Operation

9. Finally, OPEN and CLOSE the drivers door. If the code has been entered correctly, the anti-theft indicator lamp will extinguish and the engine can be started.

NOTE: If the vehicle has been previously armed, and the handset is inoperative, the alarm will sound throughout the EKA entering process.

OPERATION

Feed from the positive battery terminal is connected to the engine compartment fuse box (C632-1) by a brown wire. Current flows through fusible link 1 and fusible link 2 of the engine compartment fuse box, which are connected in parallel. Fusible link 1 (C907-1) supplies a constant battery feed to;

• The BBUS (C666-2) on a black wire,
• Fuse 21 (C965-1) on a brown wire,
• Pin 86 (C964-30) of the alarm sounder relay on a brown wire,
• Pin 30 (C964-30) of the alarm sounder relay on a brown wire,
• The anti-theft alarm LED (C240-2) on a brown wire.

Fusible link 2 (C907-2) supplies a feed to;

• The ignition switch (C028-1) on a brown wire,
• The starter relay (C151-87) on a brown wire,
• Fuse 1 (C580-1) of the passenger compartment fuse box on a brown wire,
• Fuse 2 (C580-3) of the passenger compartment fuse box on a brown wire.

ALARM

Fuse 21 (C965-2) supplies a constant battery feed to the alarm ECU (C061-25) on a brown wire. The alarm ECU is supplied a permanent earth (C057-11) by a black wire. The alarm ECU (C057-8) also receives a constant battery feed from fuse 1 of the passenger compartment fuse box (C580-2) on a purple wire. This feed is then used to power the hazard warning lamps (C057-1 & C057-6).

When the vehicle alarm has been armed, the alarm ECU receives a number of inputs. The RH door switch (C054-1) is connected to the alarm ECU (C061-5) by a slate/white wire. When the door is closed, the switch is open. In this condition, the alarm ECU (C057-5) supplies the BBUS (C666-3) with battery voltage. When the door is opened, the door switch closes, providing a short to earth. The alarm ECU responds by supplying the BBUS with a reduced voltage. Sensing this drop in voltage, the BBUS sounds.