Toyota Tundra 2005 Service - Repair - Maintenance page 3914

System Outline
Current always flows to TERMINAL 3 of the integration relay through the POWER fuse.
1. Manual Lock Operation
(Driver's door)
To push the door lock control SW or door key lock and unlock SW to LOCK position, a lock signal is input to the integration
relay and causes the relay to function. Current flows from TERMINAL 3 of the relay to TERMINAL 13 to TERMINAL 2 of the
door lock motor to TERMINAL 3 to TERMINAL 2 of the TVIP ECU to TERMINAL 4 to TERMINAL 12 of the integration relay
to TERMINAL 8 to GROUND and the door lock motor causes the door to lock.
(Passenger's door)
To push the door lock control SW or door key lock and unlock SW to LOCK position, a lock signal is input to the integration
relay and causes the relay to function. Current flows from TERMINAL 3 of the relay to TERMINAL 13 to TERMINAL 2 of the
door lock motor to TERMINAL 3 to TERMINAL 12 of the relay to TERMINAL 8 to GROUND and the door lock motor causes
the door to lock.
2. Manual Unlock Operation
(Driver's door)
To push the door lock control SW or door key lock and unlock SW to UNLOCK position, an unlock signal is input to the
integration relay and causes the relay to function. Current flows from TERMINAL 3 of the relay to TERMINAL 12 to
TERMINAL 4 of the TVIP ECU to TERMINAL 2 to TERMINAL 3 of the door lock motor to TERMINAL 2 to TERMINAL 13 of
the integration relay to TERMINAL 8 to GROUND and the door lock motor causes the door to unlock.
(Passenger's door)
To push the door lock control SW or door key lock and unlock SW to UNLOCK position, an unlock signal is input to the
integration relay and causes the relay to function. Current flows from TERMINAL 3 of the relay to TERMINAL 12 to
TERMINAL 3 of the door lock motor to TERMINAL 2 to TERMINAL 13 of the relay to TERMINAL 8 to GROUND and the door
lock motor causes the door to unlock.
3. Double Operation Unlock Operation
When the door key lock and unlock SW LH is turned to unlock position, only the front LH door is mechanically unlocked.
Turning the door key lock and unlock SW LH to the unlock side causes a signal to be input to the relay, and if the signal is
input again within 3 seconds by turning the door key lock and unlock SW LH to the unlock side again, current flows from
TERMINAL 12 of the integration relay to TERMINAL 4 of the TVIP ECU to TERMINAL 2 to TERMINAL 3 of the door lock
motor, TERMINAL 2 to TERMINAL 13 of the integration relay to TERMINAL 8 to GROUND, causing the door lock motors to
operate and unlock the doors.
4. Key Confine Prevention Function
∗ Operating door lock knob (In door lock motor operation)
With ignition key in cylinder (Unlock warning SW on), when any door is opened and locked using door lock knob (Door
lock motor), the door is locked once but each door is unlocked soon by the function of the integration relay. As a result,
current flows from TERMINAL 3 of the relay to TERMINAL 12 to TERMINAL 3 of the door lock motors to TERMINAL 2 to
TERMINAL 13 of the relay to TERMINAL 8 to GROUND and causes all the doors to unlock.
∗ Operating door lock control SW or door key lock and unlock SW
With ignition key in cylinder (Unlock warning SW on), when any door is opened and locked using the door lock control
SW or door key lock and unlock SW, all doors are locked once but each door is unlocked by the function of the SW
contained in motor, which inputs the signal to the integration relay. According to this input signal, current flows from
TERMINAL 3 of the relay to TERMINAL 12 to TERMINAL 3 of the door lock motors to TERMINAL 2 to TERMINAL 13 of
the relay to TERMINAL 8 to GROUND and causes all the doors to unlock.
2005 TOYOTA TUNDRA (EWD611U)
257