SYSTEM DESCRIPTION
The following pattern will be used: "Operation" indicates user operation using the entry and start system. "Expected operation of the vehicle" indicates how a known good vehicle will react in accordance with each operation. "Suspected Area/Diagnosis" indicates suspected malfunctioning areas and tips for each diagnosis if the vehicle did not react as expected.
Example: Operation No.
| Operation | - |
| Expected operation of the vehicle | - |
| Waveform or Output Value | - |
| Suspected Area | Diagnosis |
|---|---|
| - | - |
BASIC PRECAUTIONS
DTC numbers and ECU Data Lists of the entry and start system can be checked using the GTS.
Check for DTCs using the following procedure. If any DTCs are output, diagnose those DTCs first.
Connect the GTS to the DLC3.
Turn the engine switch on (IG).
Enter the following menus: Body Electrical / Entry & Start or Power Source Control / Trouble Codes.
Enter the following menus: Powertrain / Engine / Trouble Codes.
If the engine switch cannot be turned on (IG), follow the procedure below to start communication between the GTS and vehicle.
Connect the GTS to the DLC3 and turn a courtesy light switch on and off at 1.5 second intervals until communication between the GTS and vehicle begins (the GTS screen changes when communication begins).
If cancel is selected for the entry and start system customize setting, cancel the smart key cancel setting Click here.
DIAGRAM OF ENTRY AND START SYSTEM
DIAGNOSIS IN ACCORDANCE WITH USER OPERATION
Operation 1
| Operation | Turn the engine switch off and lock all the doors, then take the electrical key transmitter sub-assembly approximately 3 m (9.84 ft.) or more away from the vehicle. Tech Tips The detection area of each electrical key antenna (outside) is formed by emitting a periodic LF band request signal every 0.25 seconds. The detection area formed by each front door outside handle assembly (electrical key antenna) has a detection range of approximately 0.7 m (2.30 ft.). |
| Waveform or output value | Pulse generation (D41-12 (CLG1) - D48-11 (GND)*) |
Tech Tips
*: Click here
Operation 2
| Operation | Bring the electrical key transmitter sub-assembly within 0.7 m (2.30 ft.) of the driver door. Tech Tips The system is in unlock standby mode when the electrical key transmitter sub-assembly is in the detection area and the key ID code sent by the electrical key transmitter sub-assembly matches the key ID code stored by the certification ECU (smart key ECU assembly). The door unlocks if the unlock sensor is touched by hand with the system in unlock standby mode. Signal transmission: Certification ECU (smart key ECU assembly) → Front door outside handle assembly (electrical key antenna) → Electrical key transmitter sub-assembly → Door control receiver → Certification ECU (smart key ECU assembly) → Main body ECU (network gateway ECU)) |
| Expected operation of the vehicle | The electrical key transmitter sub-assembly LED starts blinking. If it does not, any of the parts listed in the table below may be malfunctioning. |
| Waveform or output value |
|
Tech Tips
*: Click here
| Suspected Area | Diagnosis |
|---|---|
| Electrical key transmitter sub-assembly |
Tech Tips Before replacing the electrical key transmitter sub-assembly, check if the transmitter battery is depleted. |
| Transmitter battery is depleted |
|
| Wave Interference |
|
| Certification ECU (smart key ECU assembly) | - |
| Front door outside handle assembly | Vehicle exterior detection area is not formed properly.
|
| Door control receiver |
|
| Vehicle battery is discharged | It may be possible to tell whether the vehicle battery is discharged by operating the horn. |
| Others |
|
Operation 3
| Operation | Touch the unlock sensor of the driver door with the electrical key transmitter sub-assembly in the exterior detection area. |
| Expected operation of the vehicle | While the doors are unlocked, the answer back is performed at the same time. If they do not, any of the parts listed in the table below may be malfunctioning. |
| Waveform or output value |
|
Tech Tips
*: Click here
| Suspected Area | Diagnosis |
|---|---|
| The suspected parts below overlap with the parts covered in operation 2 for when the electrical key transmitter sub-assembly LED does not blink. | - |
| Front door outside handle assembly (unlock sensor) |
|
| Door lock/unlock mechanism | If a door cannot be locked/unlocked by operating the door control switch on the door in the cabin, the door lock mechanism is malfunctioning. |
Operation 4
| Operation | After getting into the vehicle while carrying the electrical key transmitter sub-assembly, close the door and press the engine switch once with the shift lever in P*1 while not depressing the brake pedal*1 or clutch pedal*2. |
| Expected operation of the vehicle |
If it does not, the parts listed below may be malfunctioning. Tech Tips When the engine switch is pressed, the indoor electrical key oscillator forms a key detection area inside the vehicle and detects the electrical key transmitter sub-assembly in the cabin. The electrical key transmitter sub-assembly sends the ID code upon receiving a request signal and the electrical key transmitter sub-assembly LED illuminates for a short time. After pressing the engine switch, if the key ID code sent by the electrical key transmitter sub-assembly matches the key ID code stored by the certification ECU (smart key ECU assembly), the ACC relay turns on and the smart warning light in the combination meter assembly blinks green slowly. Then after the power source mode has changed, L code and S code*3 verification has been completed, the steering wheel will be unlocked and the immobiliser will be inactive. Then the Data List status of "Immobiliser" will be changed from "Set" to "Unset". Signal transmission: Certification ECU (smart key ECU assembly) → Indoor electrical key oscillator → Electrical key transmitter sub-assembly → Door control receiver → Certification ECU (smart key ECU assembly) Tech Tips The interior detection area is formed when any of the following conditions are met:
|
| Waveform or output value |
|
*1: for Automatic Transmission
*2: for Manual Transmission
*3: w/ ID Code Box
Tech Tips
*: Click here
| Suspected Area | Diagnosis |
|---|---|
| Certification ECU (smart key ECU assembly) | - |
| Wave Interference |
|
| Indoor electrical key oscillators that form the interior detection areas. |
|
| Engine switch | Under normal operation, after the engine switch is pressed, "ON" is displayed for the Data List items "Start Switch1" and "Start Switch2". |
| ID code box (immobiliser code ECU)*1 | It is necessary for "S Code Check" in the Data List to display "OK". If "S Code Check" displays "OK", the certification ECU (smart key ECU assembly) code and ID code box (immobiliser code ECU) code match. |
| Park/neutral position switch assembly*2 | Under normal conditions, "Neutral SW/ Clutch SW" in the Data List displays "ON" when the shift lever is moved to P. |
| Steering lock ECU (steering lock actuator assembly) |
|
*1: w/ ID Code Box
*2: for Automatic Transmission
Tech Tips
The electrical key transmitter sub-assembly, the transmitter battery and the vehicle battery have already been inspected in the previous operation steps. However, if they have not been inspected, inspect them.
Operation 5
| Operation | Depress the brake pedal*1 or clutch pedal*2 with the shift lever in P*1 while carrying an electrical key transmitter sub-assembly. |
| Expected operation of the vehicle | The smart warning light in the combination meter assembly illuminates green. If it does not, the parts listed below may be malfunctioning. |
*1: for Automatic Transmission
*2: for Manual Transmission
| Suspected Area | Diagnosis |
|---|---|
| Stop light switch assembly*1 | If the brake pedal is depressed, "ON" is displayed for the Data List item "Stop Light Switch1". |
| Clutch start switch assembly*2 | If the clutch pedal is depressed, "ON" is displayed for the Data List item "Neutral SW/ Clutch SW". |
| Certification ECU (smart key ECU assembly) | Start function-Terminals of ECU Click here |
*1: for Automatic Transmission
*2: for Manual Transmission
Operation 6
| Operation | After getting into the vehicle while carrying the electrical key transmitter sub-assembly, press the engine switch with the shift lever in P*1 while depressing the brake pedal*1 or clutch pedal*2. |
| Expected operation of the vehicle | The engine starts. If it does not, the parts listed below may be malfunctioning. Tech Tips If the push start switch is pushed while the steering lock is unlocked, the starter activation request output terminal on the smart key computer assembly (certification ECU) sends out the starter activation request signal to the ECM, and then the starter relay terminal of the ECM supplies 12 V to the starter relay. |
*1: for Automatic Transmission
*2: for Manual Transmission
| Suspected Area | Diagnosis |
|---|---|
| Steering lock system | Under normal operation, the steering wheel will be unlocked and "ON" is displayed for the Data List item "Steering Unlock Switch". |
| Certification ECU (smart key ECU assembly) | The Data List item [Starter Request Signal] is an output that is requesting the engine to be started. When this is [ON], the smart key computer assembly (certification ECU) is sending out the engine start request signal to the ECM. |
| ECM | The Data List item [Starter SW] is a starter activation command. When this is turned "ON", a voltage of 12 V is output to the starter relay terminal and applied to the starter relay. |
| Starter relay | The Data List item [Starter Signal] indicates the starter relay terminal voltage of the ECM, and indicates if the voltage was actually applied on the starter relay or not. |
| Starter | - |
| Vehicle battery is discharged | Whether the vehicle battery is discharged or not can be checked easily by operating the horn. |
Operation 7
| Operation | Press the engine switch. |
| Expected operation of the vehicle | The engine stops, the smart warning light blinks green. |
Operation 8
| Operation | Open any of the doors with the engine switch off. |
| Expected operation of the vehicle | The steering wheel locks. If it does not, the parts listed below may be malfunctioning. |
| Suspected Area | Diagnosis |
|---|---|
| Steering lock system | - |
| Door courtesy light switch assembly | When any of the doors are opened, "OFF" is displayed for the Data List item "D Door Courtesy SW". |
Operation 9
| Operation | Touch the lock sensor of the driver door outside handle while carrying the electrical key transmitter sub-assembly. |
| Expected operation of the vehicle | Answer back is performed at the same time when the doors are locked. |
VEHICLE BATTERY SAVING FUNCTION
When the entry and start system (for Entry Function) is operating, the vehicle performs key detection operations every 0.25 seconds. Therefore, if the vehicle left as is for a long period of time, the battery may become fully depleted. The following controls help reduce the rate at which the battery is depleted.
If the engine is not started for 5 days or more, periodic signal transmission from the electrical key antennas stops. However, the doors can still be unlocked by touching the unlock sensor of a front door outside handle assembly.
If the engine is not started for 14 days or more, the lock and unlock sensors of the front passenger side door outside handle assembly are disabled. Therefore, only the unlock sensor of the front door outside handle assembly of the driver side door can be used to unlock the doors.
If 10 minutes or more elapse while the electrical key transmitter sub-assembly is in an exterior detection area, the exterior electrical key antenna detecting the electrical key transmitter sub-assembly will stop operating.
To restore operation of the entry and start system, perform any of the following operations.
While carrying the key, touch the lock and unlock sensor of the front door outside handle assembly of the driver side door and perform a door lock or unlock operation.
Any door is opened and then closed.
Lock or unlock all doors with the wireless operation.
Insert the mechanical key into the door key cylinder of the driver side door and lock or unlock the doors.
WARNING FUNCTION
Shift lever not in P (power source cut reminder) vehicle exit warning (for Automatic Transmission)
Situation A: The driver side door is opened and vehicle exit is attempted while the shift lever is not in P.
| Item | Content |
|---|---|
| Reason for warning |
|
| Warning start condition (All conditions are met) |
|
| Warning description |
|
| Warning stop condition (Any condition is met) |
|
Situation B: Under the conditions specified in situation A, the electrical key transmitter sub-assembly is brought out of the vehicle, the driver side door is closed and movement away from the vehicle is attempted.
| Item | Content |
|---|---|
| Reason for warning |
|
| Warning start condition (All conditions are met) |
|
| Warning description |
|
| Warning stop condition (Any condition is met) |
|
Shift lever in P* (power source cut reminder) vehicle exit warning (Key reminder warning)
*: for Automatic Transmission
Situation A: The driver side door is opened and vehicle exit is attempted while the steering lock is unlocked.
| Item | Content |
|---|---|
| Reason for warning | Vehicle theft prevention |
| Warning start condition (Either condition is met) |
Condition 1:
Condition 2 (1 second):
|
| Warning description |
|
| Warning stop condition (One of conditions is met) |
|
Situation B: Under the conditions specified in situation A, the electrical key transmitter sub-assembly is brought out of the vehicle, the driver side door is closed and movement away from the vehicle is attempted.
| Item | Content |
|---|---|
| Reason for warning | Vehicle theft prevention |
| Warning start condition (All conditions are met) |
|
| Warning description |
|
| Warning stop condition (Either condition is met) |
|
Situation C: Under the conditions specified in situation B, the doors are closed and an entry lock operation is attempted.
| Item | Content |
|---|---|
| Reason for warning | Vehicle theft prevention |
| Warning start condition (All conditions are met) |
|
| Warning description |
|
| Warning stop condition (One of conditions is met) |
|
Passenger has brought electrical key transmitter sub-assembly out of vehicle warning
Any door other than the driver side door is opened and vehicle exit is attempted while carrying the key.
| Item | Content |
|---|---|
| Reason for warning | Prevention of engine being unable to be restarted |
| Warning start condition (All conditions are met) |
|
| Warning description |
|
| Warning stop condition (Either condition is met) |
|
Key is not within detection area warning
An attempt is made to turn the engine switch on (ACC) or on (IG) or to start the engine while the key cannot be detected inside the vehicle or is not operating properly.
| Item | Content |
|---|---|
| Reason for warning | User confusion prevention |
| Warning start condition (All conditions are met) |
|
| Warning description |
|
| Warning stop condition (One of conditions is met) |
|
Starting to drive without key warning
The driver starts driving while they key is not in the vehicle.
| Item | Content |
|---|---|
| Reason for warning | Prevention of engine being unable to be restarted |
| Warning start condition (All conditions are met) |
|
| Warning description |
|
| Warning stop condition (Either condition is met) |
|
Key left inside vehicle warning
An entry lock operation is attempted while the key is inside the vehicle.
| Item | Content |
|---|---|
| Reason for warning | Vehicle theft prevention |
| Warning start condition (All conditions are met) |
|
| Warning description |
|
| Warning stop condition (One of conditions is met) |
|
Door ajar entry lock warning
An entry lock operation is attempted while any door is ajar.
| Item | Content |
|---|---|
| Reason for warning | Vehicle theft prevention |
| Warning start condition (All conditions are met) |
|
| Warning description |
|
| Warning stop condition (One of conditions is met) |
|
Key lock-in prevention function
The electrical key transmitter sub-assembly is locked in the vehicle.
| Item | Content |
|---|---|
| Reason for warning | Vehicle theft prevention |
| Warning start condition (Either condition is met) |
Condition 1:
Condition 2*2:
|
| Warning description |
|
| Warning stop condition (One of conditions is met) |
|
*1: A keyless lock operation is when a door is locked by operating the door lock knob of an open door, and then closing the door while pulling the front door outside handle assembly.
*2: w/ Double Locking System
Key battery low warning
The vehicle is driven while the transmitter battery is almost depleted.
| Item | Content |
|---|---|
| Reason for warning |
|
| Warning start condition (Either condition is met) |
Condition 1:
Condition 2:
|
| Warning description |
|
| Warning stop condition (Either condition is met) |
|
*: A key low battery warning record when the engine switch was turned off after 20 minutes has elapsed since the engine switch was turned on (IG).
Steering not unlocked warning
The steering cannot be unlocked.
Shift lever is moved to a position other than P before the steering is unlocked (for Automatic Transmission).
| Item | Content |
|---|---|
| Reason for warning | Helpful function |
| Warning start condition (All conditions are met) |
Steering lock cannot be released |
| Warning description |
|
| Warning stop condition (Either condition is met) |
|
Entry and start system error warning
An error that could lead to a malfunction in the steering lock ECU is detected, an ignition drive circuit malfunction is detected, or a vehicle speed information error is detected.
| Item | Content |
|---|---|
| Reason for warning | Malfunction detection |
| Warning start condition (Any conditions are met) |
|
| Warning description |
|
| Warning stop condition (Either condition is met) |
|
*: for Manual Transmission
Emergency procedure display
If the door is opened with the mechanical key and the engine switch is pressed, the electrical key transmitter sub-assembly is not detected inside the vehicle, or if the engine switch is pressed, the key is not detected inside the vehicle twice in a row.
| Item | Content |
|---|---|
| Reason for warning | Helpful function |
| Warning start condition (One of conditions are met when engine switch is pushed) |
|
| Warning description |
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| Warning stop condition (One of conditions is met) |
|
Immobiliser verification completion notification
If the electrical key transmitter sub-assembly touches the engine switch when the transmitter battery in the electrical key transmitter sub-assembly is dead, when there is an entry cancel, or when there is radio wave interference.
| Item | Content |
|---|---|
| Reason for warning | Helpful function |
| Warning start condition (All conditions are met) |
|
| Warning description |
|