DESCRIPTION
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 assembly.
When DTC B2000 is detected, DTCs B2016, B2026, B2027, and B2035 will not be detected.
When DTC B2005 is detected, DTCs B2021, B2031, B2032, and B2035 will not be detected.
| DTC Code | DTC Detection Condition | Trouble Area |
|---|---|---|
| B2000 | During initial check or with engine switch on (IG), seat belt motor RH side circuit has power supply short (terminal MOL+ and MOL-are 8.5 V or more) for 1 second or more | Front seat outer belt RH Wire harness Seat belt control ECU |
| B2005 | During initial check or with engine switch on (IG), seat belt motor LH side circuit has power supply short (terminal MOL+ and MOL- are 8.5 V or more) for 1 second or more | Front seat outer belt LH Wire harness Seat belt control ECU |
DTC DETECTION CONDITION CHART
Scheme 1
Scheme 2
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 assembly.
When DTC B2001 is detected, DTCs B2015, B2026 and B2027 will not be detected.
When DTC B2006 is detected, DTCs B2020, B2031, and B2032 will not be detected.
| DTC Code | DTC Detection Condition | Trouble Area |
|---|---|---|
| B2001 | During initial check or with engine switch on (IG), seat belt motor RH side circuit has ground short (terminal MOR+ and MOR- are below 2 V) for 1 second or more | Front seat outer belt RH Wire harness Seat belt control ECU |
| B2006 | During initial check or with engine switch on (IG), seat belt motor LH side circuit has ground short (terminal MOL+ and MOL- are below 2 V) for 1 second or more | Front seat outer belt LH Wire harness Seat belt control ECU |
DTC DETECTION CONDITION CHART
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 assembly.
When DTC B2002 is detected, DTCs B2026 and B2027 will not be detected.
When DTC B2007 is detected, DTCs B2031, and B2032 will not be detected.
| DTC Code | DTC Detection Condition | Trouble Area |
|---|---|---|
| B2002 | During initial check or with engine switch on (IG), seat belt motor LH side circuit has open (terminal MOR+ is 8.5 V or more and MOR- is below 2 V) for 1 second or more | Front seat outer belt RH Wire harness Seat belt control ECU |
| B2007 | During initial check or with engine switch on (IG), seat belt motor LH side circuit has open (terminal MOL+ is 8.5 V or more and MOL- is below 2 V) for 1 second or more | Front seat outer belt H Wire harness Seat belt control ECU |
DTC DETECTION CONDITION CHART
The DTCs above are output during the seat belt control ECU'S self diagnosis.
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 Code | 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 sec. | 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 sec. | 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 sec. | 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 sec. | 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 sec. | 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 sec. | 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 sec. | 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 sec. | 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 sec. | 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 sec. | 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 1 sec. | 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 sec. | 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 sec. | 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 sec. | 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 sec. | Seat belt control ECU |
DTC DETECTION CONDITION CHART
This DTC is stored during the seat belt diagnosis of the seat belt control ECU, or when the power source is not supplied to the seat belt control ECU.
| DTC Code | DTC Detection Condition | Trouble Area |
|---|---|---|
| B2036 | Open in the power supply circuit | Harness or connector Seat belt control ECU |
DTC DETECTION CONDITION CHART
Scheme 3
This DTC is output when a malfunction in the brake system is detected. This circuit consists of the skid control ECU and seat belt control ECU. Signals are sent from the skid control ECU to the seal belt control ECU through the CAN communication line.
When DTC B2060 is detected, ABS system DTCs will also be detected.
| DTC Code | DTC Detection Condition | Trouble Area |
|---|---|---|
| B2060 | While initial check is running, engine switch is on (IG) and pre-collision system is operating, brake system malfunction signal is received from skid control ECU for 1 sec. | Electronically controlled brake system CAN communication system Seat belt control ECU |
DTC DETECTION CONDITION CHART
The seat belt control ECU is connected to the main body ECU through 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 airbag sensor center is for the driver seat or the front passenger seat.
DTC B2064 is output when CAN communication with the main body ECU is normal and when communication is available, but the steering wheel position information is not set or varies.
| DTC Code | DTC Detection Condition | Trouble Area |
|---|---|---|
| B2064 | While initial check is running, main body ECU is not received steering wheel position information for 3 sec. | Main body ECU CAN communication system Seat belt control ECU |
DTC DETECTION CONDITION CHART
The seat belt control ECU receives driver side buckle switch condition information from the center airbag sensor through the CAN communication line and controls the pre-collision system.
This code is output when a buckle switch malfunction signal is received from the airbag system.
When DTC B2074 is detected, DTC B1655 is also output.
When DTC B2075 is detected, DTC B1650 is also output.
| DTC Code | DTC Detection Condition | Trouble Area |
|---|---|---|
| B2074 | While initial check is running, engine switch is on (IG) and pre-collision system is operating, malfunction signal is received from center airbag sensor for 3 sec. | Front seat outer belt LH Center airbag sensor CAN communication system Seat belt control ECU |
| B2075 | While initial check is running, engine switch is on (IG) and pre-collision system is operating, malfunction signal is received from center airbag sensor for 3 sec. | Front seat outer belt RH Center airbag sensor Occupant classification ECU CAN communication system Seat belt control ECU |
DTC DETECTION CONDITION CHART
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 assembly.
When the driving support ECU detects a malfunction in the dynamic radar cruise control system, lane-keeping assist system, and pre-collision system ("Pre-Collision 2" part), or detects that the object recognition camera has not been adjusted, the malfunction information is sent to the seat belt control ECU, which outputs this DTC.
When DTC B2090 is detected, other DTCs output by the driving support ECU (dynamic radar cruise control system, and pre-collision 2 also are output.
| DTC Code | 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 | Driving support system Seat belt control ECU |
DTC DETECTION CONDITION CHART
The driving support ECU uses the front 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.
When DTC C1A01 is detected, the driving support ECU only detects the "Pre-Collision 2" DTC malfunctions.
| DTC Code | DTC Detection Condition | Trouble Area |
|---|---|---|
| C1A01 | While initial check is running, engine switch is on (IG) and pre-collision system is operating, driving support ECU detects an internal malfunction for 1 sec. | Driving support ECU |
DTC DETECTION CONDITION CHART
The driving support ECU uses the front 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 front 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 combination meter. When country specification information in the sensor and ECU do not match, DTC C1A0A is output.
| DTC Code | DTC Detection Condition | Trouble Area |
|---|---|---|
| C1A0A | While initial check is running, engine switch is on (IG) and pre-collision system is operating, country specification information in driving support ECU and front millimeter wave radar sensor do not match for 1 sec. | Front millimeter wave radar sensor Combination meter Driving support ECU |
DTC DETECTION CONDITION CHART
The driving support ECU uses the front 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 front millimeter wave radar sensor, DTC C1A10 is output.
This DTC is also output from the dynamic radar cruise control system.
| DTC Code | DTC Detection Condition | Trouble Area |
|---|---|---|
| C1A10 | While the engine switch is on (IG), driving support ECU receives information that there is malfunction in front millimeter wave radar sensor for 1 sec. | Front millimeter wave radar sensor Driving support ECU |
DTC DETECTION CONDITION CHART
The driving support ECU uses the front millimeter wave radar sensor to detect obstacles in front of and behind the vehicle, and detect the direction that the driver's head is facing. 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 front millimeter wave radar sensor assembly performs a self diagnosis to check if the sensor beam axis is deviated from the vehicle movement direction. When the front millimeter wave radar sensor assembly's beam axis is deviated, the driving support ECU detects this, and outputs DTC C1A11.
After installing a new front millimeter wave radar sensor, if the sensor beam axis adjustment is not performed, DTC C1A14 is output.
This DTC is also output from the dynamic radar cruise control system.
| DTC Code | DTC Detection Condition | Trouble Area |
|---|---|---|
| C1A11 | With engine switch on (IG) and front millimeter wave radar sensor performing self diagnosis, axis deviation is detected for 1 sec. (sensor self diagnosis operates when vehicle is driven at approximately 50 km/h (31 mph) for 10 hours) | Front millimeter wave radar sensor Driving support ECU |
| C1A14 | Driving at 10 km/h (6 mph) or more while front millimeter wave radar sensor's axis adjustment has not been performed for 1 sec. | Front millimeter wave radar sensor Driving support ECU |
DTC DETECTION CONDITION CHART
When the driving support ECU receives an engine control (SFI) system or automatic transmission (ECT) system malfunctioning signal from the ECM via the CAN communication line, DTC C1A40 is output. When DTC C1A40 is detected, the engine control system or ECT system DTC will also be detected.
| DTC Code | DTC Detection Condition | Trouble Area |
|---|---|---|
| C1A40 | While engine switch is on (IG), SFI system malfunction signal is detected for 1 sec. | SFI system ECT system ECM Driving support ECU |
DTC DETECTION CONDITION CHART
The skid control ECU receives brake control request signals from the ECM and driving support ECU. When the request signals received from the ECM and driving support ECU are not consistent, the skid control ECU determines that a malfunction has occurred and sends a malfunction signal to the driving support ECU.
If the driving support ECU receives a malfunction signal, DTC C1A41 is output. Although the skid control ECU sends a malfunction signal to the driving support ECU, the ABS does not output a relevant malfunction detection DTC.
| DTC Code | DTC Detection Condition | Trouble Area |
|---|---|---|
| C1A41 | While engine switch is on (IG), brake request signal from ECM and driving support ECU is inconsistent for 1 sec. | Anti-lock brake system SFI system ECM Skid control ECU Driving support ECU |
DTC DETECTION CONDITION CHART
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 outputs DTC C1A46. Also, when DTC C1A46 is output, the skid control ECU outputs DTC C1234 at the same time.
When DTC C1A46 is detected, DTC C1234 is also output from the "ABS/VSC/TRAC".
| DTC Code | DTC Detection Condition | Trouble Area |
|---|---|---|
| C1A46 | While vehicle speed is 5 km/h (3 mph) or more, malfunction signal from skid control ECU to yaw rate sensor is detected for 1 sec. | Yaw rate sensor Skid control ECU Driving support ECU |
DTC DETECTION CONDITION CHART
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 C1231 is also output from the "ABS/VSC/TRAC".
| DTC Code | DTC Detection Condition | Trouble Area |
|---|---|---|
| C1A47 | While vehicle speed is 50 km/h (31 mph) or more, steering angle sensor malfunction signal is received from skid control ECU for 1 sec. | Steering angle sensor Skid control ECU Driving support ECU |
DTC DETECTION CONDITION CHART
The driving support ECU uses the front millimeter wave radar sensor to detect obstacles in front of and behind the vehicle, and detect the direction that the driver's head is facing. Based on this information, the driving support ECU sends pre-collision control operation signals.
This DTC is output when a communication malfunction occurs between the sensors and ECUs that detect collisions, or between ECUs that perform the pre-collision control.
| DTC Code | DTC Detection Condition | Trouble Area |
|---|---|---|
| U0100 | While vehicle speed is 5 km/h (3 mph) or more, communication stop between ECM and driving support ECU continues for 1 sec. or more | ECM CAN communication system Driving support ECU |
| U0122 | While engine switch is on (IG), communication stop between skid control ECU and driving support ECU or seat belt control ECU continues for 1 sec. or more | Skid control ECU CAN communication system Seat belt control ECU Driving support ECU |
| U0123 | While engine switch is on (IG), communication stop between yaw rate sensor and driving support ECU continues for 1 sec. or more | Yaw rate sensor CAN communication system Driving support ECU |
| U0126 | While engine switch is on (IG), communication stop between steering angle sensor and driving support ECU continues for 1 sec. or more | Steering angle sensor CAN communication system Driving support ECU |
| U0140 | While engine switch is on (IG), communication stop between main body ECU and driving support ECU continues for 1 sec. or more | Main body ECU CAN communication system Driving support ECU |
| U0151 | While engine switch is on (IG), communication stop between center airbag sensor and driving support ECU continues for 1 sec. or more | Center airbag sensor CAN communication system Driving support ECU |
| U0235 | While engine switch is on (IG), communication stop between front millimeter wave radar sensor and driving support ECU continues for 1 sec. or more | Front millimeter wave radar sensor CAN communication system Driving support ECU |
| U1104 | While engine switch is on (IG), communication stop between driving support ECU and front millimeter wave radar sensor or seat belt control ECU continues for 1 sec. or more | Driving support ECU CAN communication system Front millimeter wave radar sensor Seat belt control ECU |
DTC DETECTION CONDITION CHART