Lexus ES300 (1997 year). Manual - part 641

158

WIRELESS DOOR LOCK CONTROL

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DOOR LOCK ECU

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FROM POWER SOURCE SYSTEM (SEE PAGE 56)

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161

DOOR LOCK CONTROL (LOCK AND UNLOCK) AND LUGGAGE COMPARTMENT DOOR CONTROL (LUGGAGE COMPARTMENT DOOR
OPEN) IS PERFORMED BY REMOTE CONTROL, WITHOUT THE IGNITION KEY INSERTED IN THE DOOR KEY CYLINDER, USING
LOW–POWER ELECTRICAL WAVE EMITTED BY A TRANSMITTER.

1. WIRELESS DOOR LOCK OR UNLOCK NORMAL OPERATION

WITH THE IGNITION KEY NOT INSERTED INTO THE IGNITION KEY CYLINDER (UNLOCK WARNING SW OFF) AND ALL THE DOORS
COMPLETELY CLOSED, WHEN THE LOCK BUTTON (TRANSMITTER) IS PUSHED, THE WIRELESS DOOR LOCK CONTROL ECU
RECEIVES THE ELECTRICAL WAVES FROM THE TRANSMITTER, CAUSING IT TO OPERATE.
AS A RESULT, THE ECU JUDGES WHETHER THE DOOR IS LOCKED OR UNLOCKED BASED ON THE SIGNAL FROM THE DOOR LOCK
MOTOR AND DOOR UNLOCK DETECTION SW, AND SENDS A SIGNAL TO THE THEFT DETERRENT AND DOOR LOCK CONTROL ECU
TO SWITCH THE CONDITION FROM LOCK TO UNLOCK OR VICE VERSA, CAUSING THE DOOR LOCK MOTOR TO OPERATE.

2. WIRELESS LUGGAGE COMPARTMENT DOOR OPEN NORMAL OPERATION

WITH THE IGNITION KEY NOT INSERTED INTO THE IGNITION KEY CYLINDER (UNLOCK WARNING SW OFF), WHEN THE LUGGAGE
COMPARTMENT DOOR OPENER BUTTON (TRANSMITTER) IS PUSHED, THE WIRELESS DOOR LOCK CONTROL ECU RECEIVES THE
ELECTRICAL WAVES FROM THE TRANSMITTER, CAUSING IT TO OPERATE.
AS A RESULT, A SIGNAL FROM THE LUGGAGE COMPARTMENT DOOR UNLOCK SW IS SENT TO THE THEFT DETERRENT ECU,
CAUSING THE LUGGAGE COMPARTMENT DOOR OPENER MOTOR TO OPERATE.

3. WIRELESS DOOR UNLOCK OPERATION

PUSHING THE UNLOCK BUTTON (TRANSMITTER) ONCE, DRIVER’S DOOR IS UNLOCKED. FURTHERMORE, PUSHING THE BUTTON
AGAIN WITHIN 3 SECONDS, THE OTHER DOORS ARE UNLOCKED.

4. AUTOMATIC LOCK OPERATION

WITH THE IGNITION KEY NOT INSERTED INTO THE IGNITION KEY CYLINDER (UNLOCK WARNING SW OFF) AND ALL THE DOORS
COMPLETELY CLOSED, AFTER PUSHING THE BUTTON (TRANSMITTER) TO UNLOCK ALL THE DOORS, IF A DOOR IS NOT OPENED
WITHIN 30 SECONDS, ALL THE DOORS WILL BE AUTOMATICALLY RELOCKED.

5. WIRELESS CONTROL STOP FUNCTION

IF A DOOR IS OPEN (DOOR COURTESY SW ON), A SIGNAL IS INPUT FROM THE DOOR COURTESY SW TO THE WIRELESS DOOR
LOCK CONTROL ECU, STOPPING WIRELESS DOOR LOCK AND WIRELESS LUGGAGE COMPARTMENT DOOR OPEN.
IF THE IGNITION KEY IS IN THE IGNITION KEY CYLINDER (UNLOCK WARNING SW ON), THE UNLOCK WARNING SW INPUTS A
SIGNAL TO THE WIRELESS DOOR LOCK CONTROL ECU, STOPPING WIRELESS DOOR LOCK OR UNLOCK AND WIRELESS
LUGGAGE COMPARTMENT DOOR OPEN.

6. DOOR LOCK MOTOR PROTECTIVE FUNCTION

IF THE DOOR LOCK OR UNLOCK CONDITION DOES NOT CHANGE AFTER WIRELESS DOOR LOCK OR UNLOCK OPERATION, 2
SECONDS LATER, THE DOOR LOCK ECU SENDS CURRENT THREE TIMES TO THE DOOR LOCK MOTOR. IF THE DOOR LOCK
CONDITION STILL HAS NOT CHANGED AS A RESULT, THE WIRELESS DOOR LOCK ECU STOPS RECEPTION AND STOPS DOOR
LOCK AND UNLOCK FUNCTION.

7. VISUAL CONFIRMATION OF LOCK OR UNLOCK FUNCTION

IF ALL DOORS INDICATE THEY ARE LOCKED AFTER THE LOCK COMMAND, TAILLIGHTS AND PARKING LIGHTS WILL FLASH ONCE.
IF ANY DOOR INDICATES IT IS OPEN AFTER THE LOCK COMMAND, TAILLIGHTS AND PARKING LIGHTS WILL FLASH TWICE.

D 9, D10, D11, D12 DOOR COURTESY SW FRONT LH, RH, REAR LH, RH

1–GROUND : CLOSED WITH THE DOOR OPEN

U 1 UNLOCK WARNING SW (IGNITION KEY)

2–1 : CLOSED WITH THE IGNITION KEY IN THE CYLINDER

W 8 WIRELESS DOOR LOCK CONTROL ECU

8–GROUND : ALWAYS APPROX. 12 VOLTS
1–GROUND : ALWAYS CONTINUITY

14–GROUND : CONTINUITY WITH EACH OF THE DOOR OPEN
10–GROUND : CONTINUITY WITH THE IGNITION KEY IN THE CYLINDER

SYSTEM OUTLINE

SERVICE HINTS