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BODY ELECTRICAL—LIGHTING
4. System Operation
When the Driver’s Door Outside Handle is Pulled and Released
The driver’s door outside handle switch engages when the driver’s door outside handle is pulled and released. Then
the voltage at terminal (3) of the integration relay drops from 0 V to 12 V. This activates the power transistor, which
causes the voltage at terminal (2) to drop from 12 V to 0 V and the illuminations to turn on.
After both doors are locked and the illumination is immediately turned off, the system does not accept any signal input
from the outside handle switch for 15 seconds. Therefore, even if the driver’s door outside handles is operated, it does
not cause the illumination to turn on during that time.
When the Driver’s or Passenger’s Door is Opened
When the driver’s or passenger’s door is opened, the courtesy switch on the respective door goes on. In this way,
terminal (4) or (6) of the integration relay switches from high level (12V) to low level (0V). As a result, the power
transistor is turned on and terminal (2) is switched from high level to low level, turning on the illuminations.
When 15 seconds has Passed Since Bother Doors were Closed
When both doors are closed and terminals (4) and (6) both go high level, the timer circuit operates. The timer keeps
the power transistor on for 15 seconds. After 15 seconds has passed, the illuminations are switched off.
When Both Doors are Closed and the Ignition Key is in a Position other than Lock
When both doors are closed and the ignition key is inserted in the ignition key cylinder and turned to a position other
than LOCK, terminals (4) and (6) both become high level and terminal (7) or (11) switches from low to high level.
As a result, the power transistor goes off and the illuminations are switched off regardless of the operation of the timer
circuit.
When Both Doors are Closed and Both Doors are Locked
When both doors are locked after both doors are closed, or are closed after being locked, terminals (4) and (6) become
high level together and terminals (17) and (18) switch from low to high level. As result, the power transistor goes
off and the illuminations are switched off regardless of the operation of the timer circuit.
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