Chapter 36 POWERPOINT

Use the textbook to define these Technical Terms:

1. analog instruments

2. automatic headlight dimmer system

3. body control area network (B-CAN)

4. daylight running lights

5. digital instruments

6. fast control area network (F-CAN)

7. filament

8. flasher

9. headlight aimers

10. heads-up display (HUD)

11. high-intensity discharge bulbs (HIDs)

12. instrument cluster

13. wiper linkage

Use the textbook to answer these discussion questions:

1. Explain how to aim headlights.

Read the chapter summary below:

Summary

■ The headlamp system generally includes the battery, headlamp-related wiring, fuse panel, light switch, dimmer switch, headlamps, taillights, marker lights, and instrument lights.

■ A multifunction switch is capable of controlling sev- eral circuits—headlights (bright and dim circuits) and turn lights, for example—simultaneously.

■ Most late-model cars use halogen headlamp bulb inserts, which are small bulbs that fit into a larger plastic housing.

■ A dimmer switch controls the high and low head- lamp beam function.

■ An automatic headlight dimmer system uses a light sensor, amplifier, and relay to control the high and low beams.

■ The turn signal system consists of a fuse, turn light switch, flasher unit, turn lightbulbs, indicator bulbs, and related wiring.

■ Light system service involves changing burned- out bulbs, testing bulb sockets, checking fuses, finding shorted and open circuits, aiming head- lights, and other similar types of tasks.

■ Aiming headlights involves adjusting the beams so they shine in the proper direction.

■ Instrumentation is used to inform the driver of various operating conditions—oil pressure, engine temperature, computer trouble codes, air bag system armed, etc.

■ Analog instruments use rotating needles on dials to indicate operating conditions.