Toyota Supra 2015 Wiring Diagram Manual page 122

SYSTEM OUTLINE
CURRENT ALWAYS FLOWS TO TERMINAL (A) 9 OF THE THEFT DETERRENT AND DOOR LOCK CONTROL ECU THROUGH THE
DOOR FUSE, AND TO TERMINAL (B) 1 THROUGH THE DOME FUSE.
WHEN THE IGNITION SW TURNED ON, THE CURRENT FLOWING THROUGH THE ECU-IG FUSE " TERMINAL (A) 7 OF THE ECU "
TERMINAL (A) 6 FLOWS THROUGH THE COIL SIDE OF THE POWER MAIN RELAY TO GROUND, CAUSING THE RELAY TO OPERATE.
THE CURRENT FLOWING THROUGH THE DOOR FUSE FLOWS TO THE DOOR LOCK CONTROL SWITCHES, CAUSING THE
INDICATOR LIGHT TO LIGHT UP.
1. MANUAL LOCK OPERATION
WHEN THE DOOR LOCK CONTROL SW OR KEY SW ARE PUSHED TO LOCK POSITION, A LOCK SIGNAL IS INPUT TO TERMINAL (B)
5, (B) 22 (FOR KEY SW) OF THE THEFT DETERRENT AND DOOR LOCK CONTROL ECU AND CAUSES THE ECU TO FUNCTION.
CURRENT FLOWS FROM TERMINAL (A) 9 OF THE ECU " TERMINAL (A) 3 " TERMINAL 2 (LH), TERMINAL 4 (RH) OF THE DOOR LOCK
MOTORS " TERMINAL 4 (LH), TERMINAL 2 (RH) " TERMINAL (A) 2 OF THE ECU " TERMINAL (A) 4 " GROUND AND THE DOOR LOCK
MOTOR CAUSES THE DOOR TO LOCK.
2. MANUAL LOCK OPERATION
WHEN THE DOOR LOCK CONTROL SW OR KEY SW ARE PUSHED TO UNLOCK POSITION, AN UNLOCK SIGNAL IS INPUT TO
TERMINAL (B) 8, (B) 6 (FOR KEY SW LH) OR (B) 16 (FOR KEY SW RH) OF THE THEFT DETERRENT AND DOOR LOCK CONTROL ECU
AND CAUSES TO FUNCTION.
CURRENT FLOWS FROM TERMINAL (A) 9 OF THE ECU " TERMINAL (A) 2 " TERMINAL 4 (LH), TERMINAL 2 (RH) OF THE DOOR LOCK
MOTORS " TERMINAL 2 (LH), TERMINAL 4 (RH) " TERMINAL (A) 3 OF THE ECU " TERMINAL (A) 4 " GROUND AND THE DOOR LOCK
MOTOR CAUSES THE DOOR TO UNLOCK.
WHEN UNLOCK OPERATION OCCURS USING THE LH DOOR KEY SW, DOING THE UNLOCK OPERATION ONCE UNLOCKS ONLY THE
DRIVER'S DOOR. TO UNLOCK ALL OTHER DOORS TOGETHER, UNLOCK OPERATION MUST BE DONE AGAIN WITHIN 3 SECONDS
OF THE FIRST OPERATION.
3. IGNITION KEY REMINDER OPERATION
OPERATION OF DOOR LOCK BUTTON (OPERATION OF DOOR LOCK MOTORS)
WHEN THE IGNITION KEY IS IN THE CYLINDER (UNLOCK WARNING SW ON) AND THE DOOR IS OPENED AND LOCKED USING
DOOR LOCK BUTTON (DOOR LOCK MOTOR). THE DOOR IS LOCKED ONCE BUT EACH DOOR IS UNLOCKED SOON BY THE
OPERATION OF THE ECU. AS A RESULT OF ECU ACTIVATION, THE CURRENT FLOWS FROM TERMINAL (A) 9 OF THE ECU "
TERMINAL (A) 2 " TERMINAL 4 (LH),TERMINAL 2 (RH)OF THE DOOR LOCK MOTORS " TERMINAL 2 (LH), TERMINAL 4 (RH) "
TERMINAL (A) 3 OF THE ECU " TERMINAL (A) 4 " GROUND AND CAUSES ALL THE DOOR LOCK CONTROL SW AND DOOR
LOCK KEY SW.
KEY LESS LOCK OPERATION
WHEN THE IGNITION KEY IS STILL INSERTED IN THE CYLINDER (UNLOCK WARNING SW ON), THE DOOR IS OPEN AND UNLOCK
OPERATION IS PREVENTED BY KEEPING THE DOOR LOCK BUTTON PRESSED TO THE LOCK SIDE, THE DOOR IS KEPT IN THE
LOCK CONDITION. IF THE DOOR IS THEN CLOSED, A SIGNAL IS INPUT TO THE ECU FROM THE DOOR COURTESY SW. THIS
ACTIVATES THE ECU AND EACH DOOR IS UNLOCKED.
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