DESCRIPTION
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| U0100 | No communication from the ECM continues. | ECM main line or connector Power source circuit of ECM ECM |
HINT
This diagnosis procedure is for when DTC U0100 is output by the power management control ECU (Techstream display: PM2 Gateway).
Scheme 107
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| U0104 | No communication from the driving support ECU continues. | Driving support ECU assembly branch line or connector Power source circuit of driving support ECU assembly Driving support ECU assembly |
HINT
This diagnosis procedure is for when DTC U0104 is output by the power management control ECU (Techstream display: PM1 Gateway).
Scheme 108
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| U0129 | No communication from the skid control ECU continues. | Skid control ECU branch line or connector Power source circuit of skid control ECU Skid control ECU (Brake booster with master cylinder assembly) |
HINT
This diagnosis procedure is for when DTC U0129 is output by the power management control ECU (Techstream display: PM2 Gateway).
Scheme 109
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| U0164 | No communication from the air conditioning amplifier assembly continues. | Air conditioning amplifier assembly branch line or connector Power source circuit of air conditioning amplifier assembly Air conditioning amplifier assembly |
HINT
This diagnosis procedure is for when DTC U0164 is output by the power management control ECU (Techstream display: PM2 Gateway).
Scheme 110
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| U0199 | No communication from the outer mirror control ECU assembly continues. | Outer mirror control ECU assembly (Front passenger side) branch line or connector Power source circuit of outer mirror control ECU assembly (Front passenger side) Outer mirror control ECU assembly (Front passenger side) |
HINT
This diagnosis procedure is for when DTC U0199 is output by the main body ECU (Techstream display: Main Body).
Scheme 111
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| U0200 | No communication from the outer mirror control ECU assembly continues. | Outer mirror control ECU assembly (Driver side) branch line or connector Power source circuit of outer mirror control ECU assembly (Driver side) Outer mirror control ECU assembly (Driver side) |
HINT
This diagnosis procedure is for when DTC U0200 is output by the main body ECU (Techstream display: Main Body).
Scheme 112
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| U0208 | No communication from the position control ECU and switch assembly continues. | Position control ECU and switch assembly branch line or connector Power source circuit of position control ECU and switch assembly Position control ECU and switch assembly |
HINT
This diagnosis procedure is for when DTC U0208 is output by the main body ECU (Techstream display: Main Body).
Scheme 113
- 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 a response signal from the ECUs connected to the CAN MS bus, the main body ECU recognizes and memorizes that the ECU is 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 |
|---|---|---|
| U1002 | 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 CAN MS bus main line or connector Open or short in CAN MS bus branch line or connector Main body ECU (Multiplex network body ECU) Outer mirror control ECU assembly (Driver side) Outer mirror control ECU (Front passenger side) Position control ECU and switch assembly CAN No. 6 junction connector |
HINT
This diagnosis procedure is for when DTC U1002 is output by the main body ECU (Techstream display: Main Body).
Scheme 114
- The power management control 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 V2 bus.
- When the power management control ECU receives a response signal from the ECUs connected to the V2 bus, the power management control ECU recognizes and memorizes that the ECU is connected to the V2 bus. Based on this memorized data, the power management control ECU monitors for malfunctions in the ECUs connected to the V2 bus when communicating with those ECUs. If the power management control ECU cannot receive response signals from the ECUs that have been memorized as those connected to the V2 bus, the power management control ECU determines that a malfunction exists.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| U1002 | Power management control ECU cannot receive signals from all ECUs that have been memorized as those connected to the V2 bus. | Open or short in V2 bus main line or connector Open or short in V2 bus branch line or connector Power management control ECU Driving support ECU assembly Seat belt control ECU Parking assist ECU Clearance warning ECU assembly CAN No. 4 junction connector |
HINT
This diagnosis procedure is for when DTC U1002 is output by the power management control ECU (Techstream display: PM1 Gateway).
Scheme 115
- The power management control 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 power management bus.
- When the power management control ECU receives a response signal from the ECUs connected to the power management bus, the power management control ECU recognizes and memorizes that the ECU is connected to the power management bus. Based on this memorized data, the power management control ECU monitors for malfunctions in the ECUs connected to the power management bus when communicating with those ECUs. If the power management control ECU cannot receive response signals from the ECUs that have been memorized as those connected to the power management bus, the power management control ECU determines that a malfunction exists.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| U1002 | Power management control ECU cannot receive signals from all ECUs that have been memorized as those connected to the power management bus. | Open or short in power management bus main line or connector Open or short in power management bus branch line or connector Power management control ECU ECM Air conditioning amplifier assembly Skid control ECU (Brake booster with master cylinder assembly) CAN No. 1 junction connector CAN No. 5 junction connector |
HINT
This diagnosis procedure is for when DTC U1002 is output by the power management control ECU (Techstream display: PM2 Gateway).
Scheme 116
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| U1100 | No communication from the seat belt control ECU continues. | Seat belt control ECU branch line or connector Power source circuit of seat belt control ECU Seat belt control ECU |
HINT
This diagnosis procedure is for when DTC U1100 is output by the power management control ECU (Techstream display: PM1 Gateway).
Scheme 117
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| U110B | No communication from the parking assist ECU continues. | Parking assist ECU branch line or connector Power source circuit of parking assist ECU Parking assist ECU |
HINT
This diagnosis procedure is for when DTC U110B is output by the power management control ECU (Techstream display: PM1 Gateway).
Scheme 118
| DTC Code | DTC Detection Condition | Trouble Area |
|---|---|---|
| U1110 | No communication from clearance warning ECU assembly | Clearance warning ECU assembly branch line or connector Power source circuit of clearance warning ECU assembly Clearance warning ECU assembly |
HINT
This diagnosis procedure is for when DTC U1110 is output by the power management control ECU (Techstream display: PM1 Gateway).
Scheme 119
| 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 DTC Combination Table. | Skid control ECU branch line or connector Power source circuit of Skid control ECU Skid control ECU (Brake booster with master cylinder assembly) |
Scheme 120
| Detection Item | Symptom | Trouble Area |
|---|---|---|
| Power Steering ECU Communication Stop Mode | "EPS" is not displayed on the "CAN Bus Check" screen of the Techstream. Applies to Power Steering ECU Communication Stop Mode in DTC Combination Table. | Power steering ECU assembly branch line or connector Power source circuit of power steering ECU assembly Power steering ECU assembly |
Scheme 121
| 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 DTC Combination Table. | Steering angle sensor branch line or connector Power source circuit of steering angle sensor Steering angle sensor (Spiral cable with sensor sub-assembly) |
Scheme 122
| Detection Item | Symptom | Trouble Area |
|---|---|---|
| Yaw Rate Sensor Communication Stop Mode | "Yaw Rate/Decelerate Sensor" is not displayed on the "CAN Bus Check" screen of the Techstream. Applies to Yaw Rate Sensor Communication Stop Mode in DTC Combination Table. | Yaw rate and acceleration sensor branch line or connector Power source circuit of yaw rate and acceleration sensor Yaw rate and acceleration sensor |
Scheme 123
| Detection Item | Symptom | Trouble Area |
|---|---|---|
| ECM Communication Stop Mode | "Engine" are not displayed on the "CAN Bus Check" screen of the Techstream. Applies to ECM Communication Stop Mode in DTC Combination Table. | Power source circuit of ECM ECM main line or connector ECM |
Scheme 124
The transmission control ECU drives the parking lock actuator in accordance with signals from the power management control ECU.
| Detection Item | Symptom | Trouble Area |
|---|---|---|
| Transmission Control ECU Communication Stop Mode | "Transmission Control " is not displayed on the "CAN Bus Check" screen of the Techstream. Applies to Transmission Control ECU Communication Stop Mode in DTC Combination Table. | Transmission control ECU assembly branch line or connector Power source circuit of transmission control ECU assembly Transmission control ECU assembly |
Scheme 125
| 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 DTC Combination Table. | Main body ECU branch line or connector Power source circuit of Main body ECU Main body ECU (Multiplex network body ECU) |
Scheme 126
| Detection Item | Symptom | Trouble Area |
|---|---|---|
| Power Management Control ECU Communication Stop Mode | "Hybrid Control" and/or "Power Management 1" is not displayed on the "CAN Bus Check" screen of the Techstream. Applies to Power Management Control ECU Communication Stop Mode in DTC Combination Table. | Power management control ECU branch line or connector Power source circuit of power management control ECU Power management control ECU |
Scheme 127
| 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 DTC Combination Table. | Combination meter assembly main line or connector Power source circuit of combination meter assembly Combination meter assembly |
Scheme 128
| Detection Item | Symptom | Trouble Area |
|---|---|---|
| Certification ECU Communication Stop Mode | "Smart Access/Smart Key/Wireless Tuner" is not displayed on the "CAN Bus Check" screen of the Techstream. Applies to Certification ECU Communication Stop Mode in DTC Combination Table. | Certification ECU branch line or connector Power source circuit of Certification ECU Certification ECU (Smart key ECU assembly) |
Scheme 129
| 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 DTC Combination Table. | Airbag sensor assembly branch line or connector Power source circuit of airbag sensor assembly Airbag sensor assembly |
Scheme 130
| Detection Item | Symptom | Trouble Area |
|---|---|---|
| Navigation ECU Communication Stop Mode | "AVN1" is not displayed on the "CAN Bus Check" screen of the Techstream Applies to Navigation ECU Communication Stop Mode in DTC Combination Table | Navigation ECU branch line or connector Power source circuit of Navigation ECU Navigation ECU (Display and navigation module display)*1 Navigation ECU (Navigation computer sub-assembly)*2 |
- *1: w/ Navigation System (for DVD)
- *2: w/ Navigation System (for HDD)
Scheme 131
There may be an open circuit one of the CAN V1 bus main lines and/or a DLC3 branch line when the resistance between terminals 6 (CANH) and 14 (CANL) of the DLC3 is 70 ohms or higher.
| Symptom | Trouble Area |
|---|---|
| Resistance between terminals 6 (CANH) and 14 (CANL) of DLC3 is 70 ohms or higher. | DLC3 branch line or connector CAN main bus line or connector ECM Combination meter assembly CAN No. 1 junction connector CAN No. 2 junction connector CAN No. 3 junction connector |
Scheme 132
There may be a short circuit between the V1 bus main lines and/or CAN branch lines 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 DLC3 is below 54 ohms. | Short in CAN main bus line Short in CAN branch line Power management control ECU ECM Main body ECU (Multiplex network body ECU) Combination meter assembly Skid control ECU (Brake booster with master cylinder assembly) Steering angle sensor (Spiral cable with sensor sub-assembly) Yaw rate and acceleration sensor Power steering ECU assembly Airbag sensor assembly Transmission control ECU assembly Certification ECU (Smart key ECU assembly) Navigation ECU (Display and navigation module display)*1 Navigation ECU (Navigation computer sub-assembly)*2 CAN No. 1 junction connector CAN No. 2 junction connector CAN No. 3 junction connector |
*1: w/ Navigation system (for DVD)
*2: w/ Navigation system (for HDD)
Scheme 133
Scheme 134
There may be a short circuit between one of the CAN bus lines and +B when no resistance exists between terminals 6 (CANH) and 16 (BAT) or 14 (CANL) and 16 (BAT) of the DLC3.
| Symptom | Trouble Area |
|---|---|
| No resistance exists between terminals 6 (CANH) and 16 (BAT) or 14 (CANL) and 16 (BAT) of DLC3. | Short to +B in CAN main bus line Short to +B in CAN branch line Power management control ECU ECM Main body ECU (Multiplex network body ECU) Combination meter assembly Skid control ECU (Brake booster with master cylinder assembly) Steering angle sensor (Spiral cable with sensor sub-assembly) Yaw rate and acceleration sensor Power steering ECU assembly Airbag sensor assembly Transmission control ECU assembly Certification ECU (Smart key ECU assembly) Navigation ECU (Display and navigation module display)*1 Navigation ECU (Navigation computer sub-assembly)*2 CAN No. 1 junction connector CAN No. 2 junction connector CAN No. 3 junction connector |
*1: w/ Navigation system (for DVD)
*2: w/ Navigation system (for HDD)
There may be a short circuit between one of the CAN bus lines and GND when there is no resistance between terminals 6 (CANH) and 4 (CG) or 14 (CANL) and 4 (CG) of the DLC3.
| Symptom | Trouble Area |
|---|---|
| No resistance exists between terminals 6 (CANH) and 4 (CG) or 14 (CANL) and 4 (CG) of DLC3. | Short to ground in CAN main bus line Short to ground in CAN branch line Power management control ECU ECM Main body ECU (Multiplex network body ECU) Combination meter assembly Skid control ECU (Brake booster with master cylinder assembly) Steering angle sensor (Spiral cable with sensor sub-assembly) Yaw rate and acceleration sensor Power steering ECU assembly Airbag sensor assembly Transmission control ECU assembly Certification ECU (Smart key ECU assembly) Navigation ECU (Display and navigation module display)*1 Navigation ECU (Navigation computer sub-assembly)*2 CAN No. 1 junction connector CAN No. 2 junction connector CAN No. 3 junction connector |
*1: w/ Navigation system (for DVD)
*2: w/ Navigation system (for HDD)
If an ECU or sensor is 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 lines are normal (there is no open, short, short to B+ or short to GND in the main bus lines), there may be an open circuit in either of one pair of CAN branch lines.
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 lines. In this case, the CAN branch lines 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 lines).
| Symptom | Trouble Area |
|---|---|
| 2 or more ECUs and/or sensors do not appear on the Techstream "CAN Bus Check" screen. | One side of CAN branch line is open, or output signals are incomplete. Power management control ECU ECM Main body ECU (Multiplex network body ECU) Combination meter assembly Skid control ECU (Brake booster with master cylinder assembly) Steering angle sensor (Spiral cable with sensor sub-assembly) Yaw rate and acceleration sensor Power steering ECU assembly Airbag sensor assembly Transmission control ECU assembly Certification ECU (Smart key ECU assembly) Navigation ECU (Display and navigation module display)*1 Navigation ECU (Navigation computer sub-assembly)*2 |
*1: w/ Navigation system (for DVD)
*2: w/ Navigation system (for HDD)