Smart Key System (For Entry Function) (Diagnostics & Symptom Tests): Overview Toyota Corolla X рестайлинг

SYSTEM DESCRIPTION

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1. SMART KEY SYSTEM DESCRIPTION In addition to conventional mechanical key and wireless door lock control functions, the smart key system enables door locking/unlocking, steering lock releasing, engine starting, and luggage compartment door opening without operating the key. The only requirement is that the key is in the user's possession. This system is controlled by the certification ECU (smart key ECU assembly). When the certification ECU (smart key ECU assembly) detects the presence of a key in one of the detection areas, it identifies and checks the ID code, and outputs operation signals to the related ECU in accordance with their functions. The detection areas are formed by 6 electrical key oscillators (2 door electrical key oscillators, 3 indoor electrical key oscillators, and 1 outside electrical key oscillator).
2. DETECTION AREA Precautions for the entire system: Be sure to carry the key during inspection of the smart key system. As weak radio waves are used to detect the key, the key detection area may decrease, or the key may not be detected correctly in the following situations: The key battery is depleted. Any facilities that generate strong radio waves, such as a TV tower, power plant, broadcast station, or gas station, are located near the inspection site. A wireless device, such as a cellular phone, is carried with the key. The key is in contact with or covered with metal. Another wireless door lock control function is operated near the vehicle. The key is located near a device that generates high voltage or noise. The key may be difficult to operate for a reason relating to the vehicle body shape. The key may not be detected correctly if it is around the vehicle's windows, the door handle, or the center of the bumper even when it is in the detection area outside the vehicle. The key may not be detected correctly if it is on the instrument panel, rear package tray, floor, or in the glove box even when it is in the detection area inside the vehicle. The engine cannot be started even when the key is in the detection area inside the luggage compartment. The key may not operate if the key is not held properly. The smart key system does not operate in the following conditions: The smart key system is canceled. The key battery is completely depleted (the indicator does not blink when pushing any of the buttons on the key).
3. FUNCTION OF MAIN COMPONENTS Component Function Key Consists of mechanical key, transmitter for wireless door lock control, and transceiver for smart key system Certification ECU (smart key ECU assembly) Controls smart key system in accordance with signals from each electrical key oscillator, various switches, ECUs, and key Judges and certifies ID code from door control receiver Transmits engine immobilizer unset signal to ID code box (immobilizer code ECU) Transmits steering unlock signals to steering lock ECU Main Body ECU (instrument panel junction block) Controls push button start function in accordance with signals from various switches, ECUs, and combination meter Transmits key verification request signal to certification ECU (smart key ECU assembly) in accordance with engine switch signal, and turns relays ON and OFF Receives request signal from certification ECU (smart key ECU assembly) and actuates door lock motor to unlock or lock door Transmits each door condition signal to certification ECU (smart key ECU assembly) ID Code Box (immobilizer code ECU) Receives steering unlock or engine immobilizer unset signals from certification ECU (smart key ECU assembly), certifies them, and transmits unset signals to steering lock ECU or ECM Outside Door Handle (driver door and passenger door) (antenna) Transmits request signals Outside Door Handle (driver door and passenger door) (touch sensor) Detects that person touches inside of outside handle Outside Door Handle (driver door and passenger door) (lock switch) Transmits door lock request signals to certification ECU (smart key ECU assembly) Door Electrical Key Oscillator (driver door and passenger door) Receives request signal from certification ECU (smart key ECU assembly), and forms detection area around front door Indoor Electrical Key Oscillator (front and rear) Receives request signal from certification ECU (smart key ECU assembly), and forms detection area in vehicle interior Indoor Electrical Key Oscillator (luggage compartment) Receives request signal from certification ECU (smart key ECU assembly), and forms detection area in luggage compartment Outside Electrical Key Oscillator (luggage compartment) Receives request signal from certification ECU (smart key ECU assembly), and forms detection area around luggage compartment door Door Control Receiver Receives ID code from key in detection area and transmits it to certification ECU (smart key ECU assembly) Receives ID code from key in luggage compartment and transmits it to certification ECU (smart key ECU assembly) Luggage Compartment Door Opener Outer Switch Transmits luggage compartment door open request signal to certification ECU (smart key ECU assembly) Stop Light Switch Outputs state of brake pedal to main body ECU (instrument panel junction block) Wireless Door Lock Buzzer Combination Meter Multi-information Display Buzzer When certification ECU (smart key ECU assembly) detects human errors such as those below, it warns driver by sounding wireless door lock buzzer, displaying information and sounding a buzzer in combination meter in accordance with request signal from ECU Example: Key is taken out of vehicle Driver leaves vehicle while engine is still running
4. CONSTRUCTION AND OPERATION Key The key consists of a mechanical key, a transmitter for the wireless door lock control, and a transceiver for the smart key system. The transceiver for the smart key system receives signals from the oscillators and sends the ID code to the tuner. The transmitter for the wireless door lock control has a LOCK switch, UNLOCK switch, LUGGAGE COMPARTMENT switch. This mechanical key works for the driver door, luggage compartment door, and glove box, but cannot start the engine. A total of 4 keys can be registered. Electrical key oscillator (door electrical key oscillators, indoor electrical key oscillators (front, rear and luggage compartment) and outside electrical key oscillator (luggage compartment)) Each electrical key oscillator transmits the request signal received from the certification ECU (smart key ECU assembly), and forms a key detection area to detect the presence of a key. The detection area formed by the door electrical key oscillator and outside electrical key oscillator (luggage compartment) is approximately 0.7 to 1.0 m (2.3 to 3.3 ft.) from the outside handle of the door or the center of the rear bumper. The detection area of the door electrical key oscillator is formed by transmitting a request signal every 0.25 seconds while the engine switch is off and each door is locked. In this way, the oscillator detects the proximity of a key. During entry lock, the detection area is formed with the lock switch on. The detection area of the outside electrical key oscillator (luggage compartment) is formed when the power luggage door open switch is on. The detection area of the indoor electrical key oscillator (front and rear) is formed when the driver door is opened or closed, during start ignition, when a warning is activated, or the lock switch is on. The detection area of the indoor electrical key oscillator (luggage compartment) is formed when the luggage compartment door is closed, or the luggage compartment opener outer switch is pressed.
5. ENTRY FUNCTION OPERATION The smart key system has the following functions: Function Outline Mechanical Key Operation is same as conventional mechanical key. Wireless Door Lock Control This function remotely locks and unlocks all doors or luggage compartment. Operation is same as wireless door lock control system. However, receiver in certification ECU (smart key ECU assembly) uses entry door control receiver to control locking and unlocking. Entry Illumination When person carrying key enters detection area, door will enter unlock standby mode and front map light will illuminate. Entry Unlock When key is located in detection area of door electrical key oscillator, door will unlock by touching inside of outside door handle. Entry Unlock Mode Switching. Refer to «CUSTOMIZE PARAMETERS»(ref-426154-S31062740542011101200000) Changes doors that can be unlocked with entry unlock function between 2 modes. Driver door mode All door mode Entry Lock When key is located in detection area of door electrical key oscillator and engine switch is off, door can be locked by pressing lock switch on outside door handle. Entry Luggage Compartment Open When key is in detection area of outside electrical key oscillator (luggage compartment), luggage compartment door opens by pressing luggage compartment opener outer switch. Key Lock-in Prevention Prevents confinement of key if door is locked using outside door handle while key is still inside vehicle. If all doors are locked and luggage compartment door is closed while key is still in luggage compartment, warning buzzer sounds. If luggage compartment open switch is operated, luggage compartment door can be opened. Warning When any of situations below occur, smart key system causes certification ECU (smart key ECU assembly) to sound buzzer in combination meter and wireless door lock buzzer in order to alert driver. Occupant leaves with key. Engine switch is operated while key is outside actuation area. Entry lock is operated while key is inside vehicle. Key battery is weak. The key is left in the vehicle. A door is ajar. The key is left in the luggage compartment. Steering lock does not release. The steering lock mechanism is malfunctioning. The main body ECU (instrument panel junction block) is malfunctioning. Battery Saving If key is constantly located within actuation area of door electrical key oscillator, system maintains periodic communication with key. Therefore, if vehicle remains parked in that state for a long time, key battery and vehicle battery could be drained. Key Cancel. Refer to «CUSTOMIZE PARAMETERS»(ref-426154-S31062740542011101200000) Following key functions can be cancelled by performing certain operations: Entry Unlock/Lock Entry Luggage Compartment Open Key Lock-in Prevention Warning Key Code Registration The total number of keys that can be registered is four. Enables the registration (writing and storing) of transmitter recognition codes in the EEPROM that is contained in the certification ECU (smart key ECU assembly).
6. WIRELESS DOOR LOCK AND UNLOCK AND LUGGAGE COMPARTMENT OPEN FUNCTION Push the LOCK/UNLOCK/LUGGAGE COMPARTMENT switch on the key to operate each function. For details. Refer to «OPERATION CHECK»(ref-426156-S31786906162011101200000).
7. ENTRY UNLOCK FUNCTION The detection area is formed by communication between a door electrical key oscillator and door control receiver when the door is locked in order to detect access of the person carrying the key. When the person carrying the key enters the detection area around the vehicle, the matching of the ID codes for a door electrical key oscillator and key will automatically be performed. After the matching is completed, the door will enter unlock standby mode. In unlock standby mode, the antenna built into the outside handle starts sensing. If the outside handle is held (the back side of the handle is touched), the door unlock operation will be performed. At this time, the hazard warning light blinks twice and the wireless door lock buzzer sounds twice. If any of the doors are not opened after a door unlock operation, all doors will automatically lock after 60 seconds.
8. ENTRY LOCK FUNCTION After leaving the vehicle carrying the key, push the lock switch on the outside handle when all the doors are closed. The certification ECU (smart key ECU assembly) determines whether the key is located inside or outside the cabin based on the information from a door electrical key oscillator and indoor electrical key oscillator. Then matching of the ID codes is performed. When the matching result shows that the ID codes of the key and indoor antenna do not match and the ID codes of the key and door electrical key oscillator match, the door lock function will operate. At this time, the hazard warning lights blink once and the wireless door lock buzzer sounds once. If the key is located inside the cabin, the door lock function will not operate and the alarm buzzer (beep sound) will sound for 2 seconds.
9. ENTRY LUGGAGE COMPARTMENT OPEN FUNCTION Stand in front of the luggage compartment with the key and push the power luggage compartment opener switch to start the matching of the ID codes for the outside electrical key oscillator (luggage compartment). If the ID codes match, luggage compartment door open operation will be performed.
10. KEY LOCK-IN PREVENTION FUNCTION If you attempt to lock the door through keyless operation (move the lock knob to the lock position and then close the door) with the key in the cabin, the system determines that the key is located in the cabin and unlocks the door. If the luggage compartment is closed with the key in it, the alarm will sound and the luggage compartment can be opened only when all the doors are locked in order to prevent key confinement in the vehicle.
11. WARNING FUNCTION General When any of the situations below occur, the smart key system causes the certification ECU (smart key ECU assembly) to sound the buzzer in the combination meter and the wireless door lock buzzer in order to alert the driver. Warning Function Operation Condition Situation Exit warning if shift lever position is not P and power source mode is not off. A Exit warning if shift lever position is P and power source mode is not off. B An occupant leaves with the key. C The engine switch is operated while the key is outside the detection area. D Entry lock is operated while the key is inside the cabin or luggage compartment. E The key battery is weak. F The key reminder warning sounds. G A door is ajar. H The key is left in the luggage compartment. I Steering lock does not release. J The steering lock mechanism is malfunctioning. K The main body ECU (instrument panel junction block) is malfunctioning. L Situation A There are 2 patterns for situation A. Pattern 1: In situation A, the door is opened and the user tries to leave the vehicle. Pattern 2: Then the user holds the key and tries to move away from the vehicle. In these situations, the following control is performed: Pattern 1 Possible Effects without Warning Sudden vehicle start, vehicle theft, vehicle roll-away Warning Condition The certification ECU (smart key ECU assembly) gives warning when all following conditions are satisfied: The shift lever position is not P. The engine switch is not off. The driver side door is opened. Vehicle speed is less than 5 km/h (3.1 mph). Combination Meter Buzzer Warning: Continuous sound Combination Meter Smart Key Indicator Light - Wireless Door Lock Buzzer - Warning Stop Condition The warning is stopped when one of the following conditions is met: The engine switch is off. The shift lever position is P. The driver side door is closed. Vehicle speed is above 5 km/h (3.1 mph). Pattern 2 Possible Effects without Warning Sudden vehicle start, vehicle theft, vehicle roll-away Warning Condition The certification ECU (smart key ECU assembly) gives warning when all following conditions are satisfied: The shift lever position is not P. The engine switch is not off. The driver side door is opened and closed. Vehicle speed is 0 km/h (0 mph). The key is not in the cabin or luggage compartment. Combination Meter Buzzer Warning: Continuous sound The warning is stopped when one of the following conditions is met: The engine switch is off. The shift lever position is P. The key is in the cabin or luggage compartment. Vehicle speed is above 0 km/h (0 mph). Combination Meter Smart Key Indicator Light Flashes Wireless Door Lock Buzzer Warning: Continuous sound The warning is stopped when one of the following conditions is met: The engine switch is off. The shift lever position is P. The key is in the cabin or luggage compartment. Vehicle speed is above 0 km/h (0 mph). Situation B There are 2 patterns for situation B. Pattern 1: In situation B, the door is opened and the user tries to leave the vehicle. Then the user holds the key and tries to move away from the vehicle. Pattern 2: Then the user tries to use the entry lock and presses the lock switch. In these situations, the following control is performed: Pattern 1 Possible Effects without Warning Vehicle theft, engine cannot be restarted Warning Condition The certification ECU (smart key ECU assembly) gives warning when all following conditions are satisfied: The shift lever position is P. The engine switch is not off. The driver side door is opened and closed. The key is not in the cabin or luggage compartment. Combination Meter Buzzer Warning: Sounds once Combination Meter Smart Key Indicator Light Flashes Wireless Door Lock Buzzer Warning: Sounds 3 times The warning is stopped when either of the following conditions is met: The engine switch is off. The key is in the cabin or luggage compartment. Pattern 2 Possible Effects without Warning Vehicle theft Warning Condition The certification ECU (smart key ECU assembly) gives warning when all following conditions are satisfied: The shift lever position is P. The engine switch is not off. All doors are closed. The lock switch is "ON". The key is not in the cabin or luggage compartment. The key is outside vehicle (within one of the actuation areas). Combination Meter Buzzer - Combination Meter Smart Key Indicator Light - Wireless Door Lock Buzzer Warning: Sounds for 2 seconds Situation C In this situation, the following control is performed: Possible Effects without Warning Engine cannot be restarted Warning Condition The certification ECU (smart key ECU assembly) gives warning when all following conditions are satisfied: The engine switch is not off. Any door other than driver side door is opened and closed. The key is not in the cabin or luggage compartment. Combination Meter Buzzer Warning: Sounds once Combination Meter Smart Key Indicator Light Flashes Wireless Door Lock Buzzer Warning: Sounds 3 times The warning is stopped when one of the following conditions is met: The engine switch is off. Vehicle speed is above 0 km/h (0 mph). The key is in the cabin or luggage compartment. Situation D In this situation, the following control is performed: Possible Effects without Warning Confuses the user Warning Condition The certification ECU (smart key ECU assembly) gives warning when both of the following conditions are satisfied: The engine switch is off --> on (IG). The key is not in the cabin. Combination Meter Buzzer Warning: Sounds once Combination Meter Smart Key Indicator Light Flashes Information is displayed on the combination meter for 8seconds (disappears after 8 seconds). Wireless Door Lock Buzzer - Situation E In this situation, the following control is performed: Possible Effects without Warning Vehicle theft Warning Condition The certification ECU (smart key ECU assembly) gives warning when all following conditions are satisfied: The engine switch is off. All doors are closed. The lock switch is "ON". The key is in the cabin or luggage compartment. Combination Meter Buzzer - Combination Meter Smart Key Indicator Light - Wireless Door Lock Buzzer Warning: Sounds for 2 seconds Situation F In this situation, the following control is performed: Possible Effects without Warning Smart key system does not function Warning Condition The certification ECU (smart key ECU assembly) gives warning when all following conditions are satisfied: The engine switch is turned off after being left on (IG) for over 20 minutes. The key battery voltage is low. The key is in the cabin. Combination Meter Buzzer Warning: Sounds once Combination Meter Smart Key Indicator Light - Wireless Door Lock Buzzer - Situation G There are 2 patterns for situation G. Pattern 1: When the driver's door is open, the driver turns the engine switch on (ACC) and attempts to leave the vehicle. Pattern 2: When the driver's door is open, the driver turns the engine switch from on (IG) to off and attempts to leave the vehicle. In these situations, the following control is performed: PATTERN 1 AND PATTERN 2 Possible Effects without Warning Vehicle theft Warning Condition The warning is activated when either of the following conditions is met: The engine switch is on (ACC) and the driver door is opened. The engine switch is off, the steering is unlocked, and the driver door is opened. Combination Meter Buzzer Continues to sound at short and even intervals Combination Meter Smart Key Indicator Light - Wireless Door Lock Buzzer - Engine Switch Indicator Light - Warning Stop Condition The warning is stopped when one of the following conditions is met: The engine switch is on (IG). The driver side door is closed. The engine switch is off and the steering is locked. Situation H The lock switch on the door outside handle is pressed to perform entry lock with a door open. In this situation, the following control is performed: Possible Effects without Warning Vehicle theft Warning Condition The warning is activated when all of the following conditions are met: The engine switch is off. Any doors are opened. The entry lock button on the outer door handle is operated. Combination Meter Buzzer - Combination Meter Smart Key Indicator Light - Wireless Door Lock Buzzer Warning: Continuous sound Engine Switch Indicator Light - Warning Stop Condition The warning is stopped when one of the following conditions is met: The engine switch is off. All doors are closed. Wireless door lock remote function is unlocked. Entry unlock is operated. 10 seconds have elapsed since the wireless door lock buzzer was activated. Situation I The luggage compartment door is closed with the key left in the luggage compartment. In this situation, the following control is performed: Possible Effects without Warning Vehicle theft Warning Condition The warning is activated when all of the following conditions are met: Vehicle speed is 0 km/h (0 mph). All doors are closed and all doors are locked or the state where the door after unlock operation is waiting to open. Entry luggage compartment open function is available. Combination Meter Buzzer - Combination Meter Smart Key Indicator Light - Wireless Door Lock Buzzer Sounds for 2 seconds Warning Stop Condition - Situation J The steering lock cannot be released. In this situation, the following control is performed: Possible Effects without Warning Vehicle theft Warning Condition The steering lock cannot be released, thus the engine is prevented from starting. Combination Meter Buzzer - Combination Meter Smart Key Indicator Light Flashes Wireless Door Lock Buzzer - Engine Switch Indicator Light The green indicator blinks at 1-second intervals (goes off automatically in 30 seconds). Warning Stop Condition The engine switch is pressed while the steering wheel is turned left and right, and the steering lock is successfully released. Situation K A malfunction of the steering lock ECU is detected. In this situation, the following control is performed: Possible Effects without Warning Vehicle theft Warning Condition A malfunction of the steering lock ECU is detected. Combination Meter Buzzer - Combination Meter Smart Key Indicator Light Flashes Wireless Door Lock Buzzer - Engine Switch Indicator Light The amber indicator blinks at 2-second intervals (goes off automatically in 15 seconds). Warning Stop Condition The steering lock ECU returns to normal. Situation L A malfunction of the main body ECU (instrument panel junction block) is detected. In this situation, the following control is performed: Possible Effects without Warning Vehicle theft Warning Condition A malfunction in the main body ECU (instrument panel junction block) is detected. Combination Meter Buzzer - Combination Meter Smart Key Indicator Light - Wireless Door Lock Buzzer - Engine Switch Indicator Light The amber indicator blinks at 2-second intervals (goes off automatically in 15 seconds). Warning Stop Condition The main body ECU (instrument panel junction block) returns to normal.
12. BATTERY SAVING Vehicle Battery Saving Function In the smart key system, signals are emitted outside the vehicle at a prescribed interval (0.25 seconds) when the doors are locked. Therefore, the vehicle battery could be drained if the vehicle remains parked for a long time. For this reason, the controls listed below are carried out: Condition Control Both conditions below are met for 5 days: Key is not in detection area. Touch sensor or lock switch operation is not performed. Signal transmission interval is extended from 0.25 to 0.75 seconds. Both conditions below are met for 14 days: Key is not in detection area. Touch sensor or lock switch operation is not performed. The smart key system is automatically deactivated. Reinstatement Conditions A wireless door lock control signal (lock, unlock) is input and the ID code matches. A user carries the key and pushes a lock switch on an outside door handle. A door is locked or unlocked by the mechanical key. Key Battery and Vehicle Battery Saving Function In the smart key system, if the key is constantly located within the vehicle exterior detection area of the doors, the system maintains periodic communication with the key. Therefore, if the vehicle remains parked in that state for a long time, the key battery and the vehicle battery could be drained. For this reason, if this state continues longer than 10 minutes, the smart key system automatically becomes deactivated. Reinstatement Conditions A wireless door lock control signal (lock, unlock) is input and the ID code matches. A user carries the key and pushes a lock switch on an outside door handle. A door is locked or unlocked by the mechanical key.

DESCRIPTION

The smart key system uses the wireless door lock buzzer to perform various vehicle exterior warnings. When each warning's conditions are met, the certification ECU (smart key ECU assembly) sends a buzzer signal to the wireless door lock buzzer, and the wireless door lock buzzer sounds.

When the entry functions and wireless door lock functions do not operate, a malfunction or wave interference may be occurring in either of the following: 1) signal communication between the door control receiver and certification ECU (smart key ECU assembly) (communication shared by entry and wireless functions); or 2) electrical key transmitter.

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When the wireless functions can be used to lock and unlock the doors, communication between the door control receiver and certification ECU (smart key ECU assembly) is normal. When the entry functions do not operate, one of the following may be the cause: 1) entry cancel function is set through customization; 2) malfunction in smart key system communication (electrical key transmitter and vehicle); or 3) wave interference.

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1. READ VALUE USING TECHSTREAM Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Smart Key / Data List. Read the Data List according to the display on the Techstream. SMART KEY (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)) Tester Display Measurement Item/Range Normal Condition Diagnostic Note Auto Entry Cancel SW Entry function cancel / ON or OFF Mode status is displayed - Result Result Proceed to Entry function is ON A Entry function is OFF B A --> See step 7 B: Go to next step
2. CHECK WAVE ENVIRONMENT Move the electrical key transmitter as described below and perform the operation inspection. HINT: When the electrical key transmitter is brought near the door outside handle or outside electrical key oscillator, the possibility of wave interference decreases, and it can be determined if wave interference is causing the problem symptom. The transmitting waves of the wireless functions and entry functions are the same, but the wave logic is different. As a result, it is possible that only the wireless functions or only the entry functions are affected by wave interference. Bring the electrical key transmitter near the front RH door outside handle, and perform a front RH door entry lock and unlock operation check. NOTE: If the key is brought within 0.2 m (0.656 ft.) of the door handle, communication is not possible. Bring the electrical key transmitter near the front LH door outside handle, and perform a front LH door entry lock and unlock operation check. NOTE: If the key is brought within 0.2 m (0.656 ft.) of the door handle, communication is not possible. Bring the electrical key transmitter near the outside electrical key oscillator (in rear bumper), and perform an entry luggage compartment open function check. NOTE: If the key is brought within 0.2 m (0.656 ft.) of the rear bumper, communication is not possible. HINT: If the inspection result indicates that the problem only occurs in certain locations or 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. Result Result Proceed to Some operation checks are normal A All operation checks fail B A --> AFFECTED BY WAVE INTERFERENCE B: Go to next step
3. PERFORM KEY DIAGNOSTIC MODE INSPECTION Diagnostic mode inspection Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Smart Key / Utility / Communication Check (Key Diag Mode) / Overhead + Driver Side. When the electrical key transmitter is in the position shown in the illustration, check that the wireless door lock buzzer sounds. Diagnostic mode inspection Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Smart Key / Utility / Communication Check (Key Diag Mode) / Overhead + Passenger Side. When the electrical key transmitter is in the position shown in the illustration, check that the wireless door lock buzzer sounds. Diagnostic mode inspection Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Smart Key / Utility / Communication Check (Key Diag Mode) / Overhead + Luggage (outside). When the electrical key transmitter is in the position shown in the illustration, check that the wireless door lock buzzer sounds. Diagnostic mode inspection Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Smart Access / Utility / Communication Check (Key Diag Mode) / Overhead + Front Room. When the electrical key transmitter is placed on the driver seat or front passenger seat cushion, check that the wireless door lock buzzer sounds. Diagnostic mode inspection Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Smart Key / Utility / Communication Check (Key Diag Mode) / Overhead + Rear Room. When the electrical key transmitter is in the position shown in the illustration, check that the wireless door lock buzzer sounds. Diagnostic mode inspection Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Smart Key / Utility / Communication Check (Key Diag Mode) / Overhead + Luggage (inside). When the electrical key transmitter is in the position shown in the illustration, check that the wireless door lock buzzer sounds. Result Result Proceed to Some diagnostic mode inspections fail (door) A Some diagnostic mode inspections fail (indoor) B Some diagnostic mode inspections fail (luggage compartment) C All diagnostic mode inspections are normal D All diagnostic mode inspections fail E D --> See step 10 C --> See step 9 B --> See step 8 A --> GO TO OTHER PROBLEM (PROCEED TO «PROBLEM SYMPTOMS TABLE»(ref-426152-S04088252372011101200000) PROBLEM SYMPTOM TABLE FOR EACH DOOR) E: Go to next step
4. REPLACE ELECTRICAL KEY TRANSMITTER Replace the electrical key transmitter. NEXT: Go to next step
5. REGISTER ELECTRICAL KEY TRANSMITTER Register the electrical key transmitter. Refer to «REGISTRATION»(ref-425889-S34666242112011101200000). NEXT: Go to next step
6. CHECK OPERATION Check that the entry functions operate normally. OK Entry functions operate normally. NG --> See step 11 OK --> END (ELECTRICAL KEY TRANSMITTER IS DEFECTIVE)
7. PERFORM CANCELLATION OF ENTRY KEY CANCEL FUNCTION. Refer to «CUSTOMIZE PARAMETERS»(ref-426154-S31062740542011101200000)
8. GO TO OTHER PROBLEM. Refer to «Room Oscillator does not Recognize Key»(ref-426154-S11064932552011101200000)
9. GO TO OTHER PROBLEM. Refer to «Luggage Compartment Door Entry Unlock Function does not Operate when Key is Outside Luggage Compartment»(ref-426154-S21026776372011101200000)
10. REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to «REMOVAL»(ref-426151-S31315461072011101200000)
11. REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to «REMOVAL»(ref-426151-S31315461072011101200000)

If the driver door entry unlock function does not operate but the entry lock function operates, communication between the vehicle and electrical key transmitter is normal. As a result, the touch sensor circuit can be considered to be faulty (certification ECU (smart key ECU assembly) --> driver side door outside handle --> driver side door electrical key oscillator).

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1. CHECK POWER DOOR LOCK OPERATION When the master switch assembly's door control switch is operated, check that the locked doors unlock. Refer to «OPERATION CHECK»(ref-426152-S04340942752011101200000). OK Door locks operate normally. NG --> See step 10 OK: Go to next step
2. READ VALUE USING TECHSTREAM (DOOR LOCK POSITION SWITCH) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Main Body / Data List. Read the Data List according to the display on the Techstream. MAIN BODY (MAIN BODY ECU (INSTRUMENT PANEL JUNCTION BLOCK)) Tester Display Measurement Item/Range Normal Condition Diagnostic Note D-Door Lock Pos SW Driver side door lock position switch signal/ON or OFF ON: Driver side door is unlocked OFF: Driver side door is locked - OK On the Techstream screen, the display changes between ON and OFF as shown in the chart above. Result Result Proceed to OK A NG B (Refer to «PROBLEM SYMPTOMS TABLE»(ref-426152-S04088252372011101200000) "Driver Door LOCK/UNLOCK Functions do not Operate" in the problem symptoms table) B --> See step 12 A: Go to next step
3. READ VALUE USING TECHSTREAM Enter the following menus: Body Electrical / Smart Key / Data List. Read the Data List according to the display on the Techstream. SMART KEY (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)) Tester Display Measurement Item/Range Normal Condition Diagnostic Note D-Door Touch Sensor Driver side door touch sensor/ON or OFF ON: Sensor is touched OFF: Sensor is not touched - OK On the Techstream screen, the item changes between ON and OFF according to the chart above. NG --> See step 4 OK --> See step 11
4. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU - DOOR ELECTRICAL KEY OSCILLATOR) Disconnect the certification ECU (smart key ECU assembly) connector. Disconnect the door electrical key oscillator connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition E36-5 (SEL1) - T2-4 (SEL) Always Below 1 ohms E36-22 (SEN1) - T2-6 (SENS) Always Below 1 ohms E36-5 (SEL1) - Body ground Always 10 kohms or higher E36-22 (SEN1) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
5. CHECK HARNESS AND CONNECTOR (DOOR ELECTRICAL KEY OSCILLATOR - FRONT DOOR OUTSIDE HANDLE) Disconnect the front door outside handle connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition T1-6 (SGT) - T2-2 (SGT) Always Below 1 ohms T1-6 (SGT) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
6. REPLACE DOOR ELECTRICAL KEY OSCILLATOR Replace the door electrical key oscillator. Refer to «REMOVAL»(ref-426151-S27995486192011101200000). NEXT: Go to next step
7. CHECK DOOR ELECTRICAL KEY OSCILLATOR (OPERATION) Check that the entry functions operate normally. OK Entry functions operate normally. NG --> See step 8 OK --> END (DOOR ELECTRICAL KEY OSCILLATOR IS DEFECTIVE)
8. REPLACE FRONT DOOR OUTSIDE HANDLE Replace the front door outside handle (driver side). Refer to «REMOVAL»(ref-426151-S15671098622011101200000). NEXT: Go to next step
9. CHECK FRONT DOOR OUTSIDE HANDLE (OPERATION) Check that the entry functions operate normally. OK Entry functions operate normally. NG --> See step 11 OK --> END (FRONT DOOR OUTSIDE HANDLE IS DEFECTIVE)
10. GO TO POWER DOOR LOCK CONTROL SYSTEM. Refer to «PROBLEM SYMPTOMS TABLE»(ref-426152-S04088252372011101200000)
11. REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to «REMOVAL»(ref-426151-S31315461072011101200000)
12. GO TO POWER DOOR LOCK CONTROL SYSTEM (Proceed to Problem Symptoms Table). Refer to «PROBLEM SYMPTOMS TABLE»(ref-426152-S04088252372011101200000)

If the front passenger door entry unlock function does not operate but the entry lock function operates, communication between the vehicle and electrical key transmitter is normal. As a result, the touch sensor circuit can be considered to be faulty (certification ECU (smart key ECU assembly) --> front passenger side outside handle --> front passenger side door electrical key oscillator).

Scheme 211

Scheme 212

Scheme 213

1. CHECK POWER DOOR LOCK OPERATION When the master switch assembly's door control switch is operated, check that the locked doors unlock. Refer to «OPERATION CHECK»(ref-426152-S04340942752011101200000). OK Door locks operate normally. NG --> See step 10 OK: Go to next step
2. READ VALUE USING TECHSTREAM (DOOR LOCK POSITION SWITCH) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Main Body / Data List. Read the Data List according to the display on the Techstream. MAIN BODY (MAIN BODY ECU (INSTRUMENT PANEL JUNCTION BLOCK)) Tester Display Measurement Item/Range Normal Condition Diagnostic Note P-Door Lock Pos SW Front passenger side door lock position switch signal/ON or OFF ON: Front passenger side door is unlocked OFF: Front passenger side door is locked - OK On the Techstream screen, the display changes between ON and OFF as shown in the chart above. Result Result Proceed to OK A NG B ( «PROBLEM SYMPTOMS TABLE»(ref-426152-S04088252372011101200000) "Front Passenger Door LOCK/UNLOCK Functions do not Operate" in the problem symptoms table) B --> See step 12 A: Go to next step
3. READ VALUE USING TECHSTREAM Enter the following menus: Body Electrical / Smart Key / Data List. Read the Data List according to the display on the Techstream. SMART KEY (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)) Tester Display Measurement Item/Range Normal Condition Diagnostic Note P-Door Touch Sensor Front passenger side door touch sensor/ON or OFF ON: Sensor is touched OFF: Sensor is not touched - OK On the Techstream screen, the item changes between ON and OFF according to the chart above. NG --> See step 4 OK --> See step 11
4. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU - DOOR ELECTRICAL KEY OSCILLATOR) Disconnect the certification ECU (smart key ECU assembly) connector. Disconnect the door electrical key oscillator connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition E36-6 (SEL2) - S2-4 (SEL) Always Below 1 ohms E36-23 (SEN2) - S2-6 (SENS) Always Below 1 ohms E36-6 (SEL2) - Body ground Always 10 kohms or higher E36-23 (SEN2) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
5. CHECK HARNESS AND CONNECTOR (DOOR ELECTRICAL KEY OSCILLATOR - FRONT DOOR OUTSIDE HANDLE) Disconnect the front door outside handle connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition S1-6 (SGT) - S2-2 (SGT) Always Below 1 ohms S1-6 (SGT) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
6. REPLACE DOOR ELECTRICAL KEY OSCILLATOR Replace the door electrical key oscillator. Refer to «REMOVAL»(ref-426151-S27995486192011101200000). NEXT: Go to next step
7. CHECK DOOR ELECTRICAL KEY OSCILLATOR (OPERATION) Check that the entry functions operate normally. OK Entry functions operate normally. NG --> See step 8 OK --> END (DOOR ELECTRICAL KEY OSCILLATOR IS DEFECTIVE)
8. REPLACE FRONT DOOR OUTSIDE HANDLE Replace the front door outside handle (front passenger side). Refer to «REMOVAL»(ref-426151-S15671098622011101200000). NEXT: Go to next step
9. CHECK FRONT DOOR OUTSIDE HANDLE (OPERATION) Check that the entry functions operate normally. OK Entry functions operate normally. NG --> See step 11 OK --> END (FRONT DOOR OUTSIDE HANDLE IS DEFECTIVE)
10. GO TO POWER DOOR LOCK CONTROL SYSTEM. Refer to «PROBLEM SYMPTOMS TABLE»(ref-426152-S04088252372011101200000)
11. REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to «REMOVAL»(ref-426151-S31315461072011101200000)
12. GO TO POWER DOOR LOCK CONTROL SYSTEM (Proceed to Problem Symptoms Table). Refer to «PROBLEM SYMPTOMS TABLE»(ref-426152-S04088252372011101200000)

When the driver door entry lock and unlock functions do not operate, one of the following may be malfunctioning: 1) power door lock control system, 2) driver side door electrical key oscillator, or 3) certification ECU (smart key ECU assembly).

Scheme 214

Scheme 215

Scheme 216

Scheme 217

1. CHECK POWER DOOR LOCK OPERATION When the master switch assembly's door control switch is operated, check that the doors unlock and lock according to switch operation. Refer to «OPERATION CHECK»(ref-426152-S04340942752011101200000). OK Door locks operate normally. NG --> See step 10 OK: Go to next step
2. READ VALUE USING TECHSTREAM Connect the Techstream to the DLC3 Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Smart Key / Data List. Read the Data List according to the display on the Techstream. SMART KEY (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)) Tester Display Measurement Item/Range Normal Condition Diagnostic Note D-Door Touch Sensor Driver side door touch sensor/ON or OFF ON: Sensor is touched OFF: Sensor is not touched - D-Door Trigger SW Driver side door lock switch/ON or OFF ON: Switch is touched OFF: Switch is not touched - OK On the Techstream screen, each item changes between ON and OFF according to the chart above. NG --> See step 12 OK: Go to next step
3. CHECK WAVE ENVIRONMENT Bring the electrical key transmitter near the driver door outside handle, and perform a driver door entry lock and unlock operation check. NOTE: If the key is brought within 0.2 m (0.656 ft.) of the door handle, communication is not possible. HINT: When the electrical key transmitter is brought near the driver door outside handle, the possibility of wave interference decreases, and it can be determined if wave interference is causing the problem symptom. If the operation is normal, the possibility of wave interference is high. Also, added vehicle components may cause wave interference. If installed, remove them and perform the operation check. OK Entry functions operate normally. NG --> See step 4 OK --> AFFECTED BY WAVE INTERFERENCE
4. PERFORM KEY DIAGNOSTIC MODE INSPECTION Diagnostic mode inspection Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Smart Key / Utility / Communication Check (Key Diag Mode) / Overhead + Driver Side. When the electrical key transmitter is in the position shown in the illustration, check that the wireless door lock buzzer sounds. HINT: If the buzzer sounds, it can be determined that the driver seat outside transmitter is operating normally. OK Wireless door lock buzzer sounds. NG --> See step 5 OK --> See step 11
5. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU - DOOR ELECTRICAL KEY OSCILLATOR) Disconnect the certification ECU (smart key ECU assembly) connector. Disconnect the door electrical key oscillator connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition E36-5 (SEL1) - T2-4 (SEL) Always Below 1 ohms E36-33 (CLG1) - T2-10 (CLG) Always Below 1 ohms E36-34 (CG1B) - T2-5 (CLGB) Always Below 1 ohms E36-5 (SEL1) - Body ground Always 10 kohms or higher E36-33 (CLG1) - Body ground Always 10 kohms or higher E36-34 (CG1B) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
6. CHECK HARNESS AND CONNECTOR (DOOR ELECTRICAL KEY OSCILLATOR - FRONT DOOR OUTSIDE HANDLE) Disconnect the front door outside handle connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition T1-2 (ANT2) - T2-8 (ANT2) Always Below 1 ohms T1-5 (ANT1) - T2-3 (ANT1) Always Below 1 ohms T1-2 (ANT2) - Body ground Always 10 kohms or higher T1-5 (ANT1) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
7. CHECK HARNESS AND CONNECTOR (DOOR ELECTRICAL KEY OSCILLATOR - BATTERY AND BODY GROUND) Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition T2-1 (B) - T2-7 (GND) Always 11 to 14 V NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
8. REPLACE DOOR ELECTRICAL KEY OSCILLATOR Replace the door electrical key oscillator. Refer to «REMOVAL»(ref-426151-S27995486192011101200000). NEXT: Go to next step
9. CHECK DOOR ELECTRICAL KEY OSCILLATOR (OPERATION) Check that the entry functions operate normally. OK Entry functions operate normally. NG --> See step 11 OK --> END (DOOR ELECTRICAL KEY OSCILLATOR IS DEFECTIVE)
10. GO TO POWER DOOR LOCK CONTROL SYSTEM. Refer to «PROBLEM SYMPTOMS TABLE»(ref-426152-S04088252372011101200000)
11. REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to «REMOVAL»(ref-426151-S31315461072011101200000)
12. REPLACE FRONT DOOR OUTSIDE HANDLE. Refer to «REMOVAL»(ref-426151-S15671098622011101200000)

When the front passenger door entry lock and unlock functions do not operate, one of the following may be malfunctioning: 1) power door lock control system, 2) door electrical key oscillator front passenger side, or 3) certification ECU (smart key ECU assembly).

Scheme 218

Scheme 219

Scheme 220

Scheme 221

1. CHECK POWER DOOR LOCK OPERATION When the master switch assembly's door control switch is operated, check that the doors unlock and lock according to switch operation. OK Door locks operate normally. NG --> See step 10 OK: Go to next step
2. READ VALUE USING TECHSTREAM Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Smart Key / Data List. Read the Data List according to the display on the Techstream. SMART KEY (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)) Tester Display Measurement Item/Range Normal Condition Diagnostic Note P-Door Touch Sensor Front passenger side door touch sensor/ON or OFF ON: Sensor is touched OFF: Sensor is not touched - P-Door Trigger SW Front passenger side door lock switch/ON or OFF ON: Switch is touched OFF: Switch is not touched - OK On the Techstream screen, each item changes between ON and OFF according to the chart above. NG --> See step 12 OK: Go to next step
3. CHECK WAVE ENVIRONMENT Bring the electrical key transmitter near the front passenger door outside handle, and perform a front passenger door entry lock and unlock operation check. NOTE: If the key is brought within 0.2 m (0.656 ft.) of the door handle, communication is not possible. HINT: When the electrical key transmitter is brought near the front passenger door outside handle, the possibility of wave interference decreases, and it can be determined if wave interference is causing the problem symptom. If the operation is normal, the possibility of wave interference is high. Also, added vehicle components may cause wave interference. If installed, remove them and perform the operation check. OK Entry functions operate normally. NG --> See step 4 OK --> AFFECTED BY WAVE INTERFERENCE
4. PERFORM KEY DIAGNOSTIC MODE INSPECTION Diagnostic mode inspection Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Smart Key / Utility / Communication Check (Key Diag Mode) / Overhead + Passenger Side. When the electrical key transmitter is in the position shown in the illustration, check that the wireless door lock buzzer sounds. HINT: If the buzzer sounds, it can be determined that the front passenger seat outside transmitter is operating normally. OK Wireless door lock buzzer sounds. NG --> See step 5 OK --> See step 11
5. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU - DOOR ELECTRICAL KEY OSCILLATOR) Disconnect the certification ECU (smart key ECU assembly) connector. Disconnect the door electrical key oscillator connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition E36-6 (SEL2) - S2-4 (SEL) Always Below 1 ohms E36-35 (CLG2) - S2-10 (CLG) Always Below 1 ohms E36-36 (CG2B) - S2-5 (CLGB) Always Below 1 ohms E36-6 (SEL2) - Body ground Always 10 kohms or higher E36-35 (CLG2) - Body ground Always 10 kohms or higher E36-36 (CG2B) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
6. CHECK HARNESS AND CONNECTOR (DOOR ELECTRICAL KEY OSCILLATOR - FRONT DOOR OUTSIDE HANDLE) Disconnect the front door outside handle connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition S1-2 (ANT2) - S2-8 (ANT2) Always Below 1 ohms S1-5 (ANT1) - S2-3 (ANT1) Always Below 1 ohms S1-2 (ANT2) - Body ground Always 10 kohms or higher S1-5 (ANT1) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
7. CHECK HARNESS AND CONNECTOR (DOOR ELECTRICAL KEY OSCILLATOR - BATTERY AND BODY GROUND) Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition S2-1 (B) - S2-7 (GND) Always 11 to 14 V NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
8. REPLACE DOOR ELECTRICAL KEY OSCILLATOR Replace the door electrical key oscillator. Refer to «REMOVAL»(ref-426151-S27995486192011101200000). NEXT: Go to next step
9. CHECK DOOR ELECTRICAL KEY OSCILLATOR (OPERATION) Check that the entry functions operate normally. OK Entry functions operate normally. NG --> See step 11 OK --> END (DOOR ELECTRICAL KEY OSCILLATOR IS DEFECTIVE)
10. GO TO POWER DOOR LOCK CONTROL SYSTEM. Refer to «PROBLEM SYMPTOMS TABLE»(ref-426152-S04088252372011101200000)
11. REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to «REMOVAL»(ref-426151-S31315461072011101200000)
12. REPLACE FRONT DOOR OUTSIDE HANDLE. Refer to «REMOVAL»(ref-426151-S15671098622011101200000)

If the driver door entry lock function does not operate but the entry unlock function operates, communication between the vehicle and electrical key transmitter is normal. As a result, the entry lock switch circuit can be considered to be faulty (certification ECU (smart key ECU assembly) --> driver side outside handle (entry lock switch) --> driver side door electrical key oscillator).

Scheme 222

Scheme 223

Scheme 224

Scheme 225

1. CHECK POWER DOOR LOCK OPERATION When the master switch assembly's door control switch is operated, check that the doors lock. Refer to «OPERATION CHECK»(ref-426152-S04340942752011101200000). OK Door locks operate normally. NG --> See step 9 OK: Go to next step
2. READ VALUE USING TECHSTREAM (DOOR LOCK POSITION SWITCH) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Main Body / Data List. Read the Data List according to the display on the Techstream. MAIN BODY (MAIN BODY ECU (INSTRUMENT PANEL JUNCTION BLOCK)) Tester Display Measurement Item/Range Normal Condition Diagnostic Note D-Door Lock Pos SW Driver side door lock position switch signal/ON or OFF ON: Driver side door is unlocked OFF: Driver side door is locked - OK On the Techstream screen, the display changes between ON and OFF as shown in the chart above. Result Result Proceed to OK A NG B ( «PROBLEM SYMPTOMS TABLE»(ref-426152-S04088252372011101200000) "Driver Door LOCK/UNLOCK Functions do not Operate" in the problem symptoms table) B --> See step 12 A: Go to next step
3. READ VALUE USING TECHSTREAM (OUTSIDE HANDLE) Enter the following menus: Body Electrical / Smart Key / Data List. Read the Data List according to the display on the Techstream. SMART KEY (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)) Tester Display Measurement Item/Range Normal Condition Diagnostic Note D-Door Trigger SW Driver side door lock switch/ON or OFF ON: Switch is touched OFF: Switch is not touched - OK On the Techstream screen, the item changes between ON and OFF according to the chart above. NG --> See step 4 OK --> See step 11
4. CHECK HARNESS AND CONNECTOR (FRONT DOOR OUTSIDE HANDLE - DOOR ELECTRICAL KEY OSCILLATOR) Disconnect the front door outside handle. Disconnect the door electrical key oscillator connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition T2-9 (TRG-) - T1-1 (TRG-) Always Below 1 ohms T2-9 (TRG-) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
5. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU - FRONT DOOR OUTSIDE HANDLE) Disconnect the certification ECU (smart key ECU assembly) connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition E36-3 (TSW1) - T1-3 (TRG+) Always Below 1 ohms E36-3 (TSW1) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
6. INSPECT FRONT DOOR OUTSIDE HANDLE (for Driver Side) Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition T1-1 (TRG-) - T1-3 (TRG+) Lock switch not pushed 10 kohms or higher T1-1 (TRG-) - T1-3 (TRG+) Lock switch pushed Below 1 ohms NG --> See step 10 OK: Go to next step
7. REPLACE DOOR ELECTRICAL KEY OSCILLATOR Replace the door electrical key oscillator. Refer to «REMOVAL»(ref-426151-S27995486192011101200000). NEXT: Go to next step
8. CHECK DOOR ELECTRICAL KEY OSCILLATOR (OPERATION) Check that the entry functions operate normally. OK Entry functions operate normally. NG --> See step 11 OK --> END (DOOR ELECTRICAL OSCILLATOR IS DEFECTIVE)
9. GO TO POWER DOOR LOCK CONTROL SYSTEM. Refer to «PROBLEM SYMPTOMS TABLE»(ref-426152-S04088252372011101200000)
10. REPLACE FRONT DOOR OUTSIDE HANDLE. Refer to «REMOVAL»(ref-426151-S15671098622011101200000)
11. REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to «REMOVAL»(ref-426151-S31315461072011101200000)
12. GO TO POWER DOOR LOCK CONTROL SYSTEM (Proceed to Problem Symptoms Table). Refer to «PROBLEM SYMPTOMS TABLE»(ref-426152-S04088252372011101200000)

If the front passenger door entry lock function does not operate but the entry unlock function operates, communication between the vehicle and electrical key transmitter is normal. As a result, the entry lock switch circuit can be considered to be faulty (certification ECU (smart key ECU assembly) --> passenger side outside handle (entry lock switch) --> front passenger side door electrical key oscillator).

Scheme 226

Scheme 227

Scheme 228

Scheme 229

1. CHECK POWER DOOR LOCK OPERATION When the master switch assembly's door control switch is operated, check that the doors lock. Refer to «OPERATION CHECK»(ref-426152-S04340942752011101200000). OK Door locks operate normally. NG --> See step 10 OK: Go to next step
2. READ VALUE USING TECHSTREAM (DOOR LOCK POSITION SWITCH) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Main Body / Data List. Read the Data List according to the display on the Techstream. MAIN BODY (MAIN BODY ECU (INSTRUMENT PANEL JUNCTION BLOCK)) Tester Display Measurement Item/Range Normal Condition Diagnostic Note P-Door Lock Pos SW Front passenger side door lock position switch signal/ON or OFF ON: Front passenger side door is unlocked OFF: Front passenger side door is locked - OK On the Techstream screen, the display changes between ON and OFF as shown in the chart above. Result Result Proceed to OK A NG B ( «PROBLEM SYMPTOMS TABLE»(ref-426152-S04088252372011101200000) "Front Passenger Door LOCK/UNLOCK Functions do not Operate" in the problem symptoms table) B --> See step 11 A: Go to next step
3. READ VALUE USING TECHSTREAM (OUTSIDE HANDLE) Enter the following menus: Body Electrical / Smart Key / Data List. Read the Data List according to the display on the Techstream. SMART KEY (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)) Tester Display Measurement Item/Range Normal Condition Diagnostic Note P-Door Trigger SW Front passenger side door lock switch/ON or OFF ON: Switch is touched OFF: Switch is not touched - OK On the Techstream screen, the item changes between ON and OFF according to the chart above. NG --> See step 4 OK --> REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)
4. CHECK HARNESS AND CONNECTOR (FRONT DOOR OUTSIDE HANDLE - DOOR ELECTRICAL KEY OSCILLATOR) Disconnect the front door outside handle connector. Disconnect the door electrical key oscillator connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition S2-9 (TRG-) - S1-1 (TRG-) Always Below 1 ohms S2-9 (TRG-) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
5. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU - FRONT DOOR OUTSIDE HANDLE) Disconnect the certification ECU (smart key ECU assembly) connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition E36-4 (TSW2) - S1-3 (TRG+) Always Below 1 ohms E36-4 (TSW2) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
6. INSPECT FRONT DOOR OUTSIDE HANDLE (for Front Passenger Side) Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition S1-1 (TRG-) - S1-3 (TRG+) Lock switch not pushed 10 kohms or higher S1-1 (TRG-) - S1-3 (TRG+) Lock switch pushed Below 1 ohms NG --> See step 9 OK: Go to next step
7. REPLACE DOOR ELECTRICAL KEY OSCILLATOR Replace the door electrical key oscillator. Refer to «REMOVAL»(ref-426151-S27995486192011101200000). NEXT: Go to next step
8. CHECK DOOR ELECTRICAL KEY OSCILLATOR (OPERATION) Check that the entry functions operate normally. OK Entry functions operate normally. NG --> REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) OK --> END (DOOR ELECTRICAL KEY OSCILLATOR IS DEFECTIVE)
9. REPLACE FRONT DOOR OUTSIDE HANDLE. Refer to «REMOVAL»(ref-426151-S15671098622011101200000)
10. GO TO POWER DOOR LOCK CONTROL SYSTEM. Refer to «PROBLEM SYMPTOMS TABLE»(ref-426152-S04088252372011101200000)
11. GO TO POWER DOOR LOCK CONTROL SYSTEM (Proceed to Problem Symptoms Table). Refer to «PROBLEM SYMPTOMS TABLE»(ref-426152-S04088252372011101200000)

If the indoor electrical key oscillator does not recognize a key, either of the following may be the cause: 1) communication between the indoor electrical key oscillator (front floor) and electrical key transmitter cannot be performed; or 2) communication between the indoor electrical key oscillator (rear floor) and electrical key transmitter cannot be performed.

Scheme 230

When the luggage compartment door entry unlock function does not operate, one of the following may be the cause: 1) luggage compartment door opener outer switch malfunction; 2) communication malfunction between the outside electrical key oscillator and electrical key transmitter; 3) the main body ECU (instrument panel junction block) receives the luggage compartment door opener outer switch ON signal, but is unable to send the signal to the certification ECU (smart key ECU assembly) through CAN communication; or 4) certification ECU (smart key ECU assembly) malfunction.

Scheme 231

Scheme 232

Scheme 233

Scheme 234

Scheme 235

Scheme 236

Scheme 237

1. CHECK SMART KEY SYSTEM (Entry Function) Check that entry lock and unlock functions can be operated at each door. OK Entry lock and unlock functions operate normally. NG --> GO TO «PROBLEM SYMPTOMS TABLE»(ref-426152-S04088252372011101200000) OTHER PROBLEM (PROBLEM SYMPTOMS TABLE) OK: Go to next step
2. READ VALUE USING TECHSTREAM (LUGGAGE COMPARTMENT DOOR OPENER SWITCH) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Smart Key / Data List. Read the Data List according to the display on the Techstream. SMART KEY (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)) Tester Display Measurement Item/Range Normal Condition Diagnostic Note Tr/B-Door Unlock SW Luggage compartment door opener switch / ON or OFF ON: Luggage compartment door opener outer switch is pushed OFF: Luggage compartment door opener outer switch is not pushed - OK On the Techstream screen, the item changes between ON and OFF according to above chart. NG --> See step 11 OK: Go to next step
3. PERFORM ACTIVE TEST USING TECHSTREAM Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Main Body / Active Test. Perform the Active Test according to the display on the Techstream. MAIN BODY (MAIN BODY ECU (INSTRUMENT PANEL JUNCTION BLOCK)) Tester Display Test Part Control Range Diagnostic Note Trunk and Back-door Open Luggage compartment open switch ON/OFF - OK Luggage compartment door lock motor operates according to the Techstream operation. NG --> See step 9 OK: Go to next step
4. CHECK WAVE ENVIRONMENT Bring the electrical key transmitter near the outside electrical key oscillator (luggage compartment), and perform an entry luggage compartment open function check. NOTE: If the key is brought within 0.2 m (0.656 ft) of the rear bumper, communication is not possible. HINT: When the electrical key transmitter is brought near the outside electrical key oscillator, the possibility of wave interference decreases, and it can be determined if wave interference is causing the problem symptom. If the operation is normal, the possibility of wave interference is high. Also, added vehicle components may cause wave interference. If installed, remove them and perform the operation check. OK Entry functions operate normally. NG --> See step 5 OK --> AFFECTED BY WAVE INTERFERENCE
5. PERFORM KEY DIAGNOSTIC MODE INSPECTION Diagnostic mode inspection (outside electrical key oscillator (luggage compartment)) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Smart Key / Utility / Communication Check (Key Diag Mode) / Overhead + Luggage (outside). When the electrical key transmitter is held at the same height as the rear bumper upper surface aligning it with the center of the rear of the vehicle, check that the wireless door lock buzzer sounds. HINT: If the buzzer sounds, it can be determined that the luggage compartment exterior transmitter is operating normally. OK Wireless door lock buzzer sounds. NG --> See step 6 OK --> See step 14
6. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU - OUTSIDE ELECTRICAL KEY OSCILLATOR) Disconnect the certification ECU (smart key ECU assembly) connector. Disconnect the outside electrical key oscillator connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition E36-32 (CG8B) - M13-2 (CLGB) Always Below 1 ohms E36-31 (CLG8) - M13-1 (CLG5) Always Below 1 ohms E36-32 (CG8B) - Body ground Always 10 kohms or higher E36-31 (CLG8) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
7. REPLACE OUTSIDE ELECTRICAL KEY OSCILLATOR (Luggage Compartment) Replace the outside electrical key oscillator (luggage compartment). Refer to «REMOVAL»(ref-426151-S31851087142011101200000). NEXT: Go to next step
8. CHECK OUTSIDE ELECTRICAL KEY OSCILLATOR (OPERATION) Check that the entry functions operate normally. OK Entry functions operate normally. NG --> See step 14 OK --> END (OUTSIDE ELECTRICAL KEY OSCILLATOR IS DEFECTIVE)
9. INSPECT LUGGAGE COMPARTMENT DOOR LOCK ASSEMBLY Remove the luggage compartment door lock assembly. Refer to «REMOVAL»(ref-426153-S04316556312011101200000). Check the operation of the door lock motor. Move the door lock to the lock position. Apply battery voltage to the door lock motor and check the operation of the door lock motor. OK Measurement Condition Specified Condition Battery positive (+) --> Terminal 1 Battery negative (-) --> Terminal 2 Unlock Check the operation of the door courtesy switch. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 2 - 3 Unlock Below 1 ohms 2 - 3 Lock 10 kohms or higher NG --> See step 15 OK: Go to next step
10. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - LUGGAGE COMPARTMENT DOOR LOCK) Luggage compartment door lock motor: Disconnect the main body ECU (instrument panel junction block) connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition E50-1 (TR+) - L18-1 (ACT+) Always Below 1 ohms E50-1 (TR+) - Body ground Always 10 kohms or higher Luggage compartment door courtesy switch: Disconnect the instrument panel junction block connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition L18-2 (E) - Body ground Always Below 1 ohms 2A-7 (LGCY) - L18-3 (D+) Always Below 1 ohms 2A-7 (LGCY) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> REPLACE MAIN BODY ECU (INSTRUMENT PANEL JUNCTION BLOCK)
11. INSPECT LUGGAGE COMPARTMENT DOOR OPENER OUTER SWITCH Disconnect the luggage compartment door opener outer switch connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition 1 - 2 Luggage compartment door opener outer switch not pushed (OFF) 10 kohms or higher 1 - 2 Luggage compartment door opener outer switch pushed (ON) Below 1 ohms NG --> See step 13 OK: Go to next step
12. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU - LUGGAGE COMPARTMENT DOOR OPENER SWITCH) Disconnect the certification ECU (smart key ECU assembly) connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition L26-1 - Body ground Always Below 1 ohms L26-2 - E36-7 (TSW5) Always Below 1 ohms L26-2 - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 14
13. REPLACE LUGGAGE COMPARTMENT DOOR OPENER OUTER SWITCH. Refer to «REMOVAL»(ref-426084-S00536097782011101200000)
14. REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to «REMOVAL»(ref-426151-S31315461072011101200000)
15. REPLACE LUGGAGE COMPARTMENT DOOR LOCK ASSEMBLY. Refer to «REMOVAL»(ref-426153-S04316556312011101200000)

If the key luggage compartment lock-in prevention function does not operate, either of the following may be the cause: 1) communication between the indoor electrical key oscillator (luggage compartment) and electrical key transmitter cannot be performed; or 2) a malfunction in the certification ECU (smart key ECU assembly).

Scheme 238

Scheme 239

1. CHECK SMART KEY SYSTEM (Entry Function) Check that the luggage compartment door entry unlock function operates. Result Result Proceed to Luggage compartment door entry unlock function does not operate A Luggage compartment door entry unlock function operates B A --> See step 7 B: Go to next step
2. CHECK WAVE ENVIRONMENT Bring the electrical key transmitter near the indoor electrical key oscillator (luggage compartment), and check that the key luggage compartment lock-in prevention function operates. NOTE: If the key is brought within 0.2 m (0.656 ft.) of the indoor electrical key oscillator, communication is not possible. HINT: When the electrical key transmitter is brought near the indoor electrical key oscillator (luggage compartment), the possibility of wave interference decreases, and it can be determined if wave interference is causing the problem symptom. If the operation is normal, the possibility of wave interference is high. Also, added vehicle components may cause wave interference. If installed, remove them and perform the operation check. OK Key lock-in prevention function operates normally. NG --> See step 3 OK --> AFFECTED BY WAVE INTERFERENCE
3. PERFORM KEY DIAGNOSTIC MODE INSPECTION Diagnostic mode inspection (indoor electrical key oscillator) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Smart Key / Utility / Communication Check (Key Diag Mode) / Overhead + Luggage (inside). When the electrical key transmitter is held at the same height as the rear bumper upper surface aligning it with the center of the rear of the vehicle, check that the wireless door lock buzzer sounds. HINT: If the buzzer sounds, it can be determined that the luggage compartment interior transmitter is operating normally. OK Wireless door lock buzzer sounds. NG --> See step 4 OK --> See step 8
4. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU - INDOOR ELECTRICAL KEY OSCILLATOR) Disconnect the certification ECU (smart key ECU assembly) connector. Disconnect the indoor electrical key oscillator connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition E36-16 (CG7B) - M17-3 (CLGB) Always Below 1 ohms E36-15 (CLG7) - M17-1 (CLG6) Always Below 1 ohms E36-16 (CG7B) - Body ground Always 10 kohms or higher E36-15 (CLG7) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
5. REPLACE INDOOR ELECTRICAL KEY OSCILLATOR (Luggage Compartment) Replace the indoor electrical key oscillator (luggage compartment). Refer to «REMOVAL»(ref-426151-S04265652962011101200000). NEXT: Go to next step
6. CHECK INDOOR ELECTRICAL KEY OSCILLATOR (OPERATION) Check that the entry functions operate normally. OK Entry functions operate normally. NG --> See step 8 OK --> END (INDOOR ELECTRICAL KEY OSCILLATOR IS DEFECTIVE)
7. GO TO OTHER PROBLEM. Refer to «Luggage Compartment Door Entry Unlock Function does not Operate when Key is Outside Luggage Compartment»(ref-426154-S21026776372011101200000)
8. REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to «REMOVAL»(ref-426151-S31315461072011101200000)

The smart key system uses the combination meter buzzer to perform various vehicle interior warnings. When each warning's conditions are met, the certification ECU (smart key ECU assembly) sends a buzzer signal to the meter ECU, and the combination meter buzzer sounds.

See also:
• DTC B1242: Wireless Door Lock Tuner Circuit Malfunction
• REPLACEMENT