Daylight Running Lamps

Daylight Running Lamps

The daylight running lamps will be operational if the following conditions are met:

The ignition switch is in the 'ignition' position. The engine is running. The automatic transmission isn't in 'Park'. The lighting switch isn't in the 'Headlamp' position.

The CCU (C0593) is provided an ignition feed via fuse 8 of the passenger compartment fuse box, and registers if the engine is running via the oil pressure switch. The CCU (C0592) provides a feed to the oil pressure switch (C0187) on a WN wire. The oil pressure switch contacts are closed when there is no oil pressure. When the engine is started, the rise in oil pressure causes the switch contacts to open.

If 'Park' is selected, the automatic transmission selector (C0244) provides a feed to the CCU (C0593) on a KO wire. For more information on automatic transmission operation, refer to the Electronic Automatic Transmission (EAT) – 02MY section of this manual.  ELECTRONIC AUTOMATIC TRANSMISSION (EAT) – 02MY.

The CCU (C0428) monitors the condition of the lighting switch (C0041) via a OU wire. A feed will only be provided to the CCU when the lighting switch is turned to the 'Headlamp' position.

If all of these conditions are met, the CCU (C0593) provides an earth path for the daylight running relay (C0212) on an RG wire. This allows a battery feed from fusible link 12 of the engine compartment fuse box (C0570) to flow through the relay (C0212) and power the headlamp dipped beam bulbs as described previously.