Problem Symptoms Table [08/2016 - ]

WARNING: This page is about a different car, the 2018 Toyota Corolla, 2017 Toyota Corolla, 2016 Toyota Corolla, 2015 Toyota Corolla, and 2014 Toyota Corolla. However, it is still accessible from the selected car via links, so may be relevant.

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 [08/2016 - ]

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 [08/2016 - ]
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 [08/2016 - ]
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 [08/2016 - ]
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 [08/2016 - ]
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 [08/2016 - ]
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 [08/2016 - ]
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 [08/2016 - ]
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 [08/2016 - ]
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 [08/2016 - ]
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 [08/2016 - ]
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 [08/2016 - ]
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 [08/2016 - ]
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 [08/2016 - ]
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 [08/2016 - ]
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 [08/2016 - ]

COMMUNICATION STOP MODE TABLE

HINT:

*1: for 2ZR-FE
*2: for 2ZR-FAE
*3: If "ECM (Engine)" only is displayed and communication stop for "VALVEMATIC Driver" is indicated, a local CAN communication error between the ECM and continuously variable valve lift controller assembly is suspected. (Output DTC: U011B)
*4: for Radio and Display Type
*5: for Navigation Receiver Type

DTC COMBINATION TABLE

Symptom	Suspected Area	Link
Although CAN communication is currently normal, an ECU connected to the CAN communication system has 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 [08/2016 - ]

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 [08/2016 - ]
Communication stop for "Air Conditioning Amplifier" is indicated on the "Communication Bus Check" screen of the Techstream.	Air Conditioning Amplifier Communication Stop Mode	Refer to Air Conditioning Amplifier Communication Stop Mode [08/2016 - ]
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 [08/2016 - ]
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 [08/2016 - ]
Communication stop for "ECM (Engine)" is indicated on the "Communication Bus Check" screen of the Techstream.*1	ECM Communication Stop Mode	Refer to ECM Communication Stop Mode [08/2016 - ]
Communication stop for "ECM (Engine)" and "VALVEMATIC Driver"3 is indicated on the "Communication Bus Check" screen of the Techstream.2	ECM Communication Stop Mode	Refer to ECM Communication Stop Mode [08/2016 - ]
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 [08/2016 - ]
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 [08/2016 - ]
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 [08/2016 - ]
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 [08/2016 - ]
Communication stop for "Display and Navigation (AVN)" is indicated on the "Communication Bus Check" screen of the Techstream.*4	Radio Receiver Assembly Communication Stop Mode	Refer to Radio Receiver Assembly Communication Stop Mode [08/2016 - ]
Communication stop for "Display and Navigation (AVN)" is indicated on the "Communication Bus Check" screen of the Techstream.*5	Navigation Receiver Assembly Communication Stop Mode	Refer to Navigation Receiver Assembly Communication Stop Mode [08/2016 - ]
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 [08/2016 - ]
Communication stop for "CAN Gateway1" and/or "CAN Gateway2" is indicated on the "Communication Bus Check" screen of the Techstream.	Central Gateway ECU Communication Stop Mode	Refer to Central Gateway ECU Communication Stop Mode [08/2016 - ]
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 [08/2016 - ]
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 [08/2016 - ]