CHARGING AND STARTING – Td4 ............................................................... 4

EARTH POINTS AND HEADERS

General

The following illustration indicates the general position of each earth point and header on the vehicle. Refer to the Connector section for more information.

Refer to the Circuit Diagrams for details of electrical components and their associated earth points.

01 MY

02 MY

DESCRIPTION AND OPERATION

ANTI-THEFT ALARM AND CENTRAL DOOR LOCKING (CDL)

DESCRIPTION General

The anti-theft alarm system is controlled by the Central Control Unit (CCU), which is mounted on the rear of the passenger compartment fuse box. The alarm can be armed and disarmed using the vehicle key or remote handset. The two main features of the alarm system are: Perimetric protection. Volumetric protection.

Perimetric Protection

Perimetric protection secures against intrusion through the bonnet, doors, tail door or roof. The CCU monitors the state of the hinged panels after the alarm system has been armed. If a panel is opened after the alarm has been armed, the alarm will be triggered.

Switches are incorporated into the door latch assemblies, the bonnet, and the tail door. Three door vehicles also have a 'roof on' switch, to inform the CCU if the hard back has been removed, or the soft back is opened.

Perimetric protection is initiated after a valid alarm request is received. If any panel is open when perimetric protection is activated (other than the roof), the alarm will enter a partially armed state.

Volumetric Protection

Volumetric protection provides protection for the vehicle interior. A volumetric sensor monitors the vehicle interior space and activates the alarm if unauthorised movement is detected. The volumetric sensor is located in a central position, behind the headlining.

A fifteen second delay is initiated after the alarm has been armed before signals from the volumetric sensor are interpreted as an intrusion. This precaution is included in the CCU software to avoid accidental or nuisance triggering of the alarm.

For a detailed description of the anti-theft alarm system, refer to the Security section of the System Description and Operation Workshop manual.

OPERATION General

Feed from the positive battery terminal (C0192) is supplied to the horn relay, fuse 6, fuse 7, fuse 10, and fusible link 4 (C0632) on an R wire. All are located in the engine compartment fuse box. Fuse 10 (C0575) provides a constant battery feed to the inertia switch (C0123) on a G wire. Fuse 7 (C0576) provides a constant battery feed to the hazard warning relay located in the passenger compartment fuse box (C0581) on an NO wire.

Fusible link 4 (C0574) provides a constant battery feed to the CCU (C0593) and fuse 14 of the passenger compartment fuse box (C0581) on an NW wire. Fuse 14 (C0589) provides a feed to the alarm LED located in the instrument pack (C0230) and the transponder coil mounted around the ignition barrel (C0049) on P wires. Fuse 14 (C0583) also provides a feed to the diagnostic socket (C0040) and the roof on switch (3 door vehicles only) (C0497) on P wires.

Door Switches

In order for the perimetric alarm system to operate, the CCU monitors the condition of the door switches (including the tail door switch). The door switches are open circuit when the doors are closed. When the doors are opened, the switches close and an earth path is created. The CCU (C0428) is connected to the door switches as follows: To the driver door switch (C0441) on a PS then PW wire. To the passenger door switch (C0441) on a PW wire. To the LH rear door switch (C0442) on a PW wire. To the RH rear door switch (C0442) on a PW wire. To the tail door switch (C0616) on a BO wire. NOTE: Both front and both rear door switches have the same connector number as they utilise the same harness.

The CCU treats the passenger door, and both rear doors as a single item. All door switches are earthed on B wires.

Bonnet Switch

In addition to the door switches, the CCU also monitors the condition of the bonnet switch. The bonnet switch is a normally open switch. When the bonnet is opened, the switch closes and an earth path is created.

The CCU (C0428) provides a feed to the bonnet switch (C0007) on an RP wire. The switch (C0007) is earthed on a B wire. By monitoring the state of the bonnet switch, the CCU can determine if the bonnet has been opened illegally and sound the alarm if necessary.