Tail Lamp: Description and Operation

The parking, license and tail lamp operation is controlled by the lighting switch which is built into the combination switch and headlamp battery saver control unit. The battery saver system is controlled by the headlamp battery saver control unit and smart entrance control unit.
Power is supplied at all times
- to tail lamp relay terminals 1 and 3
- through 10 A fuse (No.60, located in the fuse and fusible link box), and
- to headlamp battery saver control unit terminal 7
- through 10 A fuse [No.12, located in the fuse block (J/B)].
When ignition switch is in ON or START position, power is supplied
- to headlamp battery saver control unit terminal 1
- through 10 A fuse [No.30, located in the fuse block (J/B)], and
- to headlamp battery saver control unit terminal 10, and
- to smart entrance control unit terminal 33
- through 10 A fuse [No.10, located in the fuse block (J/B)].
Ground is supplied to headlamp battery saver control unit terminals 4 and 11.

LIGHTING OPERATION BY LIGHTING SWITCH
When lighting switch is in 1ST (or 2ND) position, ground is supplied
- to tail lamp relay terminal 2 from headlamp battery saver control unit terminals 6 and 14
- through headlamp battery saver control unit terminals 5 and 13, and
- through lighting switch and body grounds E11, E22 and E53.
Tail lamp relay is then energized and the parking, license and tail lamps illuminate.

LIGHTING OPERATION BY AUTO LIGHT CONTROL SYSTEM
When lighting switch is in AUTO position, ground is supplied
- to tail lamp relay terminal 1 from headlamp battery saver control unit terminals 6 and 14
- through headlamp battery saver control unit terminals 5 and 13, and
- through auto light control unit terminal 7.
Tail lamp relay is then energized and the side marker, parking, license and tail lamps illuminate.

BATTERY SAVER CONTROL
When the ignition switch is turned from ON (or START) to OFF (or ACC) positions while parking, license and tail lamps are illuminated, the RAP signal is supplied to terminal 10 of the headlamp battery saver control unit from smart entrance control unit terminal 5.
After counting 45 seconds by the RAP signal from the smart entrance control unit to headlamp battery saver control unit, the ground supply to terminal 2 of the tail lamp relay from headlamp battery saver control unit terminals 6 and 14 is terminated.
Then the parking, license and tail lamps are turned off.
The parking, license and tail lamps are turned off when driver or passenger side door is opened even if 45 seconds have not passed after the ignition switch is turned from ON (or START) to OFF (or ACC) positions while parking, license and tail lamps are illuminated.
When the lighting switch is turned from OFF to 1ST (or 2ND) after the parking, license and tail lamps are turned off by the battery saver control, ground is supplied.
- to headlamp battery saver control unit terminals 5 and 13 from lighting switch terminal 11 or auto light control unit terminal 7, and
- to tail lamp relay terminal 1 from headlamp battery saver control unit terminals 6 and 14.
Then the parking, license and tail lamps illuminate again.