Headlamp (For Canada) - Daytime Light System
HEADLAMP (FOR CANADA) - DAYTIME LIGHT SYSTEMSystem 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 headlamp battery saver control unit and BCM.
Power is supplied at all times
- to headlamp relay-1 terminal 3
- through 20 A fuse [No. 57, located in the fuse, fusible link and relay block (J/B)],
- to headlamp relay-1 terminal 7
- through 20 A fuse [No. 55, located in the fuse, fusible link and relay block (J/B)],
- to headlamp relay-2 terminals 2 and 5
- through 15 A fuse (No. 73, located in the fuse, fusible link and relay box), and
- to tail lamp relay terminals 2 and 6
- through 15 A fuse [No. 54, located in the fuse, fusible link and relay block (J/B)]
- to headlamp battery saver control unit terminal 7
- through 10 A fuse [No. 6, located in the fuse block (J/B) No. 1]
- to BCM terminal 105
- through 10 A fuse [No. 3, located in the fuse block (J/B) No. 1]
Ground is supplied
- to daytime light control unit terminal 16
- through body grounds E62 and E42, and
- to headlamp battery saver control unit terminals 4 and 11
- through body grounds M25 and M115.
When the ignition switch is in the ON or START position, power is also supplied
- to daytime light control unit terminal 3
- through 10 A fuse (No. 82, located in the fuse, fusible link and relay box),
- to headlamp battery saver control unit terminal 1, and
- to BCM terminal 68
- through 10 A fuse [No. 1, located in the fuse block (J/B) No. 1].
When the ignition switch is in the ACC or ON position, power is supplied
- to BCM terminal 60
- through 10 A fuse [No. 21, located in the fuse block (J/B) No. 1].
When the ignition switch is in the START position, power is supplied
- to daytime light control unit terminal 2
- through 10 A fuse [No. 14, located in the fuse block (J/B) No. 1].
HEADLAMP OPERATION
Power Supply to Low Beam and High Beam
When lighting switch is in 2ND or PASS position, ground is supplied
- to headlamp relay-1 and 2 terminals 1
- from headlamp battery saver control unit terminals 2 and 8
- through headlamp battery saver control unit terminals 3 and 9
- through lighting switch terminals 12 and 8
- through body grounds M25 and M115.
Headlamp relays are energized and then power is supplied to headlamps.
Low Beam Operation
When the lighting switch is turned to 2ND position and placed in LOW positions, power is supplied
- from terminals 5 and 6 of headlamp relay-1
- to terminal 7 of each headlamp Ground is supplied
- to terminal 8 of each headlamp
- through body grounds E42 (RH) and E62 (LH).
With power and ground supplied, the low beam headlamps illuminate.
High Beam Operation/Flash-to-pass Operation
When the lighting switch is turned to 2ND position and placed in HIGH position or PASS position, power is supplied
- through terminal 3 of headlamp relay-2
- to terminals 4 and 5 of daytime light control unit and
- to combination meter terminal 48 for the HIGH BEAM indicator.
Ground is supplied
- to terminal 14 of each headlamp
- through daytime light control unit terminals 9 and 10, and
- to daytime light control unit terminals 6 and 7
- through terminals 13 of each headlamp.
- to daytime light control unit terminal 13
- through combination meter terminal 47 for the HIGH BEAM indicator
- to daytime light control unit terminals 13 and 14
- through lighting switch terminals 6 and 9
- to lighting switch terminals 5 and 8
- through body grounds M25 and M115.
With power and ground supplied, the high beam headlamps and HIGH BEAM indicator illuminate.
BATTERY SAVER CONTROL
When the ignition switch is turned from ON (or START) to OFF (or ACC) positions while headlamps are illuminated, The RAP signal is supplied to terminal 10 of the headlamp battery saver control unit from BCM terminal 135.
After counting 45 seconds by the RAP signal from the BCM to headlamp battery saver control unit, the ground supply to terminals 1 of headlamp relay-1 and 2 from headlamp battery saver control unit terminals 2 and 8 is terminated.
Then headlamps are turned off.
The headlamps are turned off when driver or passenger door is opened even if 45 seconds have not passed after the ignition switch is turned from ON (or START) to OFF (or ACC) positions while headlamps are illuminated.
When the lighting switch is turned from OFF to 2ND after headlamps are turned to off by the battery saver control, ground is supplied
- to headlamp battery saver control unit terminals 5 and 13 from lighting switch terminal 11, and then
- to headlamp relay-1 and 2 terminals 1 from headlamp battery saver control unit terminals 2 and 8
- through headlamp battery saver control unit terminals 3 and 9, and
- through lighting switch terminal 12.
Then headlamps illuminate again.
AUTO LIGHT OPERATION
For auto light operation, refer to "AUTO LIGHT OPERATION" in "HEADLAMP (USA)".
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 7
- to terminal 13 of RH headlamp
- through terminal 14 of RH headlamp
- to daytime light control unit terminal 9
- through daytime light control unit terminal 6
- to terminal 13 of LH headlamp.
- through terminal 14 of LH headlamp to daytime light control unit terminal 10
Ground is supplied
- to daytime light control unit terminal 16
- through body grounds E42and E62.
Because the high beam headlamps are now wired in series, they operate at half illumination.
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.