( See E5010  STARTING AND RECHARING): In this position several circuits are disconnected (line 'INT/A'.
  • in the PARK position the side lights are supplied ('STAZ' and 'POS' lines); See E2010  SIDE LIGHTS / NO. PLATE LIGHTS