DESCRIPTION
The seat belt control ECU receives information from the distance control 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 Short in the seat belt motor RH circuit | Front seat outer belt assembly RH Wire harness (seat belt control ECU - front seat outer belt assembly RH) Seat belt control ECU |
Scheme 235
The seat belt control ECU receives information from the distance control 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 Short in seat belt motor RH circuit | 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 distance control ECU using CAN communication and tightens the seat belt by operating the motor in the front seat outer belt assembly RH.
| DTC No. | DTC Detecting 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 distance control 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 Short in seat belt motor LH circuit | Front seat outer belt assembly LH Wire harness (seat belt control ECU - front seat outer belt assembly LH) Seat belt control ECU |
Scheme 236
The seat belt control ECU receives information from the distance control 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 Short in seat belt motor LH circuit | 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 distance control 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 belt 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 1 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 output when one of the following occurs: 1) an error in communication with the millimeter wave radar sensor assembly is detected, or 2) vehicle information sent from the radar sensor assembly is abnormal. If output, perform initialization of the radar sensor assembly to register the vehicle information to the radar sensor assembly.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| B2055 | Radar sensor assembly malfunction is detected or initialization settings are faulty | CAN communication system Millimeter wave radar sensor Seat belt control ECU |
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| B2056 | Radar sensor assembly malfunction is detected or initialization settings are faulty | CAN communication system Millimeter wave radar sensor (axial adjustment) Seat belt control ECU |
This DTC is output when a malfunction in the yaw rate sensor is detected. This circuit consists of the yaw rate sensor and seat belt control ECU. Signals are sent from the yaw rate sensor using CAN communication.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| B2057 | Malfunction in yaw rate sensor | CAN communication system Yaw rate sensor Distance control ECU Seat belt control ECU |
This DTC is output when a malfunction in the steering angle sensor is detected. This circuit consists of the steering angle sensor and seat belt control ECU. Signals are sent from the steering sensor using CAN communication.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| B2058 | Malfunction in steering angle sensor is detected | CAN communication system Steering angle sensor Distance control ECU Seat belt control ECU |
The distance control ECU uses the combination meter to send vehicle speed information to the ECM. The ECM and the skid control ECU use CAN communication to send vehicle speed information to the distance control ECU. This DTC is output when the difference between the vehicle speed information from the ECM and the skid control ECU is more than the specified value.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| B2059 | Difference between vehicle speed information from ECM and ABS & traction actuator assembly is more than specified value | CAN communication system Combination meter assembly ECM Skid control ECU Distance control ECU Seat belt control ECU |
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 using the CAN communication.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| B2060 | Malfunction in brake system is detected | CAN communication system Skid control ECU Seat belt control ECU |
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| B2065 | Malfunction in distance control ECU Inconsistency of vehicle information (country specification, etc) stored in the distance control ECU, main body ECU and ECM. | Distance control 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 | Front seat inner belt LH assembly Center airbag sensor assembly Seat belt control ECU |
| B2075 | Malfunction in front seat belt inner RH | Front seat inner belt RH assembly Occupant classification ECU Center airbag sensor assembly Seat belt control ECU |
Scheme 237
The seat belt control ECU receives signals from the skid control ECU, center airbag sensor assembly, and distance control ECU via CAN communication system.
The distance control ECU receives signals from the ECM via CAN communication.
| DTC No. | DTC Detection Item | Inspection Area |
|---|---|---|
| U0100 | ECM communication error | CAN communication system ECM Distance control ECU |
| U0122 | Skid control ECU communication error | CAN communication system Skid control ECU Seat belt control ECU |
| U0151 | Center airbag sensor communication error | CAN communication system Center airbag sensor assembly Seat belt control ECU |
| U1101 | Distance control ECU communication error | CAN communication system Distance control ECU Seat belt control ECU |
HINT
When two or more DTCs starting with "U" are output simultaneously, inspect the connectors and wire harness of each ECU.
The millimeter wave radar sensor and distance control ECU transmit the data for general vehicle control and diagnosis function via CAN communication.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| U0235 | ECM detects communication error signal from millimeter wave radar sensor to distance control ECU for 0.15 sec. or more while dynamic radar cruise control is in operation. | CAN communication system Millimeter wave radar sensor Distance control ECU |
| U1102 | ECM detects communication error signal (from distance control ECU to millimeter wave radar sensor to distance control ECU) for 0.15 sec. or more while dynamic radar cruise control is in operation. | CAN communication system Millimeter wave radar sensor Distance control ECU |
This circuit supplies power to the seat belt control ECU.
Scheme 238
See also:
• REMOVAL