Headlights (Canada)

Exterior Lights

How the Headlights - Canada - Circuit Works

High and Low Beams

The headlight relays receive battery voltage at all times, and are controlled by the driver's multiplex control unit. When you turn the headlight switch to the HEAD position, ground is applied through the GRN wire to the coils of the headlight relays. The headlight relays are then energized, applying battery voltage to the left and right high and low beam headlight filaments, the DRL control unit, the high beam indicator and the DRL relay through fuses 43 and 45 (in the under-hood fuse/relay box).

Flash-to-Pass

When you hold the flash-to-pass switch in the ON position, ground is applied through the GRN wire to the coils of the headlight relays. The relays are then energized, applying battery voltage to the left and right high and low beam headlight filaments, the DRL control unit, the high beam indicator and the DRL relay through fuses 43 and 45 (in the under-hood fuse/relay box).

Auto-off Lights Function (EX, EX-L)

The headlight relays are controlled by the driver's multiplex control unit. If you leave the headlight switch in the HEAD position and exit the vehicle, the control unit will automatically turn the exterior lights off within 15 seconds after you close the doors. When you unlock or open the driver's door, the control unit automatically turns the lights back on.

Daytime Running Lights

When you turn the ignition switch to ON (II) with the parking brake released, the DRL control unit controls voltage and ground. The high beam headlights operate in series and act as resistors to reduce the voltage to the headlights.

If you apply the parking brake, ground is applied to the DRL control unit GRN/PUR wire. If the parking brake is applied before you turn the ignition switch to ON (II), the daytime mode will remain off until you release the parking brake. Once the high beams are in the daytime mode, applying the parking brake will not turn them off.