Problem Symptoms Table [11/2017 - 03/2019]

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 [11/2017 - 03/2019]

RESULT LIST OF HOW TO PROCEED WITH TROUBLESHOOTING

Symptom	Suspected Area	Link
The result of "How to Proceed with Troubleshooting" is "Open in Bus 2 Main Bus Line".	Open in Bus 2 Main Bus Line	Refer to Open in Bus 2 Main Bus Line [11/2017 - ]
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 [11/2017 - 03/2019]
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 [11/2017 - 03/2019]
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 [11/2017 - 03/2019]
The result of "How to Proceed with Troubleshooting" is "Open in One Side of Bus 2 Branch Line".	Open in One Side of Bus 2 Branch Line	Refer to Open in One Side of Bus 2 Branch Line [11/2017 - 03/2019]
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 [11/2017 - 03/2019]
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 [11/2017 - 03/2019]
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 [11/2017 - 03/2019]
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 [11/2017 - 03/2019]
The result of "How to Proceed with Troubleshooting" is "Open in One Side of Bus 3 Branch Line".	Open in One Side of Bus 3 Branch Line	Refer to Open in One Side of Bus 3 Branch Line [11/2017 - ]
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 [11/2017 - 09/2020]
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 [11/2017 - 09/2020]
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 [11/2017 - 03/2019]
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 [11/2017 - 03/2019]
The result of "How to Proceed with Troubleshooting" is "Open in One Side of Bus 5 Branch Line".	Open in One Side of Bus 5 Branch Line	Refer to Open in One Side of Bus 5 Branch Line [11/2017 - 01/2023]

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

HINT:

*1: w/ Intuitive Parking Assist System
*2: for Single Beam Headlight
*3: w/ Blind Spot Monitor System
*4: for Lexus Enform Remote Compatible Type
*5: w/ ASC System
*6: w/ Torque Vectoring Differential System

DTC COMBINATION TABLE

Symptom	Suspected Area	Link
Although CAN communication is currently normal, ECUs connected to the bus 2, bus 3 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 [11/2017 - 03/2019]

Symptom	Suspected Area	Link
Communication stop for "Skid Control (ABS/VSC/TRAC)" is indicated on the "Communication Bus Check" screen of the Techstream.	Brake Actuator (Skid Control ECU) Communication Stop Mode	Refer to Brake Actuator (Skid Control ECU) Communication Stop Mode [11/2017 - 01/2023]
Communication stop for "Clearance Warning (Intuitive Parking Assist)" is indicated on the "Communication Bus Check" screen of the Techstream.*1	Clearance Warning ECU Communication Stop Mode	Refer to Clearance Warning ECU Communication Stop Mode [11/2017 - 09/2020]
Communication stop for "Air Conditioning Amplifier" is indicated on the "Communication Bus Check" screen of the Techstream.	Air Conditioner Amplifier Communication Stop Mode	Refer to Air Conditioning Amplifier Communication Stop Mode [11/2017 - ]
Communication stop for "Power Steering (EPS)" is indicated on the "Communication Bus Check" screen of the Techstream.	Power Steering ECU Communication Stop Mode	Refer to Power Steering ECU Communication Stop Mode [11/2017 - ]
Communication stop for "Spiral cable (Steering Angle Sensor)" is indicated on the "Communication Bus Check" screen of the Techstream.	Steering Angle Sensor Communication Stop Mode	Refer to Steering Angle Sensor Communication Stop Mode [11/2017 - ]
Communication stop for "Yaw Rate Sensor" is indicated on the "Communication Bus Check" screen of the Techstream.	Yaw Rate Sensor Communication Stop Mode	Refer to Yaw Rate Sensor Communication Stop Mode [11/2017 - ]
Communication stop for "ECM (Engine)" is indicated on the "Communication Bus Check" screen of the Techstream.	ECM Communication Stop Mode	Refer to ECM Communication Stop Mode [11/2017 - ]
Communication stop for "Main Body" is indicated on the "Communication Bus Check" screen of the Techstream.	Main Body ECU Communication Stop Mode	Refer to Main Body ECU Communication Stop Mode [11/2017 - ]
Communication stop for "Combination Meter" is indicated on the "Communication Bus Check" screen of the Techstream.	Combination Meter ECU Communication Stop Mode	Refer to Combination Meter ECU Communication Stop Mode [11/2017 - ]
Communication stop for "Certification (Smart)" is indicated on the "Communication Bus Check" screen of the Techstream.	Certification ECU Communication Stop Mode	Refer to Certification ECU Communication Stop Mode [11/2017 - ]
Communication stop for "Airbag" is indicated on the "Communication Bus Check" screen of the Techstream.	Center Airbag Sensor Communication Stop Mode	Refer to Center Airbag Sensor Communication Stop Mode [11/2017 - ]
Communication stop for "Suspension Control (Air Suspension)" is indicated on the "Communication Bus Check" screen of the Techstream.	Suspension Control ECU Communication Stop Mode	Refer to Suspension Control ECU Communication Stop Mode [11/2017 - 01/2023]
Communication stop for "Headlight swivel (AFS)" is indicated on the "Communication Bus Check" screen of the Techstream.*2	AFS ECU Communication Stop Mode	Refer to AFS ECU Communication Stop Mode [11/2017 - 03/2019]
Communication stop for "Display and Navigation (AVN)" is indicated on the "Communication Bus Check" screen of the Techstream.	Radio Receiver Assembly Communication Stop Mode	Refer to Radio Receiver Assembly Communication Stop Mode [11/2017 - 03/2019]
Communication stop for "Blind Spot Monitor Master" is indicated on the "Communication Bus Check" screen of the Techstream.*3	Blind Spot Monitor Sensor Communication Stop Mode	Refer to Blind Spot Monitor Sensor Communication Stop Mode [11/2017 - ]
Communication stop for "Active Rear Wing" is indicated on the "Communication Bus Check" screen of the Techstream.	Spoiler Control ECU Communication Stop Mode	Refer to Spoiler Control ECU Communication Stop Mode [11/2017 - ]
Communication stop for "Accessory Gateway" is indicated on the "Communication Bus Check" screen of the Techstream.	Bus Buffer ECU Communication Stop Mode	Refer to Bus Buffer ECU Communication Stop Mode [11/2017 - 03/2019]
Communication stop for "DCM" is indicated on the "Communication Bus Check" screen of the Techstream.*4	DCM Communication Stop Mode	Refer to DCM Communication Stop Mode [11/2017 - 03/2019]
Communication stop for "Active Sound Control" is indicated on the "Communication Bus Check" screen of the Techstream.*5	ASC ECU Communication Stop Mode	Refer to ASC ECU Communication Stop Mode [11/2017 - ]
Communication stop for "Driving Support (Cruise Control-ACC)" is indicated on the "Communication Bus Check" screen of the Techstream.	Driving Support ECU Communication Stop Mode	Refer to Driving Support ECU Communication Stop Mode [11/2017 - 01/2023]
Communication stop for "Front Radar" is indicated on the "Communication Bus Check" screen of the Techstream.	Millimeter Wave Radar Sensor Communication Stop Mode	Refer to Millimeter Wave Radar Sensor Communication Stop Mode [11/2017 - 09/2020]
Communication stop for "Parking Assist Monitor System / Rear Camera" is indicated on the "Communication Bus Check" screen of the Techstream.	Rear Television Camera Communication Stop Mode	Refer to Rear Television Camera Communication Stop Mode [11/2017 - ]
Communication stop for "Front Camera Module" is indicated on the "Communication Bus Check" screen of the Techstream.	Front Camera Module Communication Stop Mode	Refer to Front Camera Module Communication Stop Mode [11/2017 - 09/2020]
Communication stop for "TVD" is indicated on the "Communication Bus Check" screen of the Techstream.*6	Torque Vectoring Differential ECU Communication Stop Mode	Refer to Torque Vectoring Differential ECU Communication Stop Mode [11/2017 - 01/2023]