Lexus IS250 IS220d GSE20 ALE20 - DOOR LOCK

ENTRY AND START SYSTEM - PROBLEM SYMPTOMS TABLE

HINT:

Use the table below to help determine the cause of the problem symptoms. The potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.

Inspect the fuses and relays related to this system before inspecting the suspected areas below.

ENTRY AND START SYSTEM
Symptom	Suspected area	See page
Entry lock / unlock does not operate.	1. Check for DTCs in the entry and start system (Starting function 4GR-FSE).
	2. Check for DTCs in the entry and start system (Starting function 2AD-FHV).
	3. Refer to PROBLEM SYMPTOMS TABLE of the power door lock control system ("All doors cannot be locked / unlocked simultaneously by neither door control switch nor door key cylinder").
	4. Courtesy light switch circuit
	5. Lock position switch circuit	-
	- Driver door
	- Front passenger door
	- Rear passenger door LH
	- Rear passenger door RH
	6. Touch sensor circuit
	7. Antenna circuit
	8. Refer to "ID code matching inside the cabin cannot be performed".	-
	9. Replace the door oscillator.
	10. Replace the main body ECU RH.	-
	11. Replace the certification ECU.	-
Luggage compartment does not open (when the electrical key is outside the vehicle).	1. Check for DTCs in the entry and start system (Starting function 4GR-FSE).
	2. Check for DTCs in the entry and start system (Starting function 2AD-FHV).
	3. Check if any function is cancelled due to customization.
	4. Refer to PROBLEM SYMPTOM TABLE of the luggage compartment door opener system ("Luggage compartment door opener does not operate").
	5. Operate the luggage compartment opener switch on the electrical key to check the wireless function.
	6. Refer to PROBLEM SYMPTOMS TABLE of the wireless door lock control system of the wireless door lock control system ("The wireless door lock control system does not operate").
	7. Check operation of the cabin oscillator in active test.
	8. Luggage oscillator circuit
	9. Luggage compartment opener switch circuit
	10. Replace the main body ECU LH.	-
	11. Replace the main body ECU RH.	-
	12. Replace the certification ECU.	-
All entry function does not operate.	1. Registration of the key.	-
	2. Certification ECU power source circuit
	3. Replace certification ECU.	-
Function to prevent electrical key confinement in the luggage compartment does not operate. (The luggage compartment does not open.)	1. Check for DTCs in the entry and start system (Starting function 4GR-FSE).
	2. Check for DTCs in the entry and start system (Starting function 2AD-FHV).
	3. Power door lock control system
	4. Courtesy light switch circuit
	5. Lock position switch circuit	-
	- Driver door
	- Front passenger door
	- Rear passenger door LH
	- Rear passenger door RH
	6. Check if any function is not cancelled due to customization.
	7. Operate the LOCK / UNLOCK SW on the key to check the wireless function.
	8. Refer to PROBLEM SYMPTOMS TABLE of the wireless door lock control system ("The wireless door lock control system does not operate").
	9. Check operation of the cabin oscillator in active test.
	10. Luggage oscillator circuit
	11 Replace the main body ECU RH.	-
	12. Replace the certification ECU.	-
Function to prevent electrical key confinement in the luggage compartment does not operate. (The alarm does not sound.)	1. Check if the function to prevent electrical key confinement in the luggage compartment operates.
	2. Check if answer back is performed when the wireless door lock is operated.
	3. Replace the certification ECU.	-
The outside alarm of the answer back and entry systems does not sound.	1. Check if the function to prevent electrical key confinement in the luggage compartment operates.
	2. Check that "Hazard" and "Buzz Resp Sound" in the DATA LIST of the main body ECU RH is YES. (If it is NO, go to power door lock system.)
	3. Wireless door lock tuner circuit (DTC B1242)
	4. Replace the certification ECU.	-
The inside alarm of the entry system does not sound.	1. Operate the LOCK / UNLOCK SW on the electrical key to check the wireless function.
	2. Refer to PROBLEM SYMPTOMS TABLE of the wireless door lock control system ("Wireless door lock function").
	3. Check if the electrical key reminder buzzer sounds.
	4. Replace the certification ECU.	-
ID code matching inside the cabin cannot be performed.	1. Check if any function is cancelled due to customization.
	2. Operate the LOCK / UNLOCK SW on the key to check the wireless function.
	3. Refer to PROBLEM SYMPTOMS TABLE of the wireless door lock control system ("The wireless door lock control system does not operate").
	4. Check the cabin oscillator operation in the active test.
	5. Cabin oscillator circuit
	6. Luggage oscillator circuit
	7. Replace the certification ECU.	-
ID code matching outside the cabin cannot be performed.	1. Check if any function is cancelled due to customization.
	2. Operate the LOCK / UNLOCK SW on the electrical key to check the wireless function.
	3. Refer to PROBLEM SYMPTOMS TABLE of the wireless door lock control system ("The wireless door lock control system does not operate").
	4. Check operation of each door oscillator in diagnostic mode.
	5. Door oscillator circuit
Key reminder buzzer does not sound.	1. Perform ACTIVE TEST for the combination meter.
	2. Check "Door Courtesy SW" in the DATA LIST of the door control system.
	3. Check the key reminder buzzer when the engine switch is on (ACC) and the drivers door is opened.	-
	4. Check if the steering wheel is locked when all power supplies are OFF and the drivers door is opened.	-
	5. "Steering wheel cannot be locked" in this table of the steering lock system.
	6. Check that the "Lck Bar Stuck" item in the DATA LIST of the certification ECU displays OK.
	7. Replace the steering lock ECU.	-
	8. Replace the certification ECU.	-

LEXUS IS250, IS220d / GSE20 ALE20

DOOR LOCK

Lexus IS250 IS220d GSE20 ALE20

ENTRY AND START SYSTEM