System Description (For Canada)

The headlamp system for Canada vehicles contains 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.
Power is supplied at all times
- through 15 A fuse (No. 60, 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. 59, located in the fuse and fusible link box)
- to daytime light control unit terminal 2 and
- to lighting switch terminal 5.
With the ignition switch in the ON or START position, power is supplied
- through 7.5 A fuse [No. 11, located in the fuse block (J/B)]
- to daytime light control unit terminal 12.
With the ignition switch in the START position, power is supplied
- through 7.5 A fuse [No. 26, located in the fuse block (J/B)]
- to daytime light control unit terminal 1.
Ground is supplied to daytime light control unit terminal 9 through body grounds E13 and E41.

HEADLAMP OPERATION
Low Beam Operation
When the lighting switch is turned to the 2ND position and placed in LOW ("B") position, power is supplied
- from lighting switch terminal 7
- to RH headlamp terminal 2
- to daytime light control unit terminal 4.
Ground is supplied to RH headlamp terminal 3 through body grounds E13 and E41.
Also, when the lighting switch is turned to the 2ND position and placed in LOW ("B") position, power is supplied
- from lighting switch terminal 10
- to LH headlamp terminal 2.
Ground is supplied
- to LH headlamp terminal 3
- from daytime light control unit terminal 7
- through daytime light control unit terminal 9
- through body grounds E13 and E41.
With power and ground supplied, the low beam headlamps illuminate.

High Beam Operation/Flash-to-pass Operation
When the lighting switch is turned to the 2ND position and placed in HIGH ("A") position, power is supplied
- from lighting switch terminal 6
- to terminal 1 of RH headlamp.
When the lighting switch is turned to the 2ND position and placed in HIGH ("A") position, power is supplied
- from lighting switch terminal 9
- to daytime light control terminal 5
- to combination meter terminal 33 for the high beam indicator
- through daytime light control terminal 6
- to terminal 1 of LH headlamp.
Ground is supplied in the same manner as low beam operation.
Ground is supplied to terminal 19 of the combination meter through body grounds M4 and M77.
With power and ground supplied, the high beam headlamps and HI BEAM indicator illuminate.

DAYTIME LIGHT OPERATION
With the engine running, the lighting switch in the OFF or 1ST position and parking brake released, power is supplied
- to daytime light control unit terminal 3
- through daytime light control unit terminal 6
- to terminal 1 of LH headlamp
- through terminal 3 of LH headlamp
- to daytime light control unit terminal 7
- through daytime light control unit terminal 8
- to terminal 1 of RH headlamp.
Ground is supplied to terminal 3 of RH headlamp through body grounds E13 and E41.
Because the high beam headlamps are now wired in series, they operate at halt illumination