Marker Lamp: Description and Operation

PARK, TAIL, LICENSE AND MARKER LAMPS
The park, tail, license and marker lamps are turned on when the headlamp switch is placed in the PARK LAMP or HEADLAMP position or anytime the headlights are requested. The park lamps are also turned ON with the front fog lamps. When the ignition switch is in the ON position, the DIM provides battery positive voltage to the controlled positive voltage circuit of the PRK LP relay coil. The rear fuse block supplies battery positive voltage to the switch contacts of the PRK LP relay. When the headlamp switch is in the PARK LAMP or the HEADLAMP position, the signal circuit of the park lamp switch of the DIM has ground at G200. In response to this signal, the DIM provides ground to the control circuit of the PRK LP relay coil, which energizes the relay coil. This closes the relay switch contacts. Current flows from the PRK LP relay to the LP PK L fuse and to the LP PK R fuse. From the fuse, the current flows to the park lamps. The park lamps are grounded at G401 and G402. The DIMR fuse supplies battery positive voltage to the license lamps and to the DIM park lamp input, for interior lamps dimming. The license lamps are grounded at G402.

POSITION LAMPS
The position lamps are on export vehicles only. Each lamp is located in the headlamp assembly. European countries require that side position lamps are activated when the vehicle is parked along the side of the road. The position function operates only when the gear selector is in the PARK position. The front position lamp and respective tail lamp illuminate when the headlamp switch is placed in the left or right position. Battery positive voltage is supplied to the STANDING LP relay coil and switch. Battery positive voltage is supplied through the normally closed relay contacts of the STANDING LP relay switch to each POSN LP relay coil. When the gear selector is in the PARK position, the dash integration module (DIM) grounds the STANDING LP relay coil which removes battery positive voltage from each POSN LP relay coil. The position lamps illuminate only when the ignition switch is in the OFF position. Battery positive voltage is supplied to each POSN LP relay switch. When the headlamp switch is placed in the RH PARK or the LH PARK position, the appropriate POSN LP relay coil is grounded through the headlamp switch contact. Battery positive voltage is then supplied to the appropriate position lamp and the respective tail/stop lamp. Both position lamps have ground at G401.