Daytime Running Lamp: Description and Operation

Daytime Running Lamps (DRL)

CENTRAL JUNCTION BOX (CJB)
DRL (daytime running lamps) use the full intensity low beam headlamps which are permanently illuminated when the vehicle is being driven. Two DRL (daytime running lamps) systems are available depending on market requirements.
The CJB (central junction box) controls the operation of the DRL (daytime running lamps). The DRL (daytime running lamps) are activated once the CJB (central junction box) detects an ignition on power mode 6 signal.
The CJB (central junction box) also monitors the lighting control switch and the auto lamps feature and overrides the DRL (daytime running lamps) if required.

DAYTIME RUNNING LAMPS - CANADA
The DRL for this market use full intensity low beam headlamps. The side marker lamps, tail lamps and license plate lamps will be on, but instrument cluster illumination will be off. DRL are active when the following parameters are met:
- PARK is not selected on the electronic transmission selector
- EPB (electronic parking brake) is off
- Power mode 6 (ignition on) detected by the CJB (central junction box)
- The CJB (central junction box) receives an engine running signal
- The lighting control switch is in the off or side lamps position.

NOTE:
If the lighting control switch is moved to the headlamp position, DRL (daytime running lamps) are deactivated and normal side lamp and headlamp functionality is operational.

NOTE:
When DRL (daytime running lamps) are active, the headlamp flash function using the left hand steering column multifunction switch will operate normally.
The high beam headlamp function using the left hand steering column stalk switch will be deactivated. When the transmission is in PARK, DRL (daytime running lamps) are turned off. This is to reduce battery discharge during long periods of engine idling in cold climate conditions. When the electronic transmission selector is moved from the PARK position, normal DRL (daytime running lamps) functionality is restored.

DAYTIME RUNNING LAMPS - DENMARK, HOLLAND, NORWAY, SWEDEN, FINLAND AND POLAND
DRL (daytime running lamps) for these markets use full intensity low beam headlamps. Side lamps and license plate lamps will be on, but instrument cluster illumination will be off. DRL (daytime running lamps) are active when the following parameters are met:
- Power mode 6 (ignition on) detected by the CJB (central junction box)
- The CJB (central junction box) receives an engine running signal
- The lighting control switch is in the off position.

NOTE:
When DRL (daytime running lamps) are active, the headlamp flash function using the left hand steering column multifunction switch will operate normally. The high beam headlamp function using the left hand steering column stalk switch will be deactivated.
If the lighting control switch is moved to the side lamp or headlamp positions, DRL (daytime running lamps) are deactivated and normal side lamp and headlamp functionality is operational.

AUTOMATIC HEADLAMPS
On vehicles fitted with the automatic headlamps feature, DRL (daytime running lamps) are overridden if the lighting control switch is in the 'Auto' position and the CJB (central junction box) receives a signal from the rain/light sensor to activate the exterior lights.
When the CJB (central junction box) receives a signal to de-activate the automatic headlamps feature the DRL (daytime running lamps) function is restored providing the parameters for DRL (daytime running lamps) activation are met.