Starting and charging

STARTING AND CHARGING

DESCRIPTION

General

The starting system on the vehicle comprises a 12 V starter motor which drives the engine to start the combustion process.

The charging system consists of an alternator that contains a rectifier pack and regulator to maintain a constant direct current (dc) voltage in the system. The alternator is belt driven from the crankshaft and cooled by a fan mounted behind the pulley. The alternator has a fixed coil wound stator in which a field coil rotor rotates. Slip rings conduct current to and from the field coils via 2 carbon brushes. The regulator senses output voltage and controls this to 14 volts. The instrument pack incorporates a charge warning lamp which illuminates when there is no output or a low output from the alternator.

OPERATION

Power supplies

The starter motor (C0849) receives a permanent feed direct from the battery (C0631) on a N wire. The starter motor (C0178) supplies the feed to the alternator (C0183) on a N wire via an in-line 80A alternator fuse (C0602).

Fuse 1 (C0571) of the under bonnet fuse box supplies a permanent feed to the switch contacts of the starter relay (C0157), in the engine management relay module, on a N wire.

Fuse 2 (C0571) of the under bonnet fuse box supplies a permanent feed to the inertia switch (C0123) on a N wire. The inertia switch (C0123) supplies the feed to the alarm ECU (C0057) and the switch contacts of the fuel pump relay (C0157), in the engine management relay module, on NS wires.

Fusible link 4 (C0570) of the under bonnet fuse box supplies a permanent feed to the ignition switch (C0028) on a NP wire. When the ignition switch is in position II or III, a power feed is connected from the ignition switch to fuses 1 and 14 (C0099) of the passenger compartment fuse box on a BY wire. Fuse 1 (C0590) supplies the feed to the ignition/no charge warning lamp (C0230) in the instrument pack on a G wire; the opposite side of the ignition/no charge warning lamp (C0230) is connected to the alternator (C0185), via the passenger compartment fuse box (C0590 and C0585) by NY wires. Fuse 14 (C0585) supplies the feed to the coil of the fuel pump relay (C0154) on a W wire.

When the ignition switch (C0028) is in position III, a power feed is also connected to fuse 19 (C0595) in the satellite fuse box on a WR wire. Fuse 19 (C0595) supplies the feed to the coil of the starter relay (C0154) on a WR wire.