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 RH.
When DTC B2000 is stored, DTCs B2016, B2026, B2027 and B2035 are not stored.
| DTC Code | DTC Detection Condition | Trouble Area |
|---|---|---|
| B2000 | During the initial check or with the engine switch on (IG), the seat belt motor RH circuit has a power supply short (the voltage at terminals MOR+ and MOR- is 8.5 V or higher) for 1 second or more. | Front seat outer belt assembly RH Harness or connector Seat belt control ECU |
Scheme 145
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 RH.
When DTC B2001 is stored, DTCs B2015, B2026 and B2027 are not stored.
| DTC Code | DTC Detection Condition | Trouble Area |
|---|---|---|
| B2001 | During the initial check or with the engine switch on (IG), the seat belt motor RH circuit has a ground short (the voltage at terminals MOR+ and MOR- is below 2 V) for 1 second or more. | Front seat outer belt assembly RH Harness or connector 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 RH.
When DTC B2002 is stored, DTCs B2026 and B2027 are not stored.
| DTC Code | DTC Detection Condition | Trouble Area |
|---|---|---|
| B2002 | During the initial check or with the engine switch on (IG), the seat belt motor RH circuit has an open (the voltage at terminal MOR+ is 8.5 V or higher and the voltage at terminal MOR- is below 2 V) for 1 second or more. | Front seat outer belt assembly RH Harness or connector 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 LH.
When DTC B2005 is stored, DTCs B2021, B2031, B2032 and B2035 are not stored.
| DTC Code | DTC Detection Condition | Trouble Area |
|---|---|---|
| B2005 | During the initial check or with the engine switch on (IG), the seat belt motor LH circuit has a power supply short (the voltage at terminals MOL+ and MOL- is 8.5 V or higher) for 1 second or more. | Front seat outer belt assembly LH Harness or connector Seat belt control ECU |
Scheme 146
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 LH.
When DTC B2006 is stored, DTCs B2020, B2031 and B2032 are not stored.
| DTC Code | DTC Detection Condition | Trouble Area |
|---|---|---|
| B2006 | During the initial check or with the engine switch on (IG), the seat belt motor LH circuit has a ground short (the voltage at terminals MOL+ and MOL- is below 2 V) for 1 second or more. | Front seat outer belt assembly LH Harness or connector 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 LH.
When DTC B2007 is stored, DTCs B2031 and B2032 are not stored.
| DTC Code | DTC Detection Condition | Trouble Area |
|---|---|---|
| B2007 | During the initial check or with the engine switch on (IG), the seat belt motor LH circuit has an open (the voltage at terminal MOL+ is 8.5 V or higher and the voltage at terminal MOL- is below 2 V) for 1 second or more. | Front seat outer belt assembly LH Harness or connector Seat belt control ECU |
The DTCs above are output during the seat belt control ECU self-diagnosis.
When DTC B2015 or B2016 is stored, DTCs B2026 and B2027 are not stored.
When DTC B2020 or B2021 is stored, DTCs B2031 and B2032 are not stored.
| DTC Code | DTC Detection Condition | Trouble Area |
|---|---|---|
| B2015 | While the initial check is running and the engine switch is on (IG), the seat belt control ECU detects an internal malfunction for 1 second. | Seat belt control ECU |
| B2016 | While the initial check is running and the engine switch is on (IG), the seat belt control ECU detects an internal malfunction for 1 second. | Seat belt control ECU |
| B2020 | While the initial check is running and the engine switch is on (IG), the seat belt control ECU detects an internal malfunction for 1 second. | Seat belt control ECU |
| B2021 | While the initial check is running and the engine switch is on (IG), the seat belt control ECU detects an internal malfunction for 1 second. | Seat belt control ECU |
| B2025 | While the initial check is running and the engine switch is on (IG), the seat belt control ECU detects an internal malfunction for 1 second. | Seat belt control ECU |
| B2026 | While the initial check is running and the engine switch is on (IG), the seat belt control ECU detects an internal malfunction for 1 second. | Seat belt control ECU |
| B2027 | While the initial check is running and the engine switch is on (IG), the seat belt control ECU detects an internal malfunction for 1 second. | Seat belt control ECU |
| B2030 | While the initial check is running and the engine switch is on (IG), the seat belt control ECU detects an internal malfunction for 1 second. | Seat belt control ECU |
| B2031 | While the initial check is running and the engine switch is on (IG), the seat belt control ECU detects an internal malfunction for 1 second. | Seat belt control ECU |
| B2032 | While the initial check is running and the engine switch is on (IG), the seat belt control ECU detects an internal malfunction for 1 second. | Seat belt control ECU |
| B2035 | While the initial check is running and the engine switch is on (IG), the seat belt control ECU detects an internal malfunction for 1 second. | Seat belt control ECU |
| B2040 | While the initial check is running and the engine switch is on (IG), the seat belt control ECU detects an internal malfunction for 1 second. | Seat belt control ECU |
| B2041 | While the initial check is running and the engine switch is on (IG), the seat belt control ECU detects an internal malfunction for 1 second. | Seat belt control ECU |
| B2043 | While the initial check is running and the engine switch is on (IG), the seat belt control ECU detects an internal malfunction for 3 seconds. | Seat belt control ECU |
| B2047 | While the initial check is running and the engine switch is on (IG), the seat belt control ECU detects an internal malfunction for 1 second. | Seat belt control ECU |
This DTC is stored during the seat belt control ECU self-diagnosis or when power is not supplied to the seat belt control ECU.
| DTC Code | DTC Detection Condition | Trouble Area |
|---|---|---|
| B2036 | An open in the power supply circuit. | Harness or connector Seat belt control ECU |
Scheme 147
This DTC is stored 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 seat belt control ECU through the CAN communication line.
| DTC Code | DTC Detection Condition | Trouble Area |
|---|---|---|
| B2060 | While the initial check is running, the engine switch is on (IG) and the pre-collision system is operating, a brake system malfunction signal is received from the skid control ECU for 1 second. | Vehicle stability control system Seat belt control ECU |
The seat belt control ECU is connected to the main body ECU through CAN communication.
The seat belt control ECU receives the steering wheel position information from the main body ECU via CAN communication and stores the vehicle model information. If the seat belt control ECU cannot receive the steering wheel position information from the main body ECU, DTC B2064 is stored.
| DTC Code | DTC Detection Condition | Trouble Area |
|---|---|---|
| B2064 | During the initial check, the steering wheel position information sent to the seat belt control ECU from the main body ECU stops for 3 seconds or more. | CAN communication system Main body ECU (Multiplex network body ECU) Seat belt control ECU |
The seat belt control ECU receives front seat buckle switch LH condition information from the center airbag sensor assembly through the CAN communication line and controls the pre-collision system.
This code is stored when a buckle switch malfunction signal is received from the airbag system.
| DTC Code | DTC Detection Condition | Trouble Area |
|---|---|---|
| B2074 | While the initial check is running, the engine switch is on (IG) and the pre-collision system is operating, a malfunction signal is received from the center airbag sensor assembly for 3 seconds. | Airbag system Seat belt control ECU |
The seat belt control ECU receives front seat buckle switch RH condition information from the occupant detection ECU through the CAN communication line and controls the pre-collision system.
This code is stored when a buckle switch malfunction signal is received from the occupant classification system.
| DTC Code | DTC Detection Condition | Trouble Area |
|---|---|---|
| B2075 | While the initial check is running, the engine switch is on (IG) and the pre-collision system is operating, a malfunction signal is received from the occupant detection ECU for 3 seconds. | Occupant classification system Airbag system Seat belt control ECU |
The circuit consists of the driving support ECU, skid control ECU 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.
| DTC Code | DTC Detection Condition | Trouble Area |
|---|---|---|
| B2085 | The seat belt control ECU detects an interruption in CAN communication between the driving support ECU and skid control ECU 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 or pre-collision system (Pre-Collision 2), the malfunction information is sent to the seat belt control ECU, which stores this DTC.
When DTC B2090 is stored, other DTCs stored by the driving support ECU (dynamic radar cruise control system, lane departure alert system* and Pre-Collision 2) are also stored.
| DTC Code | DTC Detection Condition | Trouble Area |
|---|---|---|
| B2090 | During the initial check, while the engine switch is on (IG) or while the pre-collision system is operating, the driving support ECU detects a malfunction in the dynamic radar cruise control system, lane departure alert system* or pre-collision system (Pre-Collision 2), or lane recognition camera sensor assembly initial beam axis adjustment has not been performed for 1 second or more. | Dynamic radar cruise control system Lane departure alert system* Pre-collision system (Pre-Collision 2) Adjust lane recognition camera sensor assembly* Seat belt control ECU |
- *: w/ Lane Departure Alert System
The driving support ECU uses the millimeter wave radar sensor assembly, lane recognition camera sensor assembly*1 and driver monitor camera*2 to detect obstacles in front of the vehicle and the direction that the driver head is facing. 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.
- *1: w/ Lane Departure Alert System
- *2: w/ Driver Monitor Camera
| DTC Code | DTC Detection Condition | Trouble Area |
|---|---|---|
| C1A01 | While the initial check is running, the engine switch is on (IG) and the pre-collision system is operating, the driving support ECU detects an internal malfunction for 1 second. | Driving support ECU |
When the driving support ECU is replaced with a new one, it acquires the country specification information from the main body ECU (multiplex network body ECU). If the driving support ECU cannot store the country specification information, DTC C1A02 is stored.
| DTC Code | DTC Detection Condition | Trouble Area |
|---|---|---|
| C1A02 | While the engine switch is on (IG) and the pre-collision system is operating, the driving support ECU cannot store the country specification information. | Main body ECU (Multiplex network body ECU) Driving support ECU |
The driving support ECU uses the millimeter wave radar sensor assembly, lane recognition camera sensor assembly*1 and driver monitor camera*2 to detect obstacles in front of the vehicle and the direction that the driver head is facing. Based on this information, the driving support ECU sends pre-collision control operation signals.
When the millimeter wave radar sensor assembly 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 and driving support ECU do not match, DTC C1A0A is output.
- *1: w/ Lane Departure Alert System
- *2: w/ Driver Monitor Camera
| DTC Code | DTC Detection Condition | Trouble Area |
|---|---|---|
| C1A0A | While the initial check is running, the engine switch is on (IG) and the pre-collision system is operating, the country specification information in the driving support ECU and millimeter wave radar sensor assembly do not match for 1 second. | Millimeter wave radar sensor assembly Driving support ECU |
The driving support ECU uses the millimeter wave radar sensor assembly, lane recognition camera sensor assembly and driver monitor camera* to detect obstacles in front of the vehicle and the direction that the driver head is facing. Based on this information, the driving support ECU sends pre-collision control operation signals.
When the lane recognition camera sensor assembly 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 and driving support ECU do not match, DTC C1A0C is output.
- *: w/ Driver Monitor Camera
| DTC Code | DTC Detection Condition | Trouble Area |
|---|---|---|
| C1A0C | While the initial check is running, the engine switch is on (IG) and the pre-collision system is operating, the country specification information in the driving support ECU and lane recognition camera sensor assembly do not match for 1 second. | Lane recognition camera sensor assembly Driving support ECU |
The driving support ECU uses the millimeter wave radar sensor assembly, lane recognition camera sensor assembly*1 and driver monitor camera*2 to detect obstacles in front of the vehicle and the direction that the driver head is facing. 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 assembly, DTC C1A10 is stored.
- *1: w/ Lane Departure Alert System
- *2: w/ Driver Monitor Camera
| DTC Code | DTC Detection Condition | Trouble Area |
|---|---|---|
| C1A10 | While the engine switch is on (IG), the driving support ECU receives information that there is a malfunction in the millimeter wave radar sensor assembly for 1 second. | Millimeter waver radar sensor assembly Driving support ECU |
The driving support ECU uses the millimeter wave radar sensor assembly, lane recognition camera sensor assembly*1 and driver monitor camera*2 to detect obstacles in front of the vehicle and the direction that the driver 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 gradual curve based on signals from the yaw rate sensor, etc., the millimeter wave radar sensor assembly performs a self-diagnosis to check if the sensor beam axis is deviated from the direction that the vehicle is moving. When the beam axis of millimeter wave radar sensor assembly is deviated, the driving support ECU detects this and stores DTC C1A11.
After installing a new millimeter wave radar sensor assembly, if the sensor beam axis adjustment is not performed, DTC C1A14 is stored.
- *1: w/ Lane Departure Alert System
- *2: w/ Driver Monitor Camera
| DTC Code | DTC Detection Condition | Trouble Area |
|---|---|---|
| C1A11 | With the engine switch on (IG) and the millimeter wave radar sensor assembly performing a self-diagnosis, axis deviation is detected for 1 second (sensor self-diagnosis operates when the vehicle is driven at approximately 50 km/h [31 mph] for a total of 10 hours). | Millimeter wave radar sensor assembly Driving support ECU |
| C1A14 | The vehicle is driven at 10 km/h (6 mph) or more while axis adjustment of the millimeter wave radar sensor assembly has not been performed for 1 second. | Millimeter wave radar sensor assembly Driving support ECU |
The driving support ECU uses the millimeter wave radar sensor assembly, lane recognition camera sensor assembly and driver monitor camera* to detect obstacles in front of the vehicle and the direction that the driver head is facing. 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 lane recognition camera sensor assembly, DTC C1A20 is stored.
- *: w/ Driver Monitor Camera
| DTC Code | DTC Detection Condition | Trouble Area |
|---|---|---|
| C1A20 | While the engine switch is on (IG), the driving support ECU receives a signal indicating a malfunction in the lane recognition camera sensor assembly for 1 second or more. | Lane recognition camera sensor assembly Driving support ECU |
The driving support ECU uses the millimeter wave radar sensor assembly, lane recognition camera sensor assembly and driver monitor camera* to detect obstacles in front of the vehicle and the direction that the driver head is facing. Based on this information, the driving support ECU sends pre-collision control operation signals.
If the driving support ECU determines that the lane recognition camera sensor assembly axis has deviated, DTC C1A22 is stored.
Also, if the lane recognition camera sensor assembly beam axis adjustment is not performed after installing the camera sensor, DTC C1A23 is stored.
- *: w/ Driver Monitor Camera
| DTC Code | DTC Detection Condition | Trouble Area |
|---|---|---|
| C1A22 | While the engine switch is on (IG), the driving support ECU detects lane recognition camera sensor assembly beam axis deviation for 1 second or more. | Lane recognition camera sensor assembly Driving support ECU |
| C1A23 | While the engine switch is on (IG), the driving support ECU detects that lane recognition camera sensor assembly adjustment has not been completed for 1 second or more. | Lane recognition camera sensor assembly Driving support ECU |
The driving support ECU uses the millimeter wave radar sensor assembly, lane recognition camera sensor assembly* and driver monitor camera to detect obstacles in front of the vehicle and the direction that the driver head is facing. 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 driver monitor ECU, DTC C1A30 is stored.
- *: w/ Lane Departure Alert System
| DTC Code | DTC Detection Condition | Trouble Area |
|---|---|---|
| C1A30 | While the engine switch is on (IG), driving support ECU receives information that there is a malfunction in the driver monitor ECU for 1 second (6 trip detection logic). | Driver monitor ECU Driving support ECU |
The driving support ECU uses the millimeter wave radar sensor assembly, lane recognition camera sensor assembly* and driver monitor camera to detect obstacles in front of the vehicle and the direction that the driver head is facing. 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 driver monitor camera, DTC C1A31 is stored.
- *: w/ Lane Departure Alert System
| DTC Code | DTC Detection Condition | Trouble Area |
|---|---|---|
| C1A31 | While the engine switch is on (IG), the driving support ECU receives information that there is a malfunction in the driver monitor camera for 1 second (6 trip detection logic). | Harness or connector Driver monitor camera Driver monitor ECU Driving support ECU |
Scheme 148
Scheme 149
- CHECK HARNESS AND CONNECTOR (DRIVER MONITOR ECU - DRIVER MONITOR CAMERA) Disconnect the G62 ECU connector. Disconnect the G63 camera connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition G62-17 (LS) - G63-3 (LS) Always Below 1 ohms G62-6 (CB+) - G63-1 (CB+) Always Below 1 ohms C62-22 (CV+) - G63-4 (CV+) Always Below 1 ohms G62-8 (CGND) - G63-2 (CGND) Always Below 1 ohms G62-23 (CV-) - G63-5 (CV-) Always Below 1 ohms G62-17 (LS) - Body ground Always 10 kohms or higher G62-6 (CB+) - Body ground Always 10 kohms or higher C62-22 (CV+) - Body ground Always 10 kohms or higher G62-8 (CGND) - Body ground Always 10 kohms or higher G62-23 (CV-) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
- CHECK DRIVER MONITOR ECU Remove the driver monitor ECU with its connector still connected. Refer to «REMOVAL»(ref-524362-S18720485612013012800000) . Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition G62-17 (LS) - Body ground Engine switch on (IG) 0.4 V or higher G62-6 (CB+) - G62-8 (CGND) Engine switch on (IG) 5.5 to 6.5 V TEXT IN ILLUSTRATION *a Component with harness connected (Driver Monitor ECU) NG --> See step 5 OK: Go to next step
- REPLACE DRIVER MONITOR CAMERA Replace the driver monitor camera. Refer to «REMOVAL»(ref-524362-S01802974142013012800000) . NEXT: Go to next step
- CHECK FOR DTC Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-524372-S11921610792013012800000) . Check for DTCs. Refer to «DTC CHECK / CLEAR»(ref-524372-S11921610792013012800000) . OK DTC C1A31 is not output. NG --> See step 6 OK --> END (DRIVER MONITOR CAMERA IS DEFECTIVE)
- REPLACE DRIVER MONITOR ECU. Refer to «REMOVAL»(ref-524362-S18720485612013012800000)
- REPLACE DRIVING SUPPORT ECU. Refer to «REMOVAL»(ref-524127-S24372818842013012800000)
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 and yaw rate sensor send a malfunction signal to the driving support ECU which stores DTC C1A46.
| DTC Code | DTC Detection Condition | Trouble Area |
|---|---|---|
| C1A46 | While the vehicle speed is 5 km/h (3 mph) or more, a malfunction signal from the skid control ECU and yaw rate sensor is detected for 1 second. | Vehicle stability control system 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.
| DTC Code | DTC Detection Condition | Trouble Area |
|---|---|---|
| C1A47 | While the vehicle speed is 50 km/h (31 mph) or more, a steering angle sensor malfunction signal is received from the skid control ECU for 1 second. | Vehicle stability control system Driving support ECU |
Based on pre-collision control, the driving support ECU warns the driver to be careful by sending a sounding signal to the skid control ECU to sound the skid control buzzer.
When the skid control ECU detects a malfunction in the skid control buzzer circuit, a malfunction signal is sent to the driving support ECU and a DTC is stored. Although the skid control ECU sends a malfunction signal to the driving support ECU, the relevant ABS DTCs are not stored.
| DTC Code | DTC Detection Condition | Trouble Area |
|---|---|---|
| C1A4A | While the engine switch is on (IG), a skid control buzzer circuit malfunction signal is received by the skid control ECU for 1 second. | Skid control buzzer circuit Master cylinder assembly (Skid control ECU) Driving support ECU |
The stop light switch outputs a brake pedal operation signal to the driving support ECU.
| DTC Code | DTC Detection Condition | Trouble Area |
|---|---|---|
| C1A4B | When the engine switch is on (IG), a stop light control ECU malfunction signal is received from the skid control ECU. | Vehicle stability control system Master cylinder solenoid (Skid control ECU) Driving support ECU |
These DTCs are stored when a communication malfunction occurs between the sensors and ECUs that detect collisions, or between ECUs that perform pre-collision control.
| DTC Code | DTC Detection Condition | Trouble Area |
|---|---|---|
| U0122 | While the engine switch is on (IG), communication stops between the skid control ECU and driving support ECU or seat belt control ECU for 1 second or more. | Master cylinder solenoid (Skid control ECU) CAN communication system Seat belt control ECU Driving support ECU |
| U0123 | While the engine switch is on (IG), communication stops between the yaw rate sensor and driving support ECU for 1 second or more. | Yaw rate sensor CAN communication system Driving support ECU |
| U0126 | While the engine switch is on (IG), communication stops between the steering angle sensor and driving support ECU for 1 second or more. | Steering angle sensor CAN communication system Driving support ECU |
| U0140 | While the engine switch is on (IG), communication stops between the main body ECU and seat belt control ECU for 1 second or more. | Main body ECU (Multiplex network body ECU) CAN communication system Seat belt control ECU |
| U0151 | While the engine switch is on (IG), communication stops between the center airbag sensor assembly and seat belt control ECU for 1 second or more. | Center airbag sensor assembly CAN communication system Seat belt control ECU |
| U0235 | While the engine switch is on (IG), communication stops between the millimeter wave radar sensor assembly and driving support ECU for 1 second or more. | Millimeter wave radar sensor assembly CAN communication system Driving support ECU |
| U1002 | While the engine switch is on (IG), communication stops between the driving support ECU and millimeter wave radar sensor assembly, driver monitor camera or lane recognition camera sensor assembly for 1 second or more. | Driving support ECU CAN communication system Millimeter wave radar sensor assembly Driver monitor ECU Lane recognition camera sensor assembly |
| U1100 | While the engine switch is on (IG), communication stops between the seat belt control ECU and driving support ECU for 1 second or more. | Seat belt control ECU CAN communication system Driving support ECU |
| U1104 | While the engine switch is on (IG), communication stops between the seat belt control ECU or millimeter wave radar sensor assembly and driving support ECU for 1 second or more. | Millimeter wave radar sensor assembly Seat belt control ECU CAN communication system Driving support ECU |
| U1121 | While the engine switch is on (IG), communication stops between the driver monitor ECU and driving support ECU for 1 second or more. | Driver monitor ECU CAN communication system Driving support ECU |
Because of the location of the lane recognition camera assembly, it is subject to high temperatures. If the lane recognition camera sensor assembly becomes too hot, the power source is shut down to protect the system. At that time CAN communication also stops. However, in order to inform the driving support ECU that CAN communication has not stopped because of a CAN communication error, on/off signals are periodically sent from the HITP terminal.
| DTC Code | DTC Detection Condition | Trouble Area |
|---|---|---|
| U1119 | When the engine switch is on (IG), a communication error between the lane recognition camera sensor assembly and driving support ECU is detected for 1 second. | CAN communication system Harness or connector Lane recognition camera sensor assembly Driving support ECU |
Scheme 150
The driving support ECU receives pre-collision brake on/off signals from the pre-collision brake cancel switch assembly.
Scheme 151
Scheme 152
- READ VALUE USING TECHSTREAM (PRE-COLLISION BRAKE CANCEL SWITCH) Use the Data List to check if the pre-collision brake cancel switch assembly is functioning properly. Refer to «DATA LIST / ACTIVE TEST»(ref-524372-S18199018242013012800000) . PRE-COLLISION 2 Tester Display Measurement Item/Range Normal Condition Diagnostic Note Pre-Collision Brake OFF Switch Pre-collision brake cancel switch assembly signal / ON or OFF ON: Pre-collision brake cancel switch assembly on OFF: Pre-collision brake cancel switch assembly off - OK On screen, item changes between ON and OFF according to above chart. NG --> See step 2 OK --> See step 4
- INSPECT PRE-COLLISION BRAKE CANCEL SWITCH ASSEMBLY Remove the pre-collision brake cancel switch assembly. Refer to «REMOVAL»(ref-524362-S17826640402013012800000) . Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition 1 (GND) - 2 (ECU) Pressed Below 1 ohms 1 (GND) - 2 (ECU) Not pressed 10 kohms or higher NG --> See step 5 OK: Go to next step
- CHECK HARNESS AND CONNECTOR (PRE-COLLISION BRAKE CANCEL SWITCH - DRIVING SUPPORT ECU AND BODY GROUND) Disconnect the G52 switch connector. Disconnect the G43 ECU connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition G52-2 (ECU) - G43-5 (PBSW) Always Below 1 ohms G52-1 (GND) - Body ground Always Below 1 ohms G52-2 (ECU) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 6
- PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE»(ref-524372-S36238402532013012800000)
- REPLACE PRE-COLLISION BRAKE CANCEL SWITCH ASSEMBLY. Refer to «REMOVAL»(ref-524362-S17826640402013012800000)
- REPLACE DRIVING SUPPORT ECU. Refer to «REMOVAL»(ref-524127-S24372818842013012800000)