DESCRIPTION
The seat belt control ECU receives information from the driving support ECU through CAN communication and tightens the seat belt by operating the motor in the front seat outer belt assembly RH.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| B2000 | Short to B+ in the seat belt motor RH circuit continues for 1 second or more | Front seat outer belt assembly RH Wire harness (seat belt control ECU - front seat outer belt assembly RH) Seat belt control ECU |
Scheme 256
The seat belt control ECU receives information from the driving support ECU using CAN communication and tightens the seat belt by operating the motor in the front seat outer belt assembly RH.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| B2001 | Short to ground in seat belt motor RH circuit continues for 1 second or more | Front seat outer belt assembly RH Wire harness (seat belt control ECU - front seat outer belt assembly RH) Seat belt control ECU |
The seat belt control ECU receives information from the driving support ECU using CAN communication and tightens the seat by operating the motor in the front seat outer belt assembly RH.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| B2002 | Open in the seat belt motor RH circuit continues for 1 second or more | Front seat outer belt assembly RH Wire harness (seat belt control ECU - front seat outer belt assembly RH) Seat belt control ECU |
The seat belt control ECU receives information from the driving support ECU using CAN communication and tightens the seat belt by operating the motor in the front seat outer belt assembly LH.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| B2005 | Short to B+ in seat belt motor LH circuit continues for 1 second or more | Front seat outer belt assembly LH Wire harness (seat belt control ECU - front seat outer belt assembly LH) Seat belt control ECU |
Scheme 257
The seat belt control ECU receives information from the driving support ECU using CAN communication and tightens the seat belt by operating the motor in the front seat outer belt assembly LH.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| B2006 | Short to ground in seat belt motor LH circuit continues for 1 second or more | Front seat outer belt assembly LH Wire harness (seat belt control ECU - front seat outer belt assembly LH) Seat belt control ECU |
The seat belt control ECU receives information from the driving support ECU using CAN communication and tightens the seat belt by operating the motor in the front seat outer belt assembly LH.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| B2007 | Open in seat belt motor LH circuit continues for 1 second or more | Front seat outer assembly LH Wire harness (seat belt control ECU - front seat outer belt assembly LH) Seat belt control ECU |
The DTCs above are stored during seat belt control ECU self diagnosis.
HINT
- When DTC B2015 or B2016 is detected, DTCs B2026 and B2027 will not be detected.
- When DTC B2020 or B2021 is detected, DTCs B2031 and B2032 will not be detected.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| B2015 | While initial check is running and engine switch is on (IG), seat belt control ECU detects an internal malfunction for 1 second. | Seat belt control ECU |
| B2016 | While initial check is running and engine switch is on (IG), seat belt control ECU detects an internal malfunction for 1 second. | Seat belt control ECU |
| B2020 | While initial check is running and engine switch is on (IG), seat belt control ECU detects an internal malfunction for 1 second. | Seat belt control ECU |
| B2021 | While initial check is running and engine switch is on (IG), seat belt control ECU detects an internal malfunction for 1 second. | Seat belt control ECU |
| B2025 | While initial check is running and engine switch is on (IG), seat belt control ECU detects an internal malfunction for 1 second. | Seat belt control ECU |
| B2026 | While initial check is running and engine switch is on (IG), seat belt control ECU detects an internal malfunction for 1 second. | Seat belt control ECU |
| B2027 | While initial check is running and engine switch is on (IG), seat belt control ECU detects an internal malfunction for 1 second. | Seat belt control ECU |
| B2030 | While initial check is running and engine switch is on (IG), seat belt control ECU detects an internal malfunction for 1 second. | Seat belt control ECU |
| B2031 | While initial check is running and engine switch is on (IG), seat belt control ECU detects an internal malfunction for 1 second. | Seat belt control ECU |
| B2032 | While initial check is running and engine switch is on (IG), seat belt control ECU detects an internal malfunction for 1 second. | Seat belt control ECU |
| B2035 | While initial check is running and engine switch is on (IG), seat belt control ECU detects an internal malfunction for 40 seconds. | Seat belt control ECU |
| B2040 | While initial check is running and engine switch is on (IG), seat belt control ECU detects an internal malfunction for 1 second. | Seat belt control ECU |
| B2041 | While initial check is running and engine switch is on (IG), seat belt control ECU detects an internal malfunction for 1 second. | Seat belt control ECU |
| B2043 | While initial check is running and engine switch is on (IG), seat belt control ECU detects an internal malfunction for 1 second. | Seat belt control ECU |
| B2047 | While initial check is running and engine switch is on (IG), seat belt control ECU detects an internal malfunction for 1 second. | Seat belt control ECU |
The DTCs above are stored during seat belt control ECU self diagnosis.
HINT
- When DTC B2015 or B2016 is detected, DTCs B2026 and B2027 will not be detected.
- When DTC B2020 or B2021 is detected, DTCs B2031 and B2032 will not be detected.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| B2015 | While initial check is running and engine switch is on (IG), seat belt control ECU detects an internal malfunction for 1 second. | Seat belt control ECU |
| B2016 | While initial check is running and engine switch is on (IG), seat belt control ECU detects an internal malfunction for 1 second. | Seat belt control ECU |
| B2020 | While initial check is running and engine switch is on (IG), seat belt control ECU detects an internal malfunction for 1 second. | Seat belt control ECU |
| B2021 | While initial check is running and engine switch is on (IG), seat belt control ECU detects an internal malfunction for 1 second. | Seat belt control ECU |
| B2025 | While initial check is running and engine switch is on (IG), seat belt control ECU detects an internal malfunction for 1 second. | Seat belt control ECU |
| B2026 | While initial check is running and engine switch is on (IG), seat belt control ECU detects an internal malfunction for 1 second. | Seat belt control ECU |
| B2027 | While initial check is running and engine switch is on (IG), seat belt control ECU detects an internal malfunction for 1 second. | Seat belt control ECU |
| B2030 | While initial check is running and engine switch is on (IG), seat belt control ECU detects an internal malfunction for 1 second. | Seat belt control ECU |
| B2031 | While initial check is running and engine switch is on (IG), seat belt control ECU detects an internal malfunction for 1 second. | Seat belt control ECU |
| B2032 | While initial check is running and engine switch is on (IG), seat belt control ECU detects an internal malfunction for 1 second. | Seat belt control ECU |
| B2035 | While initial check is running and engine switch is on (IG), seat belt control ECU detects an internal malfunction for 40 seconds. | Seat belt control ECU |
| B2040 | While initial check is running and engine switch is on (IG), seat belt control ECU detects an internal malfunction for 1 second. | Seat belt control ECU |
| B2041 | While initial check is running and engine switch is on (IG), seat belt control ECU detects an internal malfunction for 1 second. | Seat belt control ECU |
| B2043 | While initial check is running and engine switch is on (IG), seat belt control ECU detects an internal malfunction for 1 second. | Seat belt control ECU |
| B2047 | While initial check is running and engine switch is on (IG), seat belt control ECU detects an internal malfunction for 1 second. | Seat belt control ECU |
If the seat belt control ECU judges that there is a malfunction in its internal circuit as a result of self-diagnosis, or if the power source voltage (+B) is not input to the seat belt control ECU, this DTC will be stored.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| B2036 | Malfunction in seat belt control ECU Power source voltage (+B) is not input to the seat belt control ECU. | Harness or connector PSB fuse Seat belt control ECU |
This DTC is stored when a malfunction in the vehicle stability control system is detected. This circuit consists of the skid control ECU and seat belt control ECU. Signals are sent from the skid control ECU using the CAN communication.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| B2060 | Malfunction in brake control system (vehicle stability control system) is detected | CAN communication system Vehicle stability control system Seat belt control ECU |
This DTC is stored when a malfunction in the vehicle stability control system is detected. This circuit consists of the skid control ECU and seat belt control ECU. Signals are sent from the skid control ECU using the CAN communication.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| B2060 | Malfunction in brake control system (vehicle stability control system) is detected | CAN communication system Vehicle stability control system Seat belt control ECU |
The seat belt control ECU is connected to the main body ECU using CAN communication.
The seat belt control ECU receives vehicle model information from the main body ECU and determines whether the seat belt buckle switch information from the center airbag sensor assembly is for the driver seat or the passenger seat.
DTC B2064 is stored when the CAN communication frame with the main body ECU is normal and communication is available, but the steering wheel position information is not set or varies.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| B2064 | Communication with the main body ECU is normal and received steering wheel position information is not set (three times in succession) | CAN communication system Main body ECU Seat belt control ECU |
The seat belt control ECU is connected to the main body ECU using CAN communication.
The seat belt control ECU receives vehicle model information from the main body ECU and determines whether the seat belt buckle switch information from the center airbag sensor assembly is for the driver seat or the passenger seat.
DTC B2064 is stored when the CAN communication frame with the main body ECU is normal and communication is available, but the steering wheel position information is not set or varies.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| B2064 | Communication with the main body ECU is normal and received steering wheel position information is not set (three times in succession) | CAN communication system Main body ECU Seat belt control ECU |
These DTCs are stored when a malfunction is detected in the driver side buckle switch circuit or passenger side buckle switch circuit.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| B2074 | Malfunction in front seat belt inner LH | Wire harness Front seat inner belt LH assembly Center airbag sensor assembly Seat belt control ECU |
| B2075 | Malfunction in front seat belt inner RH | Wire harness Front seat inner belt RH assembly Occupant classification ECU Center airbag sensor assembly Seat belt control ECU |
Scheme 258
These DTCs are stored when a malfunction is detected in the driver side buckle switch circuit or passenger side buckle switch circuit.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| B2074 | Malfunction in front seat belt inner LH | Wire harness Front seat inner belt LH assembly Center airbag sensor assembly Seat belt control ECU |
| B2075 | Malfunction in front seat belt inner RH | Wire harness Front seat inner belt RH assembly Occupant classification ECU Center airbag sensor assembly Seat belt control ECU |
This DTC is stored when CAN communication between the driving support ECU and skid control ECU (brake actuator) is interrupted.
This circuit consists of the driving support ECU, skid control ECU (brake actuator) and seat belt control ECU. DTC B2085 is stored when the seat belt control ECU detects an interruption in CAN communication between the driving support ECU and skid control ECU (brake actuator).
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| B2085 | The skid control ECU (brake actuator) detects an interruption in CAN communication between the driving support ECU and skid control ECU (brake actuator) for 1 second or more. | CAN Communication system Seat belt control ECU |
This DTC is stored when CAN communication between the driving support ECU and skid control ECU (brake actuator) is interrupted.
This circuit consists of the driving support ECU, skid control ECU (brake actuator) and seat belt control ECU. DTC B2085 is stored when the seat belt control ECU detects an interruption in CAN communication between the driving support ECU and skid control ECU (brake actuator).
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| B2085 | The skid control ECU (brake actuator) detects an interruption in CAN communication between the driving support ECU and skid control ECU (brake actuator) for 1 second or more. | CAN Communication system Seat belt control ECU |
The seat belt control ECU receives collision information from the driving support ECU and skid control ECU via CAN communication, and tightens the seat belt by operating the motor inside the front seat outer belt.
When the driving support ECU detects a malfunction in the dynamic radar cruise control system and pre-collision system, the malfunction information is sent to the seat belt control ECU, which outputs this DTC.
When DTC B2090 is detected, other DTCs are also stored by the driving support ECU (dynamic radar cruise control system and pre-collision system).
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| B2090 | While initial check is running, engine switch is on (IG) and pre-collision system is operating, malfunction is detected in any one system of driving support system, or object recognition camera sensor initial beam axis adjustment has not been performed for 1 second. | Driving support system Seat belt control ECU |
The seat belt control ECU receives collision information from the driving support ECU and skid control ECU via CAN communication, and tightens the seat belt by operating the motor inside the front seat outer belt.
When the driving support ECU detects a malfunction in the dynamic radar cruise control system and pre-collision system, the malfunction information is sent to the seat belt control ECU, which outputs this DTC.
When DTC B2090 is detected, other DTCs are also stored by the driving support ECU (dynamic radar cruise control system and pre-collision system).
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| B2090 | While initial check is running, engine switch is on (IG) and pre-collision system is operating, malfunction is detected in any one system of driving support system, or object recognition camera sensor initial beam axis adjustment has not been performed for 1 second. | Driving support system Seat belt control ECU |
The driving support ECU uses the millimeter wave radar sensor to detect obstacles in front of the vehicle.
Based on this information, the driving support ECU calculates the risk of a collision and operates the pre-collision system when it determines that the risk is high.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| C1A01 | When the engine switch is on (IG), the driving support ECU detects an internal malfunction for approx. 1 second. | Driving support ECU |
The driving support ECU uses the millimeter wave radar sensor to detect obstacles in front of the vehicle.
Based on this information, the driving support ECU calculates the risk of a collision and operates the pre-collision system when it determines that the risk is high.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| C1A01 | When the engine switch is on (IG), the driving support ECU detects an internal malfunction for approx. 1 second. | Driving support ECU |
When a new driving support ECU is installed, it receives vehicle specification information (destination, steering wheel position, 2WD or AWD information, etc.) from the main body ECU, ECM and combination meter assembly and memorizes the information.
DTC C1A02 is stored when the driving support ECU receives the vehicle specification information from the main body ECU and combination meter but cannot record it.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| C1A02 | Inconsistent vehicle specification information between the main body ECU and driving support ECU continues for 1 second or more. | Driving support ECU |
When a new driving support ECU is installed, it receives vehicle specification information (destination, steering wheel position, 2WD or AWD information, etc.) from the main body ECU, ECM and combination meter assembly and memorizes the information.
DTC C1A02 is stored when the driving support ECU receives the vehicle specification information from the main body ECU and combination meter but cannot record it.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| C1A02 | Inconsistent vehicle specification information between the main body ECU and driving support ECU continues for 1 second or more. | Driving support ECU |
The driving support ECU uses the millimeter wave radar sensor to detect obstacles in front of the vehicle.
Based on this information, the driving support ECU sends pre-collision control operation signals.
When the millimeter wave radar sensor is replaced with a new one, it acquires the country specification information from the driving support ECU. Also, when the driving support ECU is replaced with a new one, it receives country specification information from the main body ECU. When country specification information in the sensor, ECU and/or main body ECU do not match, DTC C1A0A is output.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| C1A0A | When the engine switch is on (IG), the country code of the driving support ECU and millimeter wave radar sensor do not match for approx. 1 second. | Millimeter wave radar sensor Main body ECU |
The driving support ECU uses the millimeter wave radar sensor to detect obstacles in front of the vehicle.
Based on this information, the driving support ECU sends pre-collision control operation signals.
When the driving support ECU receives information that there is a malfunction in the millimeter wave radar sensor, DTC C1A10 is stored.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| C1A10 | When the engine switch is on (IG), the country code of the driving support ECU and millimeter wave radar sensor do not match for approx. 1 second. | Millimeter wave radar sensor Driving support ECU |
The driving support ECU uses the millimeter wave radar sensor to detect obstacles in front of the vehicle.
Based on this information, the driving support ECU sends pre-collision control operation signals.
When the vehicle is determined to be driving in a straight line or on a slow curve based on signals from the yaw rate sensor etc., the millimeter wave radar sensor performs a self diagnosis to check if the sensor beam axis is deviated from the vehicle movement direction. When the millimeter wave radar sensor beam axis is deviated, the driving support ECU detects this, and stores DTC C1A11.
After installing a new millimeter wave radar sensor, if the sensor beam axis adjustment is not performed, DTC C1A14 is stored.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| C1A11 | When the engine switch is on (IG), misalignment of the millimeter wave radar sensor is detected for approx. 1 second. | Millimeter wave radar sensor Driving support ECU |
| C1A14 | When the engine switch is on (IG), an unadjusted millimeter wave radar sensor beam axis is detected for approx. 1 second. | Millimeter wave radar sensor Driving support ECU |
The skid control ECU receives vehicle stability signals from the yaw rate sensor and sends the signals to the driving support ECU and ECM. If the skid control ECU detects that the yaw rate sensor is malfunctioning, the skid control ECU sends a malfunction signal to the driving support ECU, and the driving support ECU stores DTC C1A46. Also, when DTC C1A46 is stored, the skid control ECU stores DTC C1435 at the same time.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| C1A46 | When the vehicle speed is 5 km/h (4 mph) or more, a yaw rate sensor malfunction signal is received from the skid control ECU. | Yaw rate sensor Skid control ECU Driving support ECU |
The skid control ECU receives vehicle stability signals from the yaw rate sensor and sends the signals to the driving support ECU and ECM. If the skid control ECU detects that the yaw rate sensor is malfunctioning, the skid control ECU sends a malfunction signal to the driving support ECU, and the driving support ECU stores DTC C1A46. Also, when DTC C1A46 is stored, the skid control ECU stores DTC C1435 at the same time.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| C1A46 | When the vehicle speed is 5 km/h (4 mph) or more, a yaw rate sensor malfunction signal is received from the skid control ECU. | Yaw rate sensor Skid control ECU Driving support ECU |
The skid control ECU receives steering rotation angle information from the steering angle sensor, and sends the information to the driving support ECU through the CAN communication line.
When DTC C1A47 is detected, DTC C1433 is also stored in the "ABS/VSC/TRAC".
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| C1A47 | When the vehicle speed is 50 km/h (31 mph) or more, a steering angle sensor malfunction signal is received from the skid control ECU. | Steering angle sensor Skid control ECU Driving support ECU |
The skid control ECU receives steering rotation angle information from the steering angle sensor, and sends the information to the driving support ECU through the CAN communication line.
When DTC C1A47 is detected, DTC C1433 is also stored in the "ABS/VSC/TRAC".
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| C1A47 | When the vehicle speed is 50 km/h (31 mph) or more, a steering angle sensor malfunction signal is received from the skid control ECU. | Steering angle sensor Skid control ECU Driving support ECU |
The driving support ECU uses the millimeter wave radar sensor to detect obstacles in front of the vehicle.
Based on this information, the driving support ECU sends pre-collision control operation signals.
These DTCs are stored when a communication malfunction occurs between the sensors and ECUs that detect collisions, or between ECUs that perform the pre-collision control.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| U0122 | When the engine switch is on (IG), a communication error between the skid control ECU and the driving support ECU is detected for approx. 1 second. | Skid control ECU CAN communication system Seat belt control ECU Driving support ECU |
| U0123 | When the engine switch is on (IG), a communication error between the yaw rate sensor and the driving support ECU is detected for approx. 1 second. | Yaw rate sensor CAN communication system Driving support ECU |
| U0126 | When the engine switch is on (IG), a communication error between the steering sensor and the driving support ECU is detected for approx. 1 second. | Steering angle sensor CAN communication system Driving support ECU |
| U0140 | While engine switch is on (IG), communication stop between main body ECU and seat belt control ECU continues for 1 second or more. | Main body ECU CAN communication system Seat belt control ECU |
| U0151 | While engine switch is on (IG), communication stop between air bag ECU and seat belt control ECU continues for 1 second or more. | Air bag ECU CAN communication system Seat belt control ECU |
| U1100 | When the engine switch is on (IG), a communication error between the seat belt control ECU and the driving support ECU is detected for approx. 1 second. | Seat belt control ECU CAN communication system Driving support ECU |
The driving support ECU uses the millimeter wave radar sensor to detect obstacles in front of the vehicle.
Based on this information, the driving support ECU sends pre-collision control operation signals.
These DTCs are stored when a communication malfunction occurs between the sensors and ECUs that detect collisions, or between ECUs that perform the pre-collision control.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| U0122 | When the engine switch is on (IG), a communication error between the skid control ECU and the driving support ECU is detected for approx. 1 second. | Skid control ECU CAN communication system Seat belt control ECU Driving support ECU |
| U0123 | When the engine switch is on (IG), a communication error between the yaw rate sensor and the driving support ECU is detected for approx. 1 second. | Yaw rate sensor CAN communication system Driving support ECU |
| U0126 | When the engine switch is on (IG), a communication error between the steering sensor and the driving support ECU is detected for approx. 1 second. | Steering angle sensor CAN communication system Driving support ECU |
| U0140 | While engine switch is on (IG), communication stop between main body ECU and seat belt control ECU continues for 1 second or more. | Main body ECU CAN communication system Seat belt control ECU |
| U0151 | While engine switch is on (IG), communication stop between air bag ECU and seat belt control ECU continues for 1 second or more. | Air bag ECU CAN communication system Seat belt control ECU |
| U1100 | When the engine switch is on (IG), a communication error between the seat belt control ECU and the driving support ECU is detected for approx. 1 second. | Seat belt control ECU CAN communication system Driving support ECU |
The driving support ECU sends information on steering angle and steering direction to the millimeter wave radar sensor. The millimeter wave radar sensor then sends information on the presence, distance, and relative speed of objects ahead to the driving support ECU. The driving support ECU sends this information to the ECM and performs cruise control.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| U0235 | When the engine switch is on (IG), a communication error between the millimeter wave radar sensor and the driving support ECU is detected for approx. 1 second. | Communication circuit Millimeter wave radar sensor Driving support ECU |
Scheme 259
The driving support ECU sends vehicle speed and vehicle condition information to the millimeter wave radar sensor. The millimeter wave radar sensor then sends information on the presence, distance, and relative speed of objects ahead to the driving support ECU. The driving support ECU sends this information to the ECM and performs cruise control.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| U1102 | When the engine switch is on (IG), a communication error between the driving support ECU and the millimeter wave radar sensor is detected for approx. 1 second. | Communication circuit Millimeter wave radar sensor Driving support ECU |
Scheme 260
This circuit supplies power to the seat belt control ECU.
