Daytime Running Lights (DRL) System Description
The daytime running lights system includes the MICU, the left and right high beam headlights, and the parking brake switch. The daytime running lights operate with the ignition switch turned to ON (II), the headlights off (headlight switch OFF or in the parking position), and the parking brake released.
When the daytime running lights are on, the MICU turns the high beam headlight control circuit on and off (duty cycle), which provides a reduced voltage (approximately 4-8 volts) to the high beam headlights (via the No. 48 and No. 51 fuses in the under-dash fuse/relay box; the high beam headlights come on with reduced brightness. If there is a problem with the daytime running lights system, the MICU sends a signal to the gauge control module, and the word "CHECK DRL SYSTEM" shows on the multi-information display.
- The daytime running lights are disabled when the ignition switch is turned to LOCK (0). To keep the daytime running lights from coming on, apply the parking brake switch while the ignition switch is in LOCK (0) position. When you then turn the ignition switch back to ON (II), the daytime running lights will not come on until the parking brake is released.
- The headlights revert to normal operation when you turn them on with the headlight switch.
- If there is a B-CAN communications failure, the "CHECK DRL SYSTEM" cannot be sent to the gauge control module and it will not show on the MID.