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FUNCTION ● The TCU has the following control functions. Item Details of control Direction indicators Switches the director indicators (Left, Right or All) when the combination switch or Trailer direction indicator buzzer Sounds a buzzer during direction indicator operation when towing a trailer. Light warning buzzer Sounds warning buzzer when driver’s door is opened with light switch in the 1st or Ignition key warning buzzer Sounds warning buzzer when driver’s door is opened with key in ignition and the Rear window defogger timer Turn off rear window defogger and door mirror heater, if equipped, about 15 minutes Battery saver Shuts off interior lamp in 30 minutes if any door is left open when ignition switch is Interior lamp timer Keep interior lamp illuminated for about 30 seconds when: ● driver’s door is unlocked, ● the ignition is switched off, ● driver’s door is opened and then closed. The timer is cancelled, and interior lamp turns off when: ● driver’s door is locked, or ● ignition switch is turned “ON”. Theft warning Normal operation Monitors doors, hood, boot lid, door locks, volumetric sensors (if not excluded), igni- Diagnostic mode Indicates the last three alarm triggers by flashing the direction indicators. Central door lock Centrally locks and unlocks the vehicle Super lock Activates and de-activates the super lock system. TIME CONTROL UNIT (TCU) System Description (Cont’d) EL-307 |