Interior Lighting System - Except Electric: Overview Ford Focus III

Overview

The interior lighting system consists of

1. Courtesy lamps
2. Demand lamps
3. Ambient lighting (if equipped)

The courtesy lamps subsystem consists of

1. Interior lamps (roof mounted and front footwells)
2. Puddle lamps
3. Door ajar switches (integrated into the door latches)
4. Courtesy lamp switch (integrated into the front interior lamp)
5. DDM
6. PDM
7. BCM

The courtesy lamps provide illumination to the interior of the vehicle (and below the exterior mirrors if equipped with puddle lamps) when entering or exiting the vehicle or when requested using the courtesy lamp switch located on the front/driver interior lamp.

The demand lamps subsystem consists of

1. Interior lamps (map lamps)
2. Vanity mirror lamps
3. Luggage compartment lamp
4. BCM

The demand lamps provide illumination to specific areas within the vehicle when needed.

The BCM energizes the interior light relay to supply voltage to the demand lamps when the battery saver feature is not active.

The ambient lighting subsystem consists of

1. Ambient lighting Light Emitting Diodes (LEDs)
2. Ambient lighting module (integrated into the overhead console)
3. Ambient lighting switches (integrated into the overhead console)

The ambient lighting provides aesthetically colored illumination to the center console cup holders, the door map pockets, the overhead console, the door release handles, and the front footwells for illuminated entry or when the ignition is in RUN with the parking lamps on. The ambient lighting is controlled using the buttons and knob on the overhead console.

Scheme 1

Normal Operation and Fault Conditions

Refer to: Interior Lighting - System Operation and Component Description .

Refer to: Interior Lighting - System Operation and Component Description .

Refer to: Interior Lighting - System Operation and Component Description .

Refer to: Interior Lighting - System Operation and Component Description .

Refer to: Interior Lighting - System Operation and Component Description .

Refer to: Interior Lighting - System Operation and Component Description .

Refer to: Interior Lighting - System Operation and Component Description .

Refer to: Interior Lighting - System Operation and Component Description .

Refer to: Interior Lighting - System Operation and Component Description .

Refer to: Interior Lighting - System Operation and Component Description .