For Canada

The headlamp system on vehicles for Canada contains a daytime light unit. The unit 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. After that, the daytime lights will continue to operate even when the parking brake is applied.
Power is supplied at all times
^ through 15 A fuse (No. (53) located in the fuse and fusible link box)
^ to daytime light control unit terminal (3) and
^ to lighting switch terminal (8).
Power is also supplied at all times
^ through 15 A fuse (No. (54) ,located in the fuse and fusible link box)
^ to daytime light control unit terminal (2),
^ to lighting switch terminal (5) and
With the ignition switch in the ON or START position, power is supplied
^ through 7.5 A fuse [No. (12) ,located in the fuse block (J/B)]
^ to daytime light control unit terminal (12).
Ground is supplied to daytime light control unit terminal (5) through body grounds (M13) and (M73).

HEADLAMP OPERATION
Low beam operation
When the lighting switch is moved to the 2ND and LOW ("B") position, power is supplied
^ from lighting switch terminal (10)
^ to LH headlamp terminal (2).
Ground is supplied to LH headlamp terminal (3) through body grounds (E5) and (E30).
Also, when the lighting switch is moved to the 2ND and LOW ("B") position, power is supplied
^ from lighting switch terminal (7)
^ to RH headlamp terminal (2).
Ground is supplied to headlamp terminal (3) through body grounds (E5) and (E30) (through daytime light control unit).
With power and ground supplied, the low beam headlamps illuminate.

High beam operation
When the lighting switch is moved to the 2ND and HIGH ("A") or PASS ("C") position, power is supplied
^ from lighting switch terminal (9)
^ to LH headlamp terminal (1).
Also, when the lighting switch is moved to the 2ND and HIGH ("A") or PASS ("C") position, power is supplied
^ from lighting switch terminal (9)
^ to daytime light control unit terminal (8)
^ through daytime light control unit terminal (6)
^ to RH headlamp terminal (1).
Ground is supplied in the same manner as low beam operation.
With power and ground supplied, the high beam headlamps illuminate.