If the entry unlock function does not operate for the driver door only, but the entry lock function operates, the request code is being transmitted properly from the driver door. In this case, there may be a problem related to the unlock sensor (connection between the certification ECU (smart key ECU assembly) and front door outside handle assembly LH).
When using the GTS with the ignition switch off, connect the GTS to the DLC3 and turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the GTS and the vehicle begins. Then select Model Code "KEY REGIST" under manual mode and enter the following menus: Body Electrical / Entry&Start(CAN). While using the GTS, periodically turn a courtesy light switch on and off at intervals of 1.5 seconds or less to maintain communication between the GTS and the vehicle.
The smart entry and start system (for Entry Function) uses the CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting. Troubleshoot the smart entry and start system (for Entry Function) after confirming that the communication systems are functioning properly.
Before replacing the certification ECU (smart key ECU assembly), refer to Service Bulletin.
After repair, confirm that no DTCs are output.
Check that there are no electrical key transmitter sub-assemblies in the vehicle.
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.
Door locks operate normally.
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Check that the entry unlock function.
Turn the ignition switch off.
| *a | Unlock Sensor (Backside) |
Open and close the driver door.
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.
Hold the electrical key transmitter sub-assembly at the same height as the door outside handle assembly LH and approximately 0.3 m (0.984 ft.) from the driver door.
Check that the LED of the electrical key transmitter sub-assembly blinks.
Touch the unlock sensor on the backside of the front door outside handle assembly LH for 2 seconds or more.*
*: Perform this step 3 seconds or more after performing step (3).
When checking the operation of the unlock sensor again, make sure to perform the procedure from step (1).
| Result | Proceed to |
|---|---|
| Entry function does not operate normally | A |
| Entry function operates normally | B |
A
B
Read the Data List according to the display on the GTS.
| Tester Display | Measurement Item | Range | Normal Condition | Diagnostic Note |
|---|---|---|---|---|
| FL Door Lock Position Switch Status | Front door LH unlock detection switch signal | Lock or Unlock | Lock: Front door LH locked
Unlock: Front door LH unlocked |
- |
| Tester Display |
|---|
| FL Door Lock Position Switch Status |
The GTS display changes correctly in response to the lock/unlock operation of the driver door.
| Proceed to |
|---|
| OK |
| NG |
OK
NG
| *a | Unlock Sensor (Backside) |
Open and close the driver door.
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.
Hold the electrical key transmitter sub-assembly at the same height as the door outside handle assembly LH and approximately 0.3 m (0.984 ft.) from the driver door.
Check that the LED of the electrical key transmitter sub-assembly blinks.
Read the Data List according to the display on the GTS.
Touch the unlock sensor on the backside of the front door outside handle assembly LH for 2 seconds or more.*
*: Perform this step 3 seconds or more after performing step (f).
When checking the operation of the unlock sensor again, make sure to perform the procedure from step (a).
| Tester Display | Measurement Item | Range | Normal Condition | Diagnostic Note |
|---|---|---|---|---|
| Driver Side Unlock 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. |
| Tester Display |
|---|
| Driver Side Unlock Sensor |
The GTS display changes correctly in response to the operation of the front door outside handle assembly LH.
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Disconnect the I222 certification ECU (smart key ECU assembly) connector.
Disconnect the L19*1 or L22*2 front door outside handle assembly LH connector.
*1: w/o Digital Key System
*2: w/ Digital Key System
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| I222-16 (CLG1) - L19-4 (ANT1) | Always | Below 1 Ω |
| I222-15 (CG1B) - L19-6 (ANT2) | Always | Below 1 Ω |
| I222-16 (CLG1) or L19-4 (ANT1) - Other terminals and body ground | Always | 10 kΩ or higher |
| I222-15 (CG1B) or L19-6 (ANT2) - Other terminals and body ground | Always | 10 kΩ or higher |
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| I222-16 (CLG1) - L22-4 (ANT1) | Always | Below 1 Ω |
| I222-15 (CG1B) - L22-6 (ANT2) | Always | Below 1 Ω |
| I222-16 (CLG1) or L22-4 (ANT1) - Other terminals and body ground | Always | 10 kΩ or higher |
| I222-15 (CG1B) or L22-6 (ANT2) - Other terminals and body ground | Always | 10 kΩ or higher |
Reconnect the L19*1 or L22*2 front door outside handle assembly LH connector.
*1: w/o Digital Key System
*2: w/ Digital Key System
Reconnect the I222 certification ECU (smart key ECU assembly) connector.
| Proceed to |
|---|
| OK |
| NG |
OK
NG
| *a | Unlock Sensor (Backside) |
Open and close the driver door.
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.
Hold the electrical key transmitter sub-assembly at the same height as the door outside handle assembly LH and approximately 0.3 m (0.984 ft.) from the driver door.
Check that the LED of the electrical key transmitter sub-assembly blinks.
Read the Data List according to the display on the GTS.
Touch the unlock sensor on the backside of the front door outside handle assembly LH for 2 seconds or more.*
*: Perform this step 3 seconds or more after performing step (g).
When checking the operation of the unlock sensor again, make sure to perform the procedure from step (a).
| Tester Display | Measurement Item | Range | Normal Condition | Diagnostic Note |
|---|---|---|---|---|
| Driver Side Unlock 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. |
| Tester Display |
|---|
| Driver Side Unlock Sensor |
The GTS display changes correctly in response to the operation of the front door outside handle assembly LH.
| Proceed to |
|---|
| OK |
| NG |
OK
NG