Tail Lamp: Description and Operation

When the light control SW is turned to the TAIL or HEAD position, the signal is input to TERMINAL TAIL of the body ECU. This activates the body ECU to flow the current from the battery into the ALT fuse, taillight relay (Coil side), TERMINAL TRLY of the body ECU to GROUND, in that order to turn ON the taillight relay. The current Flows from the TAIL fuse into the parking lights, front side marker lights, rear side marker lights, license plate lights, TERMINAL 3 of the light failure sensor to TERMINAL 9 to taillights in that order to turn ON each light.

TAILLIGHT DISCONNECTION WARNING
If any taillight wiring is faulty when the ignition SW is turned to the ON position with the light control SW set at TAIL or HEAD, the light failure sensor detects a voltage difference and is activated to turn ON the rear lights warning light in the combination meter to warn the driver. The warning light is remained lit until the ignition SW is turned to the OFF position.