For USA

System Description
Control of the headlamp system operation is dependent upon the position of the combination switch (lighting switch). When the lighting switch is placed in the 2ND position, the BCM (body control module) receives input signal requesting the headlamps (and tail lamps) illuminate. This input signal is communicated to the IPDM E/ R (intelligent power distribution module engine room) across the CAN communication lines. The CPU (central processing unit) of the IPDM E/R controls the headlamp high and headlamp low relay coils. These relays, when energized, direct power to the respective headlamps, which then illuminate.
If voltage is applied to a high beam solenoid, the bulb shade will move and a high beam and a low beam are changed.

OUTLINE

Power is supplied at all times
- to headlamp high relay, located in the IPDM E/R, and
- to headlamp low relay, located in the IPDM E/R, and
- to ignition relay, located in the IPDM E/R, and
- through 15 A fuse (No. 34, located in the IPDM E/R)
- to the CPU in the IPDM E/R, and
- through 50 A fusible link (letter f, located in the fuse and fusible link box)
- to BCM terminal 55, and
- through 10 A fuse [No. 21, located in the fuse block (J/B)]
- to BCM terminal 42, and
- through 10 A fuse [No. 19, located in the fuse block (J/B)]
- to combination meter terminal 24.

With the ignition switch in the ON or START position, power is supplied
- to ignition relay, located in the IPDM E/R, and
- through 10 A fuse [No. 1, located in the fuse block (J/B)]
- to BCM terminal 38, and
- through 10 A fuse [No. 14, located in the fuse block (J/B)]
- to combination meter terminal 23.

With the ignition switch in the ACC or ON position, power is supplied
- through 10 A fuse [No. 6, located in the fuse block (J/B)]
- to BCM terminal 11

Ground is supplied
- to BCM terminal 52
- to combination meter terminals 10, 11 and 12
- through grounds M57, M61 and M79, and l to IPDM E/R terminals 38 and 60
- through grounds E15 and E24.

Low Beam Operation
With the lighting switch in 2ND position, the BCM receives input signal requesting the headlamps to illuminate. This input signal is communicated to the IPDM E/R across the CAN communication lines. The CPU in the IPDM E/R controls the headlamp low relay coil, which when energized, directs power
- through 15 A fuse (No. 36, located in the IPDM E/R)
- to IPDM E/R terminal 20
- to headlamp RH terminal 3, and
- through 15 A fuse (No. 45, located in the IPDM E/R)
- to IPDM E/R terminal 30
- to headlamp LH terminal 3.

Ground is supplied
- to headlamp LH and RH terminal 4
- through grounds E15 and E24.

With power and ground supplied, low beam headlamps illuminate.

High Beam Operation/Flash-to-Pass Operation
With the lighting switch in 2ND position and placed in HIGH or PASS position, the BCM receives input signal requesting the headlamp high beams to illuminate. This input signal is communicated to the IPDM E/R across the CAN communication lines. The CPU in the IPDM E/R controls the headlamp high relay coil and low relay coil, which when energized, directs power
- through 15 A fuse (No. 36, located in the IPDM E/R)
- to IPDM E/R terminal 20
- to headlamp RH terminal 3, and
- through 15 A fuse (No. 45, located in the IPDM E/R)
- to IPDM E/R terminal 30
- to headlamp LH terminal 3, and
- through 10 A fuse (No. 40, located in the IPDM E/R)
- to IPDM E/R terminal 27
- to headlamp RH terminal 7, and
- through 10 A fuse (No. 38, located in the IPDM E/R)
- to IPDM E/R terminal 28
- to headlamp LH terminal 7.

Ground is supplied
- to headlamp LH and RH terminals 4 and 8
- through grounds E15 and E24.

With power and ground supplied, the high beam headlamps illuminate.
If voltage is applied to a high beam solenoid, the bulb shade will move and a high beam and a low beam are changed.

The unified meter and A/C amp that received the high beam request signal by BCM across the CAN communication makes a high beam indicator lamp turn on in combination meter.

COMBINATION SWITCH READING FUNCTION
Refer to "Combination Switch Reading Function".

EXTERIOR LAMP BATTERY SAVER CONTROL
When the combination switch (lighting switch) is in the 2ND position (ON) and the ignition switch is turned from ON or ACC to OFF, the battery saver control function is activated.
Under this condition, the headlamps remain illuminated for 5 minutes, then the headlamps are turned off. Exterior lamp battery saver control mode can be changed by the function setting of CONSULT-II.

AUTO LIGHT OPERATION
Refer to "System Description" in AUTO LIGHT SYSTEM.

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 (IF EQUIPPED)
Xenon type headlamp is adopted to the low and high 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 advantages of the xenon type headlamp.
- The light produced by the headlamps is a white color comparable to 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 which the human eye is most sensitive. This 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.

CAN Communication System Description
Refer to "INFORMATION BUS".