DESCRIPTION If the entry
lock function does not operate for the driver door only, but the entry
unlock function operates, the request code is being transmitted properly
from the driver door. In this case, there may be a problem related to
the lock sensor (connection between the certification ECU (smart key ECU
assembly) and front door outside handle assembly (for driver door)). 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.
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 |
 | |
| 2. |
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). | |
| OK |
| REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) |
|
NG | |
| |
| 3. |
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 I23 front door outside handle assembly (for driver door) connector.
(e) Reconnect the K10 certification ECU (smart key ECU assembly) connector.
| NG |
| REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
OK | |
| |
| 4. |
CHECK FRONT DOOR OUTSIDE HANDLE ASSEMBLY (FOR DRIVER DOOR) (INPUT TO CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)) |
|
*a | Component with harness connected
(Certification ECU (Smart Key ECU Assembly)) |
*b | Waveform 1 | |
*c | Lock sensor not touched |
*d | Lock sensor touched |
(a) Using an oscilloscope, check the waveform. OK: |
Tester Connection | Condition |
Tool Setting | Specified Condition | |
K10-17 (CLG1) - G40-18 (E) |
Procedure:
- Engine switch off
- Electrical key transmitter sub-assembly brought outside vehicle
- All doors closed
- All doors locked through wireless operation
(electrical key transmitter sub-assembly brought outside detection area*)
- Driver door lock sensor touched
| 5 V/DIV., 40 ms/DIV. |
Pulse generation (See waveform 1) |
*: For details about the entry function detection area, refer to Operation Check.
Click here
| OK |
| REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) |
| NG |
| REPLACE FRONT DOOR OUTSIDE HANDLE ASSEMBLY (FOR DRIVER DOOR) | | 
