Problem Symptoms Table [10/2015 - 12/2017]
HINT:
- Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
- Inspect the fuses and relays related to this system before inspecting the suspected areas below.
- Because the order of diagnosis is important to allow correct diagnosis, make sure to begin troubleshooting using How to Proceed with Troubleshooting when CAN communication system related DTCs are output.
Refer to HOW TO PROCEED WITH TROUBLESHOOTING [10/2015 - 08/2019]
RESULT LIST OF HOW TO PROCEED WITH TROUBLESHOOTING
| Symptom | Suspected Area | Link |
|---|---|---|
| The result of "How to Proceed with Troubleshooting" is "Open in Bus 1 Main Bus Line". | Open in Bus 1 Main Bus Line | Refer to Open in Bus 1 Main Bus Line [10/2015 - ] |
| The result of "How to Proceed with Troubleshooting" is "Short in Bus 1 Lines". | Short in Bus 1 Lines | Refer to Check Bus 1 Lines for Short Circuit [10/2015 - 12/2017] |
| The result of "How to Proceed with Troubleshooting" is "Short to +B in Bus 1 Line". | Short to +B in Bus 1 Line | Refer to Check Bus 1 Line for Short to +B [10/2015 - 12/2017] |
| The result of "How to Proceed with Troubleshooting" is "Short to GND in Bus 1 Line". | Short to GND in Bus 1 Line | Refer to Check Bus 1 Line for Short to GND [10/2015 - 12/2017] |
| The result of "How to Proceed with Troubleshooting" is "Open in Bus 2 Main Bus Line". | Open in Bus 2 Main Bus Line | Refer to Open in Bus 2 Main Bus Line [10/2015 - 12/2017] |
| The result of "How to Proceed with Troubleshooting" is "Short in Bus 2 Lines". | Short in Bus 2 Lines | Refer to Check Bus 2 Lines for Short Circuit [10/2015 - 12/2017] |
| The result of "How to Proceed with Troubleshooting" is "Short to +B in Bus 2 Line". | Short to +B in Bus 2 Line | Refer to Check Bus 2 Line for Short to +B [10/2015 - 12/2017] |
| The result of "How to Proceed with Troubleshooting" is "Short to GND in Bus 2 Line". | Short to GND in Bus 2 Line | Refer to Check Bus 2 Line for Short to GND [10/2015 - 12/2017] |
| The result of "How to Proceed with Troubleshooting" is "Open in Bus 3 Main Bus Line". | Open in Bus 3 Main Bus Line | Refer to Open in Bus 3 Main Bus Line [10/2015 - ] |
| The result of "How to Proceed with Troubleshooting" is "Short in Bus 3 Lines". | Short in Bus 3 Lines | Refer to Check Bus 3 Lines for Short Circuit [10/2015 - 12/2017] |
| The result of "How to Proceed with Troubleshooting" is "Short to +B in Bus 3 Line". | Short to +B in Bus 3 Line | Refer to Check Bus 3 Line for Short to +B [10/2015 - 12/2017] |
| The result of "How to Proceed with Troubleshooting" is "Short to GND in Bus 3 Line". | Short to GND in Bus 3 Line | Refer to Check Bus 3 Line for Short to GND [10/2015 - 12/2017] |
| The result of "How to Proceed with Troubleshooting" is "Open in Bus 4 Main Bus Line". | Open in Bus 4 Main Bus Line | Refer to Open in Bus 4 Main Bus Line [10/2015 - 08/2019] |
| The result of "How to Proceed with Troubleshooting" is "Short in Bus 4 Lines". | Short in Bus 4 Lines | Refer to Check Bus 4 Lines for Short Circuit [10/2015 - 08/2019] |
| The result of "How to Proceed with Troubleshooting" is "Short to +B in Bus 4 Line". | Short to +B in Bus 4 Line | Refer to Check Bus 4 Line for Short to +B [10/2015 - 08/2019] |
| The result of "How to Proceed with Troubleshooting" is "Short to GND in Bus 4 Line". | Short to GND in Bus 4 Line | Refer to Check Bus 4 Line for Short to GND [10/2015 - 08/2019] |
| The result of "How to Proceed with Troubleshooting" is "Open in Bus 5 Main Bus Line". | Open in Bus 5 Main Bus Line | Refer to Open in Bus 5 Main Bus Line [10/2015 - ] |
| The result of "How to Proceed with Troubleshooting" is "Short in Bus 5 Lines". | Short in Bus 5 Lines | Refer to Check Bus 5 Lines for Short Circuit [10/2015 - ] |
| The result of "How to Proceed with Troubleshooting" is "Short to +B in Bus 5 Line". | Short to +B in Bus 5 Line | Refer to Check Bus 5 Line for Short to +B [10/2015 - 08/2019] |
| The result of "How to Proceed with Troubleshooting" is "Short to GND in Bus 5 Line". | Short to GND in Bus 5 Line | Refer to Check Bus 5 Line for Short to GND [10/2015 - 08/2019] |
HINT:
- Refer to How to Proceed with Troubleshooting for the Bus Check procedure.
- The suspected communication stop area can be determined based on the ECU or sensor that was not displayed in CAN Bus Check and by referring to the following table.
COMMUNICATION STOP MODE TABLE
| Symptom | Suspected Area | Link |
|---|---|---|
| "Hybrid Vehicle Control" is not displayed on the Techstream. | Hybrid Vehicle Control ECU Communication Stop Mode | Refer to Hybrid Vehicle Control ECU Communication Stop Mode [10/2015 - 12/2017] |
| "Skid Control (ABS/VSC/TRAC)" is not displayed on the Techstream. | Skid Control ECU Communication Stop Mode | Refer to Skid Control ECU Communication Stop Mode [10/2015 - 12/2017] |
| "Clearance Warning (ClearanceSonar2)" is not displayed on the Techstream. | Clearance Warning ECU Communication Stop Mode | Refer to Clearance Warning ECU Communication Stop Mode [10/2015 - ] |
| "Air Conditioning Amplifier" is not displayed on the Techstream. | Air Conditioner Amplifier Communication Stop Mode | Refer to Air Conditioning Amplifier Communication Stop Mode [10/2015 - ] |
| "Power Steering (EPS)" is not displayed on the Techstream. | Power Steering ECU Communication Stop Mode | Refer to Power Steering ECU Communication Stop Mode [10/2015 - ] |
| "Spiral cable (Steering Angle Sensor)" is not displayed on the Techstream. | Steering Angle Sensor Communication Stop Mode | Refer to Steering Angle Sensor Communication Stop Mode [10/2015 - ] |
| "Yaw Rate Sensor" is not displayed on the Techstream. | Yaw Rate Sensor Communication Stop Mode | Refer to Yaw Rate Sensor Communication Stop Mode [10/2015 - ] |
| "ECM (Engine)" are not displayed on the Techstream. | ECM Communication Stop Mode | Refer to ECM Communication Stop Mode [10/2015 - 12/2017] |
| "Main Body" is not displayed on the Techstream. | Main Body ECU Communication Stop Mode | Refer to Main Body ECU Communication Stop Mode [10/2015 - ] |
| "Combination Meter" is not displayed on the Techstream. | Combination Meter ECU Communication Stop Mode | Refer to Combination Meter ECU Communication Stop Mode [10/2015 - ] |
| "Certification (Smart)" is not displayed on the Techstream. | Certification ECU Communication Stop Mode | Refer to Certification ECU Communication Stop Mode [10/2015 - ] |
| "Airbag" is not displayed on the Techstream. | Center Airbag Sensor Communication Stop Mode | Refer to Center Airbag Sensor Communication Stop Mode [10/2015 - 08/2019] |
| "Suspension Control (Air Suspension1)" is not displayed on the Techstream.*1 | Suspension Control ECU Communication Stop Mode | Refer to Suspension Control ECU Communication Stop Mode [10/2015 - ] |
| "Headlight swivel (AFS)" is not displayed on the Techstream.*2 | AFS ECU Communication Stop Mode | Refer to AFS ECU Communication Stop Mode [10/2015 - ] |
| "Electric Parking Brake" is not displayed on the Techstream. | Electric Parking Brake ECU Communication Stop Mode | Refer to Electric Parking Brake ECU Communication Stop Mode [10/2015 - 03/2018] |
| "Display and Navigation (AVN1)" is not displayed on the Techstream. | Radio Receiver Assembly Communication Stop Mode | Refer to Radio Receiver Assembly Communication Stop Mode [10/2015 - 12/2017] |
| "Blind Spot Monitor Master" is not displayed on the Techstream. | Blind Spot Monitor Sensor Communication Stop Mode | Refer to Blind Spot Monitor Sensor Communication Stop Mode [10/2015 - ] |
| "Panoramic View Monitor" is not displayed on the Techstream.*3 | Parking Assist ECU Communication Stop Mode | Refer to Parking Assist ECU Communication Stop Mode [10/2015 - 08/2019] |
| "DCM" is not displayed on the Techstream.*4 | DCM Communication Stop Mode | Refer to DCM Communication Stop Mode [10/2015 - 08/2019] |
| "Driving Support (Cruise Control-ACC)" is not displayed on the Techstream.*5 | Driving Support ECU Communication Stop Mode | Refer to Driving Support ECU Communication Stop Mode [10/2015 - 08/2019] |
| "Front Radar" is not displayed on the Techstream.*5 | Millimeter Wave Radar Sensor Communication Stop Mode | Refer to Millimeter Wave Radar Sensor Communication Stop Mode [10/2015 - ] |
| "Front Camera" is not displayed on the Techstream.*3 | Front television Camera Communication Stop Mode | Refer to Front Television Camera Communication Stop Mode [10/2015 - 08/2019] |
| "Parking Assist Monitor System" is not displayed on the Techstream. | Rear television Camera Communication Stop Mode | Refer to Rear Television Camera Communication Stop Mode [10/2015 - ] |
| "Side Camera LH" is not displayed on the Techstream.*3 | Side television Camera LH Communication Stop Mode | Refer to Side Television Camera LH Communication Stop Mode [10/2015 - 08/2019] |
| "Side Camera RH" is not displayed on the Techstream.*3 | Side television Camera RH Communication Stop Mode | Refer to Side Television Camera RH Communication Stop Mode [10/2015 - 08/2019] |
| "Occupant Detection" is not displayed on the Techstream. | Restraints Occupant Classification System Module Communication Stop Mode | Refer to Restraints Occupant Classification System Module Communication Stop Mode [10/2015 - ] |
| "Head Up Display" is not displayed on the Techstream.*6 | Combination Meter Mirror ECU Communication Stop Mode | Refer to Combination Meter Mirror ECU Communication Stop Mode [10/2015 - ] |
| "Front Camera Module" is not displayed on the Techstream.*5 | Front Camera Module Communication Stop Mode | Refer to Front Camera Module Communication Stop Mode [10/2015 - ] |
| "Tire Pressure" is not displayed on the Techstream. | Tire Pressure Monitor ECU Communication Stop Mode | Refer to Tire Pressure Monitor ECU Communication Stop Mode [10/2015 - 03/2018] |
HINT:
- *1: w/ AVS
- *2: w/ Automatic Headlight Beam Level Control System
- *3: w/ Panoramic View Monitor System
- *4: w/ Manual (SOS) Switch
- *5: w/ Lexus Safety System +
- *6: w/ Headup Display System
DTC COMBINATION TABLE
| Symptom | Suspected Area | Link |
|---|---|---|
| Although CAN communication is currently normal, ECUs connected to the bus 1, bus 2, bus 3, bus 4 and bus 5 store CAN communication DTCs. | The probable part for which communication is interrupted can be determined using DTC Combination Table and comparing the DTCs output from ECUs connected to the CAN communication system. | Refer to DTC COMBINATION TABLE [10/2015 - 08/2016] , or refer to DTC COMBINATION TABLE [08/2016 - 08/2018] |