Interior Lighting: Other Jaguar XF I

CONTROL DIAGRAM

Control Diagram (Sheet 1 Of 2)

Control Diagram (Sheet 2 Of 2)

JUNCTION BOXES

Inputs

The central junction box (CJB) receives the following inputs which affect the operation of the interior lamps

1. Ignition mode
2. Lock/unlock
3. Luggage compartment lid latch switch
4. Door latch switches.

Outputs

The rear junction box (RJB) outputs the following for the interior lighting system

1. Luggage compartment lamp power supply
2. Driver and passenger door module power supplies
3. Fade on and off grounds for front and rear overhead console interior lamps and footwell lamps
4. Pulse width modulation (PWM) power output for the ambience lighting.

Interior Lamp Time-Out

The interior lamps are controlled by a timer within the central junction box (CJB) which allows a 60 second delay period for the lamps to remain active after the ignition mode has been changed to off power mode 0 or the vehicle has been unlocked. The interior lamp fade off is controlled by the rear junction box (RJB)via a delayed power off relay in the central junction box (CJB). The following interior lamps are subject to the delay period

1. Front overhead console interior lamp
2. Rear interior lamps
3. Footwell lamps
4. Door mirror approach lamps.

The timer delay is activated when the central junction box (CJB) receives one of the following signals

1. An unlock signal from the Smart Key via the keyless vehicle module.
2. Ignition mode is changed from the crank power mode 9 or ignition power mode 6 to the accessory power mode 4 to the off power mode 0.

If a second occurrence of the above actions occurs within the timer period, the timer will be rest and the delay period timer will restart.

The timer delay is deactivated when the central junction box (CJB) receives one of the following signals

1. A lock signal from the Smart Key via the keyless vehicle module
2. Ignition mode is changed from the off power mode 0 to the accessory power mode 4 or ignition power mode 6
3. The central junction box (CJB) receives a door opened signal (even if that door is subsequently closed).

Battery Saver

The battery saver provides an automatic shut-off of the interior lamps after a period of 15 minutes in order to prevent excessive power drain on the battery.

When the ignition mode is changed from the ignition power mode 6 or accessory power mode 4 to the off power mode 0, the central junction box (CJB) starts a timer which de-energizes a delayed power off relay in the central junction box (CJB), removing the power supply to the interior lamps after a period of 15 minutes, switching off all or any interior lamps which have remained on for any reason.

Once the timer has expired and the lamps are off, any one of the following will 'wake up' the battery saver and the interior lamps will function again. The timer will be restarted as soon as an input is received by the central junction box (CJB) from one of the following

1. Ignition mode changed from off power mode 0 to accessory power mode 4, ignition power mode 6 or crank power mode 9.
2. Any door, including the luggage compartment lid is opened
3. An unlock request is received from the Smart Key via the keyless vehicle module
4. Overhead console interior lamp is switched on via the JaguarSense function.

INTERIOR LAMPS

When the interior lighting system switches the interior lamps on, the central junction box (CJB) ramps the lamps up to full power over a period of 1.3 seconds. When the system switches the lamps off, after the time-out period has expired, the central junction box (CJB) fades the lamps off over a period of 2.6 seconds.

The interior lighting system will illuminate the interior lamps when one of the following events occurs

1. The central junction box (CJB) receives an unlock signal from the Smart Key via the keyless vehicle module
2. Any door is opened including the luggage compartment lid
3. The ignition mode is changed from ignition power mode 6 or accessory power mode 4 to off power mode 0.

The interior lighting system will turn off the interior lamps when one of the following events occurs

1. Once the time-out timer delay has expired since the lamps were either activated or the last door is closed and the vehicle is not locked
2. The ignition is in off power mode 0 and an external lock is requested (using either the door lock buttons or the Smart Key) with all doors closed
3. The ignition mode is changed from the off power mode 0 or the accessory power mode 4 to the ignition power mode 6
4. The last door is closed and the vehicle is externally locked, on receipt of an unlock request from the Smart Key or door handle operation detected when the time-out timer is still active.

DELIVERY MODE

Delivery mode is set at the factory on vehicles to minimize battery drain. The mode enables the switching off of non-critical electrical components, including the interior lighting system. The delivery mode feature is cancelled by the dealer during the Pre-Delivery Inspection using an approved Jaguar diagnostic system.

CRASH ILLUMINATION

When a crash signal is received from the restraints control module (RCM), the central junction box (CJB) activates the interior lamps once the vehicle speed has reduced to 5 km/h (3.1 mph). The hazard flashers are also activated and the doors are prevented from being locked. The lamps remain on until the crash signal is removed, they cannot be switched off using the JaguarSense feature. The crash signal is removed by completing one ignition on and off cycle.

INTERIOR BULB TYPE/RATING

The following table shows the bulbs used for the interior lighting system and their type and specification.

Note. The front overhead console and the front door ambience lighting is illuminated by light emitting diode (LED)'s and are non-serviceable components.

The central junction box (CJB) is an integrated unit located on the right-hand (RH) 'A' pillar, below the instrument panel. The central junction box (CJB) contains fuses, relays and number of microprocessors which control the power supply and functionality of the interior lighting system and other vehicle systems.

The rear junction box (RJB) is located on the right-hand (RH) side of the luggage compartment. The rear junction box (RJB) contains fuses, relays and microprocessors which in conjunction with the central junction box (CJB) control the interior lighting system and other vehicle systems.

Circuit Protection

The central junction box (CJB) and the rear junction box (RJB) provide circuit protection for all interior lamp circuits. The lamps are protected by fuses in the central junction box (CJB) and the rear junction box (RJB).

FRONT OVERHEAD CONSOLE

The overhead console is located near the windshield in the head lining. The console can be removed by carefully levering out the rear edge of the housing to release 2 spring clips, and then pulling the console rearwards to release 2 locating tabs. Removal of the console is required to replace any of the interior or map reading lamp bulbs.

The interior lamps and air bag off warning lamp in the front overhead console are common to all vehicles. The overhead console can also contain security system intrusion detection module and volumetric sensors, sunroof switch and a voice activation microphone depending on vehicle specification and market.

The interior lamp can operated manually using the JaguarSense feature to switch the lamp on and off. The lamp is also controlled as part of the automatic interior lighting system.

The map reading lamps only operate manually using the JaguarSense feature to activate the lamps.

The interior and map reading lamp bulbs are located in holders which locate in a PCB. The PCB also provides for the operation of the ambience lighting light emitting diode (LED)'s, the air bag off warning lamp and the JaguarSense proximity sensors which are integral with the PCB.

The overhead console also contains 2 light emitting diode (LED)'s for the ambience lighting system. The ambience lighting is part of the lighting control switch functionality and is subject to the setting of the instrument panel illumination dimmer control in the auxiliary lighting switch. The ambience lighting provides very limited illumination of the instrument panel and floor console when the vehicle is being driven without affecting the driver's visibility.

REAR OVERHEAD CONSOLE

The rear overhead console is located in the head lining, at the rear of the vehicle. The console can be removed by carefully levering the lamp lens from the body. This releases 2 tabs which are integral with the lens allowing the body to removed from the aperture in the head lining.

the lamp comprises the lamp body and lens and 2 separate lamps with 2 switches to operate each lamp individually.

The rear interior lamps can operated manually using the 2 switches located on the lamp body. The lamp is also controlled as part of the automatic interior lighting system.

The bulbs are located in bulb holders which locate in a PCB connected to each switch. Removal of the rear overhead console is required to replace the bulbs.

GLOVEBOX LAMP

The glovebox lamp is located in the top of the glovebox housing in the instrument panel. The lamp is located in a cover on the outside, upper surface of the housing and projects the light into the top of the glovebox.

The lamp is operated by a switch located at the rear of the glovebox housing. The switch protrudes into the housing and is operated by the rear face of the glovebox lid tray when the glovebox is opened or closed.

The bulb is located in a holder which is fitted into the side of the glovebox lamp cover. Replacement of the bulb requires the removal of the glovebox housing.

The glovebox lamp is active at all times when the interior lamps are active and will illuminate only when the glovebox is opened.

FOOTWELL LAMPS

The footwell lamps are located under the instrument panel. Each lamp comprises a bulb and holder which is part of the instrument panel wiring harness. The bulb and holder is located in a hole in the front footwell air ducts. The footwell lamps are active at all times when the interior lamps are active.

LUGGAGE COMPARTMENT LAMP

The luggage compartment lamp is located in the luggage compartment trim, in a central position below the rear screen. The lamp comprises a molded lens and housing and two electrical contacts which locate the bulb.

The lamp is accessible be removed by levering one end from the trim panel to gain access to the bulb. The lamp is active at all times when the interior lamps are active.

VANITY MIRROR LAMPS

Four vanity mirror lamps are fitted, two in each vanity mirror. The lamps are illuminated when the mirror cover is raised. The vanity mirror lamps operate at all times when the interior lamps are active.

The vanity mirrors use low voltage, 1.2W festoon type bulbs.

DOOR MIRROR APPROACH LAMPS

A door mirror approach lamp is located on the underside of each exterior door mirror.

The approach lamps are active at all times when the interior lamps are active.