DESCRIPTION If the entry
lock and unlock functions do not operate for the driver door only, the
request code may not be being transmitted from the driver door or the
front door outside handle assembly (for driver door) (touch sensor) may
be malfunctioning. If the entry functions for other doors operate
properly, communication between the electrical key transmitter
sub-assembly and electrical key and tire pressure monitoring system
receiver assembly is normal. In this case, there may be a problem with
request code transmission (communication between the certification ECU
(smart key ECU assembly) and front door outside handle assembly (for
driver door) (electrical key antenna)), or there may be wave
interference. WIRING DIAGRAM
 CAUTION / NOTICE / HINT
NOTICE:
- The smart key system (for Entry Function, Gasoline Model) uses the CAN
communication system. Inspect the communication function by following
How to Proceed with Troubleshooting. Troubleshoot the smart key system
(for Entry Function, Gasoline Model) after confirming that the
communication systems are functioning properly.
Click here 
- When using the Techstream with the engine switch off, connect the
Techstream to the DLC3 and turn a courtesy light switch on and off at
intervals of 1.5 seconds or less until communication between the
Techstream and the vehicle begins. Then select the vehicle type under
manual mode and enter the following menus: Body Electrical / Smart Key.
While using the Techstream, periodically turn a courtesy light switch on
and off at intervals of 1.5 seconds or less to maintain communication
between the Techstream and the vehicle.
- Check that there are no electrical key transmitter sub-assemblies in the vehicle.
- Before replacing the certification ECU (smart key ECU assembly), refer to Precaution.
Click here
- After repair, confirm that no DTCs are output.
HINT:
- If the driver door entry lock and unlock functions do not operate, the
cause of the malfunction may be stored in the certification ECU (smart
key ECU assembly).
- If the cause of the malfunction is stored in the certification ECU
(smart key ECU assembly), the following table is helpful in checking
whether the malfunction was caused by wave interference.
Body Electrical > Smart Key > Utility |
Tester Display | | Operation History | PROCEDURE
| 1. |
CHECK POWER DOOR LOCK CONTROL SYSTEM | (a)
When the door control switch on the multiplex network master switch
assembly is operated, check that the doors unlock and lock according to
the switch operation. Click here OK:
Door locks operate normally.
| NG |  | GO TO POWER DOOR LOCK CONTROL SYSTEM |
|
OK |
 | |
(a) Check for DTCs. Body Electrical > Smart Key > Trouble Codes
|
Result | Proceed to | |
DTCs are not output | A | |
DTCs are output | B |
| B |
| GO TO DIAGNOSTIC TROUBLE CODE CHART |
|
A | |
| |
| 3. |
CHECK WAVE ENVIRONMENT |
| (a)
Bring the electrical key transmitter sub-assembly approximately 0.3 m
(0.984 ft.) from the front door outside handle assembly (for driver
door) and perform an entry function check. Click here
- Communication may not be possible if the electrical key transmitter
sub-assembly is within 0.2 m (0.656 ft.) of the front door outside
handle assembly (for driver door).
- When the electrical key transmitter sub-assembly is brought near the
front door outside handle assembly (for driver door), the possibility of
wave interference decreases, and it can be determined if wave
interference is causing the problem symptom.
- If the inspection result is that the problem only occurs in certain
locations or at certain times of day, the possibility of wave
interference is high. Also, added vehicle components may cause wave
interference. If installed, remove them and perform the operation check.
- There may be wave interference if the vehicle is near broadcasting
antennas, large video displays, wireless garage door opener systems,
wireless security cameras, home security systems, etc. In this case,
move the vehicle to a different location and check if there is any
improvement.
- If a tool for checking radio waves, such as a signal strength meter, is
available, move around the area while observing both the LF band (used
by the vehicle antenna to form the detection area) and RF band (used by
the electrical key transmitter sub-assembly for transmission) to check
for locations where there is wave interference.
- When checking the operation of the entry lock function several times, it
can be operated up to 2 times consecutively. To operate the function 3
times or more consecutively, the doors need to be unlocked once.
However, this is only for the entry lock function, other door lock
operations, such as a wireless door lock operation can be performed
consecutively.
|
 |
|
*a | Approximately 0.3 m (0.984 ft.) | | |
| Result |
Proceed to | | Entry function does not operate normally |
A | | Entry function operates normally |
B |
| B |
| AFFECTED BY WAVE INTERFERENCE |
|
A | |
| |
| 4. |
READ VALUE USING TECHSTREAM (D-DOOR TOUCH SENSOR) |
(a) Turn the engine switch off. (b) Open and close the driver door.
(c)
With the electrical key transmitter sub-assembly outside of the
vehicle, press the lock switch of the electrical key transmitter
sub-assembly to lock all of the doors. (d) Hold the
electrical key transmitter sub-assembly at the same height as the door
outside handle assembly and approximately 0.3 m (0.984 ft.) from the
driver door. (e) Check that the LED of the electrical key transmitter sub-assembly blinks.
(f) Read the Data List according to the display on the Techstream.
| (g) Touch the unlock sensor on the backside of the front door outside handle assembly (for driver door).
HINT: When checking the operation of the unlock sensor again, make sure to perform the procedure from step (a). Body Electrical > Smart Key > Data List |
Tester Display | Measurement Item |
Range | Normal Condition |
Diagnostic Note | |
D-Door Touch Sensor |
Driver door touch sensor (unlock sensor) |
OFF or ON | OFF: Driver door touch sensor (unlock sensor) not touched
ON: Driver door touch sensor (unlock sensor) touched |
- Displays whether the unlock sensor is on or off (even if the sensor is
touched and contact is maintained, "ON" is displayed only momentarily).
- Use this Data List item to help determine if there is an unlock sensor
malfunction when the entry unlock function does not operate.
| Body Electrical > Smart Key > Data List |
Tester Display | |
D-Door Touch Sensor | OK:
The
Techstream display changes correctly in response to the operation of
the front door outside handle assembly (for driver door). |
 |
|
*a | Unlock Sensor (Backside) | | |
| NG |
| GO TO STEP 7 |
|
OK | |
| |
| 5. |
READ VALUE USING TECHSTREAM (D-DOOR TRIGGER SWITCH) |
(a) Turn the engine switch off. (b) Open and close the driver door.
(c)
Hold the electrical key transmitter sub-assembly at the same height as
the door outside handle assembly and approximately 0.3 m (0.984 ft.)
from the driver door. (d) Read the Data List according to the display on the Techstream.
| (e) Touch the lock sensor of the front door outside handle assembly (for driver door).
HINT:
- If the door does not lock even when touching the lock sensor, touch it with your palm.
- When checking the operation of the lock sensor again, make sure to perform the procedure from step (a).
Body Electrical > Smart Key > Data List |
Tester Display | Measurement Item |
Range | Normal Condition |
Diagnostic Note | |
D-Door Trigger Switch |
Driver door touch sensor (lock sensor) |
OFF or ON | OFF: Driver door touch sensor (lock sensor) not touched
ON: Driver door touch sensor (lock sensor) touched |
- Displays whether the lock sensor is on or off (even if the sensor is
touched and contact is maintained, "ON" is displayed only momentarily).
- Use this Data List item to help determine if there is a lock sensor malfunction when the entry lock function does not operate.
| Body Electrical > Smart Key > Data List |
Tester Display | |
D-Door Trigger Switch | HINT:
When
checking the operation of the entry lock function several times, it can
be operated up to 2 times consecutively. To operate the function 3
times or more consecutively, the doors need to be unlocked once.
However, this is only for the entry lock function, other door lock
operations, such as a wireless door lock operation can be performed
consecutively. OK: The
Techstream display changes correctly in response to the operation of the
front door outside handle assembly (for driver door). | |
| NG |
| GO TO STEP 7 |
|
OK | |
| |
| 6. |
CHECK KEY DIAGNOSTIC MODE | (a) Check the following antenna in key diagnostic mode. Body Electrical > Smart Key > Utility
|
Tester Display | | Communication Check(Key Diag Mode) |
(b) Select either channel 1 or channel 2 and perform key diagnostic mode inspection for each channel.
| (1) Check the electrical key antenna (for driver door): When
the electrical key transmitter sub-assembly is brought within 0.7 to 1 m
(2.30 to 3.28 ft.) of the front door outside handle assembly (for
driver door), check that the wireless buzzer sounds.
HINT:
- Select either channel 1 or channel 2 and perform the key diagnostic mode inspection for each channel.
- If the buzzer sounds with [CH1] displayed but not with [CH2], the
electrical key transmitter sub-assembly cannot be detected by channel 2
due to a malfunction, such as wave interference.
| |
|
|
*a | 0.7 to 1 m (2.30 to 3.28 ft.) | | |
|
Result | Proceed to | |
Wireless buzzer does not sound |
A | | Wireless buzzer sounds |
B |
| B |
| REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) |
|
A | |
| |
| 7. |
CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - FRONT DOOR OUTSIDE HANDLE ASSEMBLY (FOR DRIVER DOOR)) |
(a) Disconnect the K10 certification ECU (smart key ECU assembly) connector.
(b) Disconnect the I23 front door outside handle assembly (for driver door) connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance: |
Tester Connection | Condition |
Specified Condition | |
K10-17 (CLG1) - I23-6 (ANTE1) |
Always | Below 1 Ω | |
K10-16 (CG1B) - I23-4 (CLGB) |
Always | Below 1 Ω | |
K10-17 (CLG1) or I23-6 (ANTE1) - Other terminals and body ground |
Always | 10 kΩ or higher | |
K10-16 (CG1B) or I23-4 (CLGB) - Other terminals and body ground |
Always | 10 kΩ or higher |
(d) Reconnect the K10 certification ECU (smart key ECU assembly) connector.
| NG |
| REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
OK | |
| |
| 8. |
CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) (OUTPUT TO DRIVER DOOR ELECTRICAL KEY ANTENNA) |
| (a) Using an oscilloscope, check the waveform. OK: |
Tester Connection | Condition |
Tool Setting | Specified Condition | |
I23-6 (ANTE1) - I23-4 (CLGB) | Procedure:
- Engine switch off
- All doors closed
- Electrical key transmitter sub-assembly not inside vehicle
- All doors locked through wireless operation
(electrical key transmitter sub-assembly brought outside detection area*)
| 5 V/DIV., 100 ms/DIV. |
Pulse generation (See waveform 1) |
*: For details about the entry function detection area, refer to Operation Check.
Click here |
 |
|
*a | Front view of wire harness connector
(to Front Door Outside Handle Assembly (for Driver Door)) | |
*b | Waveform 1 | | |
| NG |
| REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) |
|
OK | |
| |
| 9. |
CHECK ENTRY LOCK OPERATION | (a) Connect all connectors and check that the function operates normally.
Click here |
Result | Proceed to | |
Entry function does not operate normally |
A | | Entry function operates normally |
B |
| B |
| END (CONNECTOR WAS NOT CONNECTED SECURELY) |
|
A | |
| |
| 10. |
REPLACE FRONT DOOR OUTSIDE HANDLE ASSEMBLY (FOR DRIVER DOOR) |
(a)
Replace the front door outside handle assembly (for driver door) with a
new one or the front door outside handle assembly (for front passenger
door) if it is functioning properly. Click here
|
NEXT | |
| |
| 11. |
CHECK ENTRY LOCK OPERATION | (a) Check that the function operates normally.
Click here |
Result | Proceed to | |
Entry function operates normally |
A | | Entry function does not operate normally |
B |
| A |
| END (FRONT DOOR OUTSIDE HANDLE ASSEMBLY (FOR DRIVER DOOR) WAS DEFECTIVE) |
| B |
| REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) | |
