DESCRIPTION
The main body ECU will store this DTC when no signals can be received from the certification ECU while the CAN MS main bus is normal.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| B1207 | No communication from certification ECU | Open or short in CAN No. 3 J/C and certification ECU Certification ECU power source circuit Certification ECU Wire harness or connector |
Scheme 51
The main body ECU will store this DTC when no signals can be received from the tilt and telescopic ECU while the CAN MS main bus is normal.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| B1213 | No communication from multiplex tilt and telescopic ECU | Open or short in CAN No. 3 J/C and multiplex tilt and telescopic ECU Multiplex tilt and telescopic ECU power source circuit Multiplex tilt and telescopic ECU Wire harness or connector |
Scheme 52
The main body ECU will store this DTC when no signals can be received from the seat position control ECU (front LH side) while the CAN MS main bus is normal.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| B1272 | No communication from seat position control ECU (Front LH side) | Open or short in CAN No. 3 J/C and seat position control ECU (Front LH side) Seat position control ECU (Front LH side) power source circuit Seat position control ECU (Front LH side) Wire harness or connector |
Scheme 53
The main body ECU will store this DTC when no signals can be received from the outer mirror control ECU while the CAN MS main bus is normal.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| B1276 | No communication from outer mirror control ECU | Open or short in CAN No. 3 J/C and outer mirror control ECU Outer mirror control ECU power source circuit Outer mirror control ECU Wire harness or connector |
Scheme 54
The main body ECU will store this DTC when no signals can be received from the seat position control ECU (front RH side) while the CAN MS main bus is normal.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| B1289 | No communication from seat position control ECU (Front RH side) | Open or short in CAN No. 3 J/C and seat position control ECU (Front RH side) Seat position control ECU (Front RH side) power source circuit Seat position control ECU (Front RH side) Wire harness or connector |
Scheme 55
The main body ECU will store this DTC when no signals can be received from the clearance warning ECU while the CAN MS main bus is normal.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| B1297 | No communication from clearance warning ECU | Open or short in CAN No. 3 J/C and clearance warning ECU Clearance warning ECU power source circuit Clearance warning ECU Wire harness or connector |
Scheme 56
- The main body ECU will store this DTC when no signals can be received from the ECUs that have been memorized as those that are connected to the CAN MS bus.
- When the main body ECU receives response signals from the ECUs connected to the CAN MS bus, the main body ECU recognizes and memorizes that the ECUs are connected to the CAN MS bus. Based on this memorized data, the main body ECU monitors for malfunctions in the ECUs connected to the CAN MS bus when communicating with those ECUs. If the main body ECU cannot receive response signals from the ECUs that have been memorized as those connected to the CAN MS bus, the main body ECU determines that a malfunction exists.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| B2326 | Main body ECU cannot receive signals from all ECUs that have been memorized as those connected to the CAN MS bus. | Open or short in MS bus main wire Open or short in MS bus branch wire Wire harness or connector Certification ECU Multiplex tilt and telescopic ECU Seat position control ECU (Front LH side) Seat position control ECU (Front RH side) Outer mirror control ECU Clearance warning ECU Main body ECU CAN No. 3 J/C |
Scheme 57
The gateway ECU will store this DTC when no signals can be received from the AFS ECU while the CAN No. 2 main bus is normal.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| U0182 | No communication from AFS ECU | Open or short in CAN No. 1 J/C and AFS ECU AFS ECU power source circuit AFS ECU Wire harness or connector |
Scheme 58
- The gateway ECU will store this DTC when no signals can be received from the ECUs that have been memorized as those that are connected to the CAN No. 2 bus.
- When the gateway ECU receives response signals from the ECUs connected to the CAN No. 2 bus, the gateway ECU recognizes and memorizes that the ECUs are connected to the CAN No. 2 bus. Based on this memorized data, the gateway ECU monitors for malfunctions in the ECUs connected to the CAN No. 2 bus when communicating with those ECUs. If the gateway ECU cannot receive response signals from the ECUs that have been memorized as those connected to the CAN No. 2 bus, the gateway ECU determines that a malfunction exists.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| U1002 | Gateway ECU cannot receive signals from all ECUs that have been memorized as those connected to the CAN No. 2 bus. | Open or short in CAN No. 2 bus main wire Open or short in CAN No. 2 bus branch wire Wire harness or connector AFS ECU Distance control ECU Seat belt control ECU Gateway ECU CAN No. 1 J/C CAN No. 4 J/C |
Scheme 59
The gateway ECU will store this DTC when no signals can be received from the seat belt control ECU while the CAN No. 2 main bus is normal.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| U1100 | No communication from seat belt control ECU | Open or short in CAN No. 1 J/C and seat belt control ECU Open in one side of CAN bus main wire (Between CAN No. 1 J/C and CAN No. 4 J/C) Seat belt control ECU power source circuit Seat belt control ECU CAN No. 4 J/C Wire harness or connector |
Scheme 60
The gateway ECU will store this DTC when no signals can be received from the distance control ECU while the CAN No. 2 main bus is normal.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| U1102 | No communication from distance control ECU | Open or short in CAN No. 1 J/C and distance control ECU Distance control ECU power source circuit Distance control ECU Wire harness or connector |
Scheme 61
| Detection Item | Symptom | Trouble Area |
|---|---|---|
| Skid Control ECU Communication Stop Mode | "ABS/VSC/TRAC" is not displayed on the "CAN Bus Check" screen of the Techstream Applies to "Skid Control ECU Communication Stop Mode" in the "DTC COMBINATION TABLE" | Power source circuit of the skid control ECU Skid control ECU branch wire or connector Skid control ECU |
HINT
"ABS/VSC/TRAC" refers to the circuit that includes the skid control ECU.
Scheme 62
| Detection Item | Symptom | Trouble Area |
|---|---|---|
| Air Conditioning Amplifier Communication Stop Mode | "Air Conditioner" is not displayed on the "CAN Bus Check" screen of the Techstream Applies to "Air Conditioning Amplifier Communication Stop Mode" in the "DTC COMBINATION TABLE" | Power source circuit of the air conditioning amplifier Air conditioning amplifier branch wire or connector Air conditioning amplifier |
HINT
"Air Conditioner" refers to the circuit that includes the air conditioning amplifier.
Scheme 63
| Detection Item | Symptom | Trouble Area |
|---|---|---|
| Gateway ECU Communication Stop Mode | "Gateway" is not displayed on the "CAN Bus Check" screen of the Techstream Applies to "Gateway ECU Communication Stop Mode" in the "DTC COMBINATION TABLE" | Power source circuit of the gateway ECU Gateway ECU branch wire or connector Gateway ECU |
HINT
"Gateway" refers to the circuit that includes the gateway ECU.
Scheme 64
| Detection Item | Symptom | Trouble Area |
|---|---|---|
| Steering Angle Sensor Communication Stop Mode | "Steering Angle Sensor" is not displayed on the "CAN Bus Check" screen of the Techstream Applies to "Steering Angle Sensor Communication Stop Mode" in the "DTC COMBINATION TABLE" | Power source circuit of the steering angle sensor Steering angle sensor branch wire or connector Steering angle sensor |
HINT
"Steering Angle Sensor" refers to the circuit that includes the steering angle sensor.
Scheme 65
| Detection Item | Symptom | Trouble Area |
|---|---|---|
| Yaw Rate Sensor Communication Stop Mode | "Yaw rate/Deceleration Sensor" is not displayed on the "CAN Bus Check" screen of the Techstream Applies to "Yaw Rate Sensor Communication Stop Mode" in the "DTC COMBINATION TABLE" | Power source circuit of the yaw rate sensor Yaw rate sensor branch wire or connector Yaw rate sensor |
HINT
"Yaw rate/Deceleration Sensor" refers to the circuit that includes the yaw rate sensor.
Scheme 66
| Detection Item | Symptom | Trouble Area |
|---|---|---|
| ECM Communication Stop Mode | "Engine" and "ECT" are not displayed on the "CAN Bus Check" screen of the Techstream Applies to "ECM Communication Stop Mode" in the "DTC COMBINATION TABLE" | Power source circuit of the ECM ECM |
HINT
"Engine" and "ECT" refer to the circuit that includes the ECM.
Scheme 67
| Detection Item | Symptom | Trouble Area |
|---|---|---|
| Main Body ECU Communication Stop Mode | "Main Body" is not displayed on the "CAN Bus Check" screen of the Techstream Applies to "Main Body ECU Communication Stop Mode" in the "DTC COMBINATION TABLE" | Power source circuit of the main body ECU Main body ECU branch wire or connector Main body ECU |
HINT
"Main Body" refers to the circuit that includes the main body ECU.
Scheme 68
| Detection Item | Symptom | Trouble Area |
|---|---|---|
| Combination Meter ECU Communication Stop Mode | "Combination Meter" is not displayed on the "CAN Bus Check" screen of the Techstream Applies to "Combination Meter ECU Communication Stop Mode" in the "DTC COMBINATION TABLE" | Power source circuit of the combination meter Combination meter main wire or connector Combination meter |
Scheme 69
| Detection Item | Symptom | Trouble Area |
|---|---|---|
| Center Airbag Sensor Communication Stop Mode | "SRS Airbag" is not displayed on the "CAN Bus Check" screen of the Techstream Applies to "Center Airbag Sensor Communication Stop Mode" in the "DTC COMBINATION TABLE" | Power source circuit of the center airbag sensor Center airbag sensor branch wire or connector Center airbag sensor |
HINT
"SRS Airbag" refers to the circuit that includes the center airbag sensor.
Scheme 70
| Detection Item | Symptom | Trouble Area |
|---|---|---|
| Navigation ECU Communication Stop Mode | "AVN" is not displayed on the "CAN Bus Check" screen of the Techstream Applies to "Navigation Control ECU Communication Stop Mode" in the "DTC COMBINATION TABLE" | Power source circuit of the display and navigation module display Navigation ECU branch wire or connector Display and navigation module display |
HINT
- "AVN" refers to the circuit that includes the display and navigation module display.
- The display and navigation module display contains the navigation ECU.
Scheme 71
| Detection Item | Symptom | Trouble Area |
|---|---|---|
| Active Control Engine Mount ECU Communication Stop Mode | "E-ACM" is not displayed on the "CAN Bus Check" screen of the Techstream Applies to "Active Control Engine Mount ECU Communication Stop Mode" in the "DTC COMBINATION TABLE" | Power source circuit of the active control engine mount ECU Active control engine mount ECU branch wire or connector Active control engine mount ECU |
HINT
"E-ACM" refers to the circuit that includes the active control engine mount ECU.
Scheme 72
There may be an open circuit in the CAN No. 1 main bus wire and/or the DLC3 branch wire when the resistance between terminals 6 (CANH) and 14 (CANL) of the DLC3 is 69 ohms or more.
| Symptom | Trouble Area |
|---|---|
| Resistance between terminals 6 (CANH) and 14 (CANL) of the DLC3 is 69 ohms or more. | CAN No. 1 main bus wire or connector CAN No. 2 J/C CAN No. 5 J/C DLC3 branch wire or connector Combination meter ECM |
Scheme 73
The CAN bus wires are considered to be shorted when the resistance between terminals 6 (CANH) and 14 (CANL) of the DLC3 is below 54 ohms.
| Symptom | Trouble Area |
|---|---|
| Resistance between terminals 6 (CANH) and 14 (CANL) of the DLC3 is below 54 ohms. | Short in CAN bus wires Skid control ECU Steering angle sensor Yaw rate sensor ECM Combination meter Main body ECU A/C amplifier Center airbag sensor Gateway ECU Active control engine mount ECU Display and navigation module display CAN No. 2 J/C CAN No. 5 J/C |
Scheme 74
Scheme 75
A short to B+ is suspected in the CAN bus wire when the resistance between terminals 6 (CANH) and 16 (BAT), or terminals 14 (CANL) and 16 (BAT) of the DLC3 is below 6 kohms.
| Symptom | Trouble Area |
|---|---|
| The resistance between terminals 6 (CANH) and 16 (BAT), or terminals 14 (CANL) and 16 (BAT) of the DLC3 is below 6 kohms. | Short to B+ in CAN bus wire Skid control ECU Steering angle sensor Yaw rate sensor ECM Combination meter Main body ECU A/C amplifier Gateway ECU Active control engine mount ECU Display and navigation module display Center airbag sensor CAN No. 2 J/C CAN No. 5 J/C |
Scheme 76
Scheme 77
A short to GND is suspected in the CAN bus wire when the resistance between terminals 4 (CG) and 6 (CANH), or terminals 4 (CG) and 14 (CANL) of the DLC3 is below 200 ohms.
| Symptoms | Trouble Area |
|---|---|
| The resistance between terminals 6 (CANH) and 4 (CG), or terminals 14 (CANL) and 4 (CG) of the DLC3 is below 200 ohms. | Short to GND in CAN bus wire ECM Combination meter Skid control ECU Steering angle sensor Yaw rate sensor Main Body ECU A/C amplifier Center airbag sensor Gateway ECU Active control engine mount ECU Display and navigation module display CAN No. 2 J/C CAN No. 5 J/C |
If some ECUs and sensors are not displayed on the "CAN Bus Check" screen of the Techstream and some ECUs and sensors repeatedly appear and disappear from the screen when the CAN main bus wires are normal (there is no open, short, short to B+, or short to GND in the main bus wires), there may be an open circuit in either of the CAN branch wires.
HINT
If some ECUs and sensors repeatedly appear and disappear from the "CAN Bus Check" screen, communication between the normal ECUs (sensors) and the Techstream may be affected by the incomplete signals that are output from the ECU that has an open circuit in either of its CAN branch wires. In this case, the CAN branch wires for the ECUs and sensors that repeatedly appear and disappear from the screen are normal and the ECU that is not displayed on the screen may be the main cause of the problem (this ECU may have an open circuit in either of its CAN branch wires).
| Symptom | Trouble Area |
|---|---|
| 2 or more ECUs and/or sensors do not appear on the Techstream "CAN Bus Check" screen via the CAN VIM. | One side of the CAN branch wire is open Skid control ECU Steering angle sensor Yaw rate sensor ECM Gateway ECU Combination meter A/C amplifier Active control engine mount ECU Main body ECU Center airbag sensor Display and navigation module display |