Battery Cable: Description and Operation

Battery and Cables

COMPONENT LOCATION

Battery and Cables:

INTRODUCTION
Electrical power from the battery and generator is distributed throughout the vehicle through a series of junction boxes.

IGNITION MODES
The vehicle has a possible 4 ignition modes. The modes and systems that are active in each mode are detailed in the following table.







BATTERY







The battery is located behind a cover at the front of the luggage compartment. The cover is held in place by 4 retainers. The battery sits in a tray and is secured with a clamp plate and 2 nuts.

The positive and negative battery cables are fitted with Service loops. The Service loops add extra length to the cables and allow the battery to be slid rearward in the luggage compartment without disconnection.

Remote Jump Start Terminal
The positive battery cable is also connected to a remote jump start terminal. The remote jump start terminal is located in the Left-Hand (LH) rear corner of the luggage compartment and can be accessed by removing the air vent trim. Although also fitted to coupe vehicles, the terminal has been specifically designed to allow a convertible vehicle to be jump started if a drained battery is experienced when the top is in the stowed condition.

The starter motor power lead is also connected to the remote jump start terminal and is insulated from the battery jump start cable and the vehicle body by a nylon washer.

The negative jump start connection is a stud located in the spare wheel well. For more information on jump start procedure, refer to the Owners Handbook.

Transit Relay
The vehicle is also fitted with a transit relay. This is a disposable device and not for use by the customer. This relay is fitted in series with the battery and ground. It disconnects the battery from the vehicles ground and thus eliminates quiescent current drain during delivery. The relay must be removed before delivery to the customer.

BATTERY JUNCTION BOX (BJB)







Mounted on the LH side of the battery is the BJB. The BJB contains 3 mega fuses delivering battery power to; the starter motor (400A); the auxiliary junction box (175A) and the CJB (175A).

AUXILIARY JUNCTION BOX







The auxiliary junction box is mounted on the passenger compartment rear bulkhead and secured by 2 nuts/studs. The junction box can be accessed by opening the center panel of the rear seat back. The center panel is secured in position by a single stud at the top, and hinged at the bottom.

The auxiliary junction box receives electrical power from the BJB via a 175A mega fuse.

CENTRAL JUNCTION BOX (CJB)







The CJB is mounted at the base of the LH A pillar and secured by 2 nuts/studs. Access to the CJB can be gained through a removable panel located below the LH side of the instrument panel.

The CJB receives electrical power from the BJB via a 175A mega fuse. A second power supply lead 'daisy chains' off the CJB, providing electrical power to the power distribution box. For more information on the circuits and systems served by the CJB, refer to the Electrical Guide.

The CJB also controls the functionality of a number of vehicle systems. These include:
- Electric steering column lock.
- Instrument cluster and panel illumination.
- Exterior lighting systems.
- Interior lighting systems.
- Active anti-theft alarm system.
- Passive anti-theft alarm system.
- Passive start.
- Electric seats.
- Electric windows.
- Wipers and washers.

POWER DISTRIBUTION BOX







The power distribution box is located in the LH rear of the engine compartment, beneath a closing panel. The power distribution box is supplied electrical power from the BJB, via the CJB. For more information on the circuits and systems served by the power distribution box, refer to the Electrical Guide.