USA
For USA (Xenon Type)System Description
The headlamp operation is controlled by the lighting switch which is built into the combination switch and smart entrance control unit. And the headlamp battery saver system is controlled by the smart entrance control unit.
OUTLINE
Power is supplied at all times
- to headlamp LH relay terminals 1 and 3
- through 15 A fuse (No. 60, located in the fuse and fusible link box), and
- to headlamp LH relay terminal 6
- through 20 A fuse (No. 32, located in fuse and fusible link box), and
- to headlamp RH relay terminals 1 and 3
- through 15 A fuse (No. 59, located in the fuse and fusible link box), and
- to headlamp RH relay terminal 6
- through 20 A fuse (No. 31, located in fuse and fusible link box), and
- to smart entrance control unit terminal 49
- through 7.5 A fuse [No. 24, located in the fuse block (J/B)].
When the ignition switch is in the ON or START position, power is supplied
- to smart entrance control unit terminal 27
- through 7.5 A fuse [No. 11, located in the fuse block (J/B)].
When the ignition switch is in the ACC or ON position, power is supplied
- to smart entrance control unit terminal 26
- through 10 A fuse [No. 10, located in the fuse block (J/B)]
Ground is supplied
- to smart entrance control unit terminals 43 and 64
- through body grounds M77 and M111.
POWER SUPPLY TO LOW BEAM AND HIGH BEAM
When lighting switch is in 2ND or PASS position, ground is supplied
- to headlamp relay (LH and RH) terminal 2 from smart entrance control unit terminals 21 and 59
- through smart entrance control unit terminals 22 and 60,
- from lighting switch terminal 12
Headlamp relays (LH and RH) are energized and then power is supplied to headlamps (LH and RH).
LOW BEAM OPERATION
When the lighting switch is turned to the 2ND position and placed in LOW ("B") position, power is supplied
- from terminal 7 of each headlamp relay
- to terminal 3 of each headlamp
Ground is supplied
- to headlamp LH terminal 4
- through body grounds E13 and E41, and
- to headlamp RH terminal 4
- through body grounds E13 and E41.
With power and ground supplied, the headlamp(s) will illuminate.
HIGH BEAM OPERATION/FLASH-TO-PASS OPERATION
When the lighting switch is turned to the 2ND position and placed in HIGH ("A") position or PASS ("C") position, power is supplied
- from terminal 5 of each headlamp relay
- to terminal 1 of each headlamp, and
- to combination meter terminal 26 for the HIGH BEAM indicator.
Ground is supplied
- to headlamp LH terminal 2, and
- to combination meter terminal 27 for the HIGH BEAM indicator
- through lighting switch terminals 6 and 5
- through body grounds E13 and E41, and
- to headlamp RH terminal 2
- through lighting switch terminals 9 and 8
- through body grounds E13 and E41.
With power and ground supplied, the high beams and the high beam indicator illuminate.
EXTERIOR LAMP BATTERY SAVER CONTROL
Except for Auto Light Control Operation
Headlamps will remain on for a short while after the ignition switch is turned from ON (or ACC) to OFF. Continuity between terminals 21 and 22, and between terminals 59 and 60 of smart entrance control unit will be disturbed after 5 minutes, then the headlamps will be turned off.
When the lighting switch is turned from OFF to 2ND after headlamps are turned to off by the exterior lamp battery saver control, ground is supplied
- to smart entrance control unit terminals 20 and 58 from lighting switch terminal 11, and then,
- to headlamp LH and RH relays terminal 2 from smart entrance control unit terminals 21 and 59,
- through smart entrance control unit terminals 22 and 60 and
- through lighting switch terminal 12.
Then headlamps illuminate again.
Auto light control operation
While the headlamps are turned ON by "AUTO" operation, the exterior lamp battery saver is activated for 5 minutes when the ignition switch is turned from ON (or ACC) to OFF, and either LH or RH front door switch is opened.
The smart entrance control unit controls exterior lamp battery saver activation as follows:
- When the door switch signal changes from ON to OFF while the exterior lamp battery saver is activated, the operation is discontinued, and restarts and lasts for 45 seconds, then the headlamps will be turned off.
- When the door switch signal changes from OFF to ON while the exterior lamp battery saver is activated, the operation discontinued, restarts and lasts for 45 seconds, then the headlamps will be turned off.
- When the one of four door switch signals changes from OFF to ON while the exterior lamp battery saver is activated, the operation is discontinued, restarts and lasts for 5 minutes, then the headlamps will be turned off.
- When all the door switch ON signals are input while the exterior lamp battery saver is activated, the saver is discontinued and restarts and lasts for 45 seconds, then the headlamps will be turned off.
Exterior battery saver control time can be changed using "WORK SUPPORT" mode in "HEADLAMP".
When the lighting switch is turned from OFF to 2ND after headlamps are turned to off by the exterior lamp battery saver control, ground is supplied
- to smart entrance control unit terminals 20 and 58 from lighting switch terminal 11, and then,
- to headlamp LH and RH relays terminal 2 from smart entrance control unit terminals 21 and 59,
- through smart entrance control unit terminals 22 and 60 and
- through lighting switch terminal 12.
Then headlamps illuminate again.
AUTO LIGHT OPERATION
The auto light control system has an auto light sensor inside instrument mask that detects outside brightness.
- to smart entrance control unit terminal 23
- from lighting switch terminal 42.
When ignition switch is turned to "ON" or "START" position and
- Outside brightness is darker than prescribed level.
After 3 seconds delay, outside brightness becomes darker than prescribed level.
Ground is supplied
- to headlamp relay LH and RH terminals 2
- through smart entrance control unit terminals 21, 59 and 43, 64.
Then both headlamp relays and tail lamp relay are energized, headlamps (low or high) and tail lamps are illuminated according to switch position.
Auto light operation allows headlamps and tail lamps to go off when
- Outside brightness is brighter than prescribed level, or
- After 5 seconds delay, outside brightness is brighter than prescribed level.
- Ignition switch is turned to "OFF" position. (Headlamp will be turned OFF by exterior lamp battery saver control system.)
NOTE: The delay time changes (maximum of 20 seconds) as the outside brightness changes.
For parking license and tail lamp auto operation, refer to "PARKING, LICENSE AND TAIL LAMPS".
VEHICLE SECURITY SYSTEM
The vehicle security system will flash the high beams if the system is triggered. Refer to "VEHICLE SECURITY (THEFT WARNING) SYSTEM".
XENON HEADLAMP
Xenon type headlamp is adopted to the low beam headlamps. Xenon bulbs do not use a filament. Instead, they produce light when a high voltage current is passed between two tungsten electrodes through a mixture of xenon (an inert gas) and certain other metal halides. In addition to added lighting power, electronic control of the power supply gives the headlamps stable quality and tone color.
Following are some of the many advantage of the xenon type headlamp.
- The light produced by the headlamps is white color approximating sunlight that is easy on the eyes.
- Light output is nearly double that of halogen headlamps, affording increased area of illumination.
- The light features a high relative spectral distribution at wavelengths to the human eye is most sensitive, which means that even in the rain, more light is reflected back from the road surface toward the vehicle, for added visibility.
- Power consumption is approximately 25 percent less than halogen headlamps, reducing battery load.