DESCRIPTION
The certification ECU generates a request signal and transmits the signal to the front door outside handle assembly LH (driver side electrical key antenna) at intervals of 250 ms. For the front door outside handle assembly LH (driver side electrical key antenna) to detect when the key is brought close to the vehicle, a signal requesting a response from the key is transmitted within approximately 1.0 m (3.28 ft.) of the driver side door at intervals of 250 ms. DTC B27A1 is stored by the certification ECU when an open circuit is detected between the certification ECU and front door outside handle assembly LH (driver side electrical key antenna) (between terminals CLG1 and ANT1, or terminals CG1B and ANT2).
| DTC Code | DTC Detection Condition | Trouble Area | DTC Output Confirmation Operation |
|---|---|---|---|
| B27A1 | An open circuit is detected in the circuit between the certification ECU and front door outside handle assembly LH (CLG1 - ANT1, CG1B - ANT2) (This is detected by the malfunction detection circuit in the certification ECU) (1 trip detection logic*). | Harness or connector Front door outside handle assembly LH Certification ECU | Any time |
- *: Only output while a malfunction is present.
| Vehicle Condition when Malfunction Detected | Fail-safe Operation when Malfunction Detected |
|---|---|
| Entry lock/unlock operation cannot be performed for driver side door |
VEHICLE CONDITION AND FAIL-SAFE OPERATION WHEN MALFUNCTION DETECTED
| DTC Code | Data List and Active Test |
|---|---|
| B27A1 | Key diagnostic mode can be used to perform troubleshooting |
RELATED DATA LIST AND ACTIVE TEST
Scheme 159
The certification ECU generates a request signal and transmits the signal to the front door outside handle assembly RH (front passenger side electrical key antenna) at intervals of 250 ms. For the front door outside handle assembly RH (front passenger side electrical key antenna) to detect when the key is brought close to the vehicle, a signal requesting a response from the key is transmitted within approximately 1.0 m (3.28 ft.) of the front passenger side door at intervals of 250 ms. DTC B27A2 is stored by the certification ECU when an open circuit is detected between the certification ECU and front door outside handle assembly RH (front passenger side electrical key antenna) (between terminals CLG2 and ANT1, or terminals CG2B and ANT2).
| DTC Code | DTC Detection Condition | Trouble Area | DTC Output Confirmation Operation |
|---|---|---|---|
| B27A2 | An open circuit is detected in the circuit between the certification ECU and front door outside handle assembly RH (CLG2 - ANT1, CG2B - ANT2) (1 trip detection logic*). | Harness or connector Front door outside handle assembly RH Certification ECU | Any time |
- *: Only output while a malfunction is present.
| Vehicle Condition when Malfunction Detected | Fail-safe Operation when Malfunction Detected |
|---|---|
| Entry lock/unlock operation cannot be performed for front passenger side door |
VEHICLE CONDITION AND FAIL-SAFE OPERATION WHEN MALFUNCTION DETECTED
| DTC Code | Data List and Active Test |
|---|---|
| B27A2 | Key diagnostic mode can be used to perform troubleshooting |
RELATED DATA LIST AND ACTIVE TEST
Scheme 160
The certification ECU generates a request signal and transmits the signal to the indoor No. 1 electrical key antenna assembly (front floor). For the indoor No. 1 electrical key antenna assembly (front floor) to detect when the key is inside the vehicle, the signal from the certification ECU requesting a response from the key is transmitted inside the vehicle. DTC B27A5 is stored by the certification ECU when an open circuit is detected between the certification ECU and indoor No. 1 electrical key antenna assembly (front floor) (between terminals CLG5 and CLG3, or terminals CG5B and CLGB).
| DTC Code | DTC Detection Condition | Trouble Area | DTC Output Confirmation Operation |
|---|---|---|---|
| B27A5 | An open circuit is detected in the circuit between the certification ECU and indoor No. 1 electrical key antenna assembly (front floor) (CLG5 - CLG3, CG5B - CLGB) (1 trip detection logic*). | Harness or connector Indoor No. 1 electrical key antenna assembly (front floor) Certification ECU | Any time |
- *: Only output while a malfunction is present.
| Vehicle Condition when Malfunction Detected | Fail-safe Operation when Malfunction Detected |
|---|---|
| When key is in front seat area: Power source mode does not change when engine switch pressed Key locked inside vehicle |
VEHICLE CONDITION AND FAIL-SAFE OPERATION WHEN MALFUNCTION DETECTED
| DTC Code | Data List and Active Test |
|---|---|
| B27A5 | Key diagnostic mode can be used to perform troubleshooting |
RELATED DATA LIST AND ACTIVE TEST
Scheme 161
The certification ECU generates a request signal and transmits the signal to the indoor No. 2 electrical key antenna assembly (rear floor). For the indoor No. 2 electrical key antenna assembly (rear floor) to detect when the key is inside the vehicle, the signal from the certification ECU requesting a response from the key is transmitted inside the vehicle. DTC B27A6 is stored by the certification ECU when an open circuit is detected between the certification ECU and indoor No. 2 electrical key antenna assembly (rear floor) (between terminals CLG6 and CLG4, or terminals CG6B and CLGB).
| DTC Code | DTC Detection Condition | Trouble Area | DTC Output Confirmation Operation |
|---|---|---|---|
| B27A6 | An open circuit is detected in the circuit between the certification ECU and indoor No. 2 electrical key antenna assembly (rear floor) (CLG6 - CLG4, CG6B - CLGB) (1 trip detection logic*). | Harness or connector Indoor No. 2 electrical key antenna assembly (rear floor) Certification ECU | Any time |
- *: Only output while a malfunction is present.
| Vehicle Condition when Malfunction Detected | Fail-safe Operation when Malfunction Detected |
|---|---|
| When key is in rear seat area: Power source mode does not change when engine switch pressed Key locked inside vehicle |
VEHICLE CONDITION AND FAIL-SAFE OPERATION WHEN MALFUNCTION DETECTED
| DTC Code | Data List and Active Test |
|---|---|
| B27A6 | Key diagnostic mode can be used to perform troubleshooting |
RELATED DATA LIST AND ACTIVE TEST
Scheme 162
The certification ECU generates a request signal and transmits the signal to the indoor No. 3 electrical key antenna assembly (inside luggage). For the indoor No. 3 electrical key antenna assembly (inside luggage) to detect when the key is inside the luggage compartment, the signal from the certification ECU requesting a response from the key is transmitted inside the luggage compartment. DTC B27A7 is stored by the certification ECU when an open circuit is detected between the certification ECU and indoor No. 3 electrical key antenna assembly (inside luggage) (between terminals CLG7 and CLG6, or terminals CG7B and CLGB).
| DTC Code | DTC Detection Condition | Trouble Area | DTC Output Confirmation Operation |
|---|---|---|---|
| B27A7 | An open circuit is detected in the circuit between the certification ECU and indoor No. 3 electrical key antenna assembly (inside luggage) (CLG7 - CLG6, CG7B - CLGB) (1 trip detection logic*). | Harness or connector Indoor No. 3 electrical key antenna assembly (inside luggage) Certification ECU | Any time |
- *: Only output while a malfunction is present.
| Vehicle Condition when Malfunction Detected | Fail-safe Operation when Malfunction Detected |
|---|---|
| When key is in luggage compartment: Power source mode does not change when engine switch is pressed Key becomes locked inside vehicle |
VEHICLE CONDITION AND FAIL-SAFE OPERATION WHEN MALFUNCTION DETECTED
| DTC Code | Data List and Active Test |
|---|---|
| B27A7 | Key diagnostic mode can be used to perform troubleshooting |
RELATED DATA LIST AND ACTIVE TEST
Scheme 163
The certification ECU generates a request signal and transmits the signal to the electrical key antenna (outside luggage). For the electrical key antenna (outside luggage) to detect when the key is brought close to the vehicle, the received request signal is transmitted within approximately 1.0 m (3.28 ft.) of the back door. DTC B27A8 is stored by the certification ECU when an open circuit is detected between the certification ECU and electrical key antenna (outside luggage) (between terminals CLG8 and CLG5, or terminals CG8B and CLGB).
| DTC Code | DTC Detection Condition | Trouble Area | DTC Output Confirmation Operation |
|---|---|---|---|
| B27A8 | An open circuit is detected in the circuit between the certification ECU and electrical key antenna (outside luggage) (CLG8 - CLG5, CG8B - CLGB) (1 trip detection logic*). | Harness or connector Electrical key antenna (outside luggage) Certification ECU | Any time |
- *: Only output while a malfunction is present and the engine switch on is (IG)
| Vehicle Condition when Malfunction Detected | Fail-safe Operation when Malfunction Detected |
|---|---|
| Entry lock/unlock operation cannot be performed for back door |
VEHICLE CONDITION AND FAIL-SAFE OPERATION WHEN MALFUNCTION DETECTED
| DTC Code | Data List and Active Test |
|---|---|
| B27A8 | Key diagnostic mode can be used to perform troubleshooting |
RELATED DATA LIST AND ACTIVE TEST
Scheme 164
When the entry operation and wireless operation of the door lock functions do not operate, a malfunction or wave interference may be occurring in either of the following: 1) the signal communication line between the door control receiver and certification ECU (the line used for entry and wireless operations); or 2) the electrical key transmitter. If the entry lock and wireless lock operations cannot be performed, there may be key malfunctions, wave interference or problems in the communication which is used for the entry and wireless function between the door control receiver and certification ECUs.
Scheme 165
When the wireless operation can be used to lock and unlock the doors, communication between the door control receiver and certification ECU is normal. If the entry luck and unlock functions do not operate, the entry cancel function may be set through the customize function, there may be communication problems between the key and vehicle, or there may be electric wave interference.
If the entry unlock function does not operate for the driver side door only, but the entry lock function operates, the request code is being transmitted properly from the driver side door. In this case, there may be a problem related to the touch sensor (connection between the certification ECU and front door outside handle assembly LH [unlock sensor]).
If the entry unlock function does not operate for the front passenger side door only, but the entry lock function operates, the request code is being transmitted properly from the front passenger side door. In this case, there may be a problem related to the touch sensor (connection between the certification ECU and front door outside handle assembly RH [unlock sensor]).
If the entry lock and unlock functions do not operate for the driver side door only, the request code may not be being transmitted from the driver side door or the front door outside handle assembly LH (touch sensor) may be malfunctioning. If the entry functions for other doors operate properly, communication between the key and door control receiver is normal. In this case, there may be a problem with request code transmission (communication between the certification ECU and front door outside handle assembly LH [driver side electrical key antenna]), or there may be wave interference.
If the entry lock and unlock functions do not operate for the front passenger side door only, the request code may not be being transmitted from the front passenger side door or the front door outside handle assembly RH (touch sensor) may be malfunctioning. If the entry functions for other doors operate properly, communication between the key and door control receiver is normal. In this case, there may be a problem with request code transmission (communication between the certification ECU and front door outside handle assembly RH [front passenger side electrical key antenna]), or there may be wave interference.
If the entry lock function does not operate for the driver side door only, but the entry unlock function operates, the request code is being transmitted properly from the driver side door. In this case, there may be a problem related to the front door outside handle assembly LH (lock sensor) (connection between the certification ECU and front door outside handle assembly LH [lock sensor]).
If the entry lock function does not operate for the front passenger side door only, but the entry unlock function operates, the request code is being transmitted properly from the front passenger side door. In this case, there may be a problem related to the front door outside handle assembly RH (lock sensor) (connection between the certification ECU and front door outside handle assembly RH [lock sensor]).
If code verification cannot be performed in the vehicle interior, there may be problems with the communication between the vehicle (indoor electrical key antenna assembly [front floor], [rear floor] or [inside luggage]) and key, or the certification ECU may be malfunctioning. When the key is brought into the vehicle, verification of the key ID code transmitted from the key and the key ID code stored in the certification ECU is performed. If verification cannot be performed or the codes do not match, the engine switch cannot be turned on (IG) and the engine cannot be started.
When a door is unlocked and the key is brought into the vehicle, the certification ECU activates the indoor electrical key antenna assembly which transmits electric waves to detect the key. If the key recognizes that it is in the detection area, it responds with the key ID code. This information is received by the indoor electrical key antenna and then sent to the certification ECU.
Scheme 166
The smart access system with push-button start uses the buzzer in the combination meter assembly (meter ECU) to perform various vehicle interior warnings. When the conditions of each warning are met, the certification ECU sends a buzzer activation request signal to the combination meter assembly (meter ECU) via CAN communication and the buzzer sounds.
If the entry unlock function does not operate for the back door only, but the entry lock function operates, the request code is being transmitted properly from the back door. In this case, there may be a problem related to the unlock switch (connection between the back door electrical key switch and certification ECU).
Scheme 167
If the entry lock and unlock functions do not operate for the back door only, the request code may not be being transmitted from the back door. If the entry functions for other doors operate properly, communication between the key and door control receiver is normal. In this case, there may be a problem with request code transmission (communication between the certification ECU and electrical key antenna [outside luggage]), or there may be electric wave interference.
If the entry lock function does not operate for the back door only, but the entry unlock function operates, the request code is being transmitted properly from the back door. In this case, there may be a problem related to the lock switch (connection between the back door electrical key switch and certification ECU).