ATASA 5 TH Study Guide Chapter 20 Pages 596 622 43 Points Please Read The Summary
1. The lighting system provides power to both the and lights. Front & Rear Interior & Exterior Manual & Automatic
2. A or bulb generates light as current flow through the filament. Lamp Camp Stamp
3. The glass envelope around the filament is evacuated to the filament burns in a. Fluid Pressure Vacuum
4. Lamps can be or filament and can vary in their wattage rating. Triple or Dual Single or Married Single or Double
5. Sealed beam headlights are airtight & normally filled with gas. They consist of a filament, concave reflector and lens. Carbon Argon Neon
6. A sealed beam headlight is commonly filled with iodine gas. It can withstand higher temperatures and burn brighter than those filled with argon. Halogen Argon Iodine
7. Headlights with a replaceable bulb are called headlights. Deposit Composite Aerodynamic
8. Bulb life can be shortened if you touch the bulb s envelope with your.
9. (HID) have a blue white color, close to daylight, and make their light by arcing electricity between 2 electrodes that excite xenon gas. (15,000 volts!) High Identity Demand High Intensity Discharge Highly Intense Dominoes
10. Xenon headlights produce as much light, use 2/3 less power, and last 2 to 3 times as long as regular halogen headlights. Initial cost is higher. Uno Twice Thrice
11. Bi Xenon systems have HID for low & high beam and a halogen for. Flash to Pass Flash to Warn Flash to Flash
12. LED lights use (semi conductors) as their source of light. Light Amplifying Diodes Light Demanding Diodes Light Emitting Diodes
13. The switch is a multi function switch for headlights, parking lights, fog lights, and in some cases, contains a rheostat to control instrument panel/cluster brightness. Headlight Stoplight
14. The switch is used to switch from bright to dim, operate the flash to pass feature and in some cases, functions as the turn signal switch. Dimmer Simmer Trimmer
15. (DRL) operate the headlights at a reduced voltage anytime the vehicle is running in daylight. Applying the parking brake turns the DRLs off. Daytime Running Lights
Huge Safety Note The parking lights in front & the running lights in the rear are not on if the DRL s are on!! Daytime Running Lights
16. Automatic lights use a sensor that determines the ambient light level & automatically turns on the headlight system if surrounding light is too dim. (dusk, in a tunnel, cloudy, etc.)
Huge Safety Note: Parking lights (front) & running lights (rear) are not on if DRLs are on!! So the best advice is to Turn on Your Headlights Whenever you drive!
17. A headlight system keeps the lights on for some period of time after ignition is shut off. Decay Relay Delay
18. High Beam systems turn on the high beam lights for better visibility when no vehicles are sensed in front of or behind the car. Light sensors called cameras are used to detect. Detection Reaction Rejection
19. headlights aim in the direction that the vehicle is turning. Adaptive Reactive Proactive
The back up light switch may be part of the park/neutral switch.
20. lights, that are aimed under the fog, and driving lights are considered auxiliary lights. Frog Fog Grog
21. Headlights can be or adjusted to provide the proper nighttime view of the road. Some vehicles with xenon lamps have an auto leveling feature that functions with the suspension. Aimed Pointed Sighted
22. When replacing bulbs, check the rating (wattage) to ensure the exact replacement. Amps Watts Volts
23. Lighting can be either side switched or side switched. (check schematics) Power or Ground Inside or Outside Automatic or Manual
24. lights include: engine compartment, glove box, luggage compartment, vanity, dome or map, courtesy, and illuminated entry of the lock cylinder & puddle lamps under the mirror. Interior Exterior Mood
25. Rear lighting includes:,, back up/reverse, parking lights &. Turn, Stop, Hazard Brake, Parking, Side Marker Stop, Yield, Go
Flash to pass illuminates high beams with a pull of the dimmer switch.
Interior light options include illuminated entry & delayed shut off.
Multi Function switches control more than one circuit.
26. are circuit breaking components of the turn signal & hazard warning systems. Dasher Flasher Thrasher
27. Flashers operate (cycle on & off) with the in the system & can blink too fast or too slow. Current Voltage Resistance
28. If additional bulbs are used, like with a trailer attached, a flasher is needed. More bulbs lower the parallel resistance causing the flasher to cycle so fast, it seems constantly on. Low Duty Medium Duty Heavy Duty
29. If a bulb is burned out, the flasher will cycle. Faster Slower Not At All
30. Brake lights are controlled by the switch, usually located on the pedal bracket. Stoplight Red light Green light
31. The brake lights also have a (CHMSL) Center High Mount Stop Lamp Center High Mount Slip Lamp Center High Mount Slime Lamp
32. LEDs used as rear lighting offer the advantage of full brightness in millisecond vs. 200 msec. 1 msec 10 msec 100 msec
33. Adaptive brake lights increase their intensity or surface area when intervention is on. SIR/SRS ATC ABS
34. lights are clear, rear lights that turn on when the transmission is placed in reverse. They are controlled by a transmission mounted back up light switch or transmission range switch. Back up Get up Stand up
35. Simple bulb is often the answer to a lamp out situation. Rebuilding Replacement Remanufacturing
36. Loose or corroded & connectors can cause lights out, intermittent operation, low intensity & flickering. Remember: Resistance up = Amps down Sockets Lockets Pockets
38. Shorts to ground in wiring, connectors, or in a bulb will increase current flow & blow a. Gasket Fuse Blood Vessel
39. High resistance due to corrosion will reduce flow and the intensity of the bulb. This can occur in either the hot side or the ground side of the circuit. Diagnose with voltage drop tests. Wattage Voltage Current