For Canada

System Description
The headlamp system for Canada vehicles is equipped with a daytime light control unit that activates the high beam headlamps at approximately half illumination whenever the engine is running. If the parking brake is applied before the engine is started the daytime lights will not be illuminated. The daytime lights will illuminate once the parking brake is released. Thereafter, the daytime lights will continue to operate when the parking brake is applied.

And battery saver system is controlled by the BCM.

Power is supplied at all times
- to ignition relay located in the IPDM E/R (intelligent power distribution module engine room)
- to headlamp high relay located in the IPDM E/R (intelligent power distribution module engine room)
- to headlamp low relay located in the IPDM E/R (intelligent power distribution module engine room)
- to CPU (central processing unit) in the IPDM E/R (intelligent power distribution module engine room)
- through 15 A fuse [No. 78, located in the IPDM E/R (intelligent power distribution module engine room)]
- through 10 A fuse [No. 71, located in the IPDM E/R (intelligent power distribution module engine room)]
- to combination meter terminal 43
- through 10 A fuse [No. 19, located in the IPDM E/R (intelligent power distribution module engine room)]
- to daytime light control unit terminals 2 and 3
- through 10 A fuse [No. 21, located in the fuse block (J/B)].

Power is also supplied at all times
- to BCM (body control module) terminal 55
- through 50 A fusible link [letter F, located in the fuse and fusible link block].

With the ignition switch in the ON or START position, power is supplied
- to ignition relay located in the IPDM E/R (intelligent power distribution module engine room)
- to daytime light control unit terminal 12
- through 10 A fuse [No. 82, located in the IPDM E/R (intelligent power distribution module engine room)]
- to BCM (body control module) terminal 38
- through 10 A fuse [No. 1, located in the fuse block (J/B)]
- to combination meter terminals 41 and 42
- through 10 A fuse [No. 14, located in the fuse block (J/B)].

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

With the ignition switch in the START position, power is supplied
- to daytime light control unit terminal 1
- through 10 A fuse [No. 9, located in the fuse block (J/B)].

Ground is supplied
- to daytime light control unit terminal 9
- through grounds E17 and E43
- to BCM (body control module) terminal 52
- through grounds M30 and M66
- to IPDM E/R (intelligent power distribution module engine room) terminals 38 and 60
- through grounds E17 and E43
- to combination meter terminals 45 and 46
- through grounds M30 and M66.

HEADLAMP OPERATION

Low Beam Operation
With the lighting switch in 2ND position, the BCM (body control module) receives input signal requesting the headlamps to 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) in the IPDM E/R controls the headlamp low relay coil, which when energized, directs power
- to 15 A fuse [No. 76, located in the IPDM E/R]
- through IPDM E/R terminal 20
- to headlamp RH terminal 3 and
- to 15 A fuse [No. 86, located in the IPDM E/R]
- through IPDM E/R terminal 30
- to headlamp LH terminal 3.

Ground is supplied at all times
- to headlamp RH terminal 4
- through grounds E17 and E43
- to headlamp LH terminal 4
- through grounds E17 and E43.

With power and ground supplied, low beam headlamps illuminate.

High Beam Operation (When engine stopped)/Flash-to-Pass Operation
With the lighting switch in 2ND position and placed in HIGH or PASS position, the BCM (body control module) receives input signal requesting the headlamp high beams to 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) in the IPDM E/R controls the headlamp high relay coil and daytime light relay-2 turned on, which when energized, directs power
- to 10 A fuse [No. 74, located in the IPDM E/R]
- through IPDM E/R terminal 28
- to IPDM E/R terminal 28
- through daytime light control unit terminal 5
- to daytime light control unit terminal 6
- through headlamp LH terminal 2
- to 10 A fuse [No. 72, located in the IPDM E/R]
- through IPDM E/R terminal 27
- to IPDM E/R terminal 27
- through daytime light relay-2 terminal 2 and
- through daytime light control unit terminal 1
- to 10 A fuse [No. 72, located in the IPDM E/R]
- through IPDM E/R terminal 27
- to IPDM E/R terminal 27
- through daytime light relay-2 terminal 5
- to daytime light relay-2 terminal 3
- through headlamp RH terminal 2.

Ground is supplied
- to daytime light relay-2 terminal 1
- through grounds E17 and E43
- to headlamp RH terminal 8
- through grounds E17 and E43
- to headlamp LH terminal 8
- through daytime light control unit terminal 7
- to headlamp RH terminal 4
- through grounds E17 and E43
- to headlamp LH terminal 4
- through grounds E17 and E43
- to daytime light control unit terminal 9
- through grounds E17 and E43.

When power and ground supplied, the high beam headlamps illuminate.
High beam indicator illuminates when combination meter receives input signal requesting high beam indicator to illuminate. This is communicated to BCM across the CAN communication lines.

COMBINATION SWITCH READING FUNCTION
Refer to "COMBINATION SWITCH READING FUNCTION" in Body Control Module.

EXTERIOR LAMP BATTERY SAVER CONTROL
With 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 made can be changed by the function setting of CONSULT-II.

AUTO LIGHT OPERATION
For auto light operation, refer to "System Description" in "AUTO LIGHT SYSTEM".

DAYTIME LIGHT OPERATION
With the engine running, the lighting switch in the OFF or 1ST position and parking brake released, power is supplied
- through daytime light control unit terminal 6
- to headlamp LH terminal 2
- through headlamp LH terminal 8
- to daytime light control unit terminal 7
- through daytime light control unit terminal 8
- to headlamp RH terminal 2.

Ground is supplied
- to headlamp RH terminal 8
- through grounds E17 and E43
- to daytime light control unit terminal 9
- through grounds E17 and E43.

Because the high beam headlamps are now wired in series, they operate at half illumination.

If the lighting switch is in the HIGH position, daytime light operation is canceled. On this occasion, power is supplied
- through IPDM E/R terminal 24
- to daytime light control unit terminal 1.

Daytime light control unit is canceled power suppling from terminal 8 to terminal 2 of headlamp RH (series power suppling is canceled). And then high beam is ON.

Operation:

OPERATION
After starting the engine with the lighting switch in the "OFF" or 1ST position, the headlamp high beam automatically turns on. Lighting switch operations other than the above are the same as conventional light systems.

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 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
CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle multiplex communication line with high data communication speed and excellent error detection ability. Many electronic control units are equipped onto a vehicle, and each control unit shares information and links with other control units during operation (not independent). In CAN communication, control units are connected with 2 communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring. Each control unit transmits/receives data but selectively reads required data only.

CAN Communication Unit
Refer to Information Bus.