CAN COMMUNICATION SYSTEM(for RHD without Central Gateway ECU) PROBLEM SYMPTOMS TABLE

Tip:

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.
Click here

Table 1. Result List of How to Proceed with Troubleshooting
Symptom	Suspected Area	Link
Open in CAN Main Bus Line	Open in CAN Main Wire	Click here
Short in CAN Bus Lines	Short in CAN Bus Lines	Click here Click here
Short to +B in CAN Bus Line	Short to B+ in CAN Bus Line	Click here Click here
Short to GND in CAN Bus Line	Short to GND in CAN Bus Line	Click here Click here
Open in One Side of CAN Branch Line	Open in One Side of CAN Branch Line	Click here

Tip:

Refer to How to Proceed with Troubleshooting for the Bus Check procedure. the DTCs output from ECUs connected to the CAN communication system.

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 table below.

Table 2. Communication Stop Mode Table
Symptom	Suspected Area	Link
"Skid Control (ABS/VSC/TRAC)" is not displayed on GTS	Skid Control ECU Communication Stop Mode	Click here Click here
"Air Conditioning Amplifier" is not displayed on GTS	Air Conditioning Amplifier Communication Stop Mode	Click here
"Power Steering (EPS)" is not displayed on GTS	Power Steering ECU Communication Stop Mode	Click here
"Spiral cable (Steering Angle Sensor)" is not displayed on GTS	Steering Angle Sensor Communication Stop Mode	Click here
"ECM (Engine)" is not displayed on the GTS	ECM Communication Stop Mode	Click here
"Main Body" is not displayed on the GTS	Main Body ECU Communication Stop Mode	Click here
"Combination Meter" is not displayed on the GTS	Combination Meter ECU Communication Stop Mode	Click here
"Airbag" is not displayed on the GTS	Center Airbag Sensor Communication Stop Mode	Click here
"Stop and Go/Start" is not displayed on the GTS (w/ Stop and Start System)	Engine Stop and Start ECU Communication Stop Mode	Click here
"Four Wheel Drive Control" is not displayed on the GTS (for 4WD/AWD)	4WD Control ECU Communication Stop Mode	Click here
"Display and Navigation (AVN1)" is not displayed on the GTS (w/ Audio and Visual System [for Radio and Display Type])	Audio Receiver Assembly Communication Stop Mode	Click here

Table 3. DTC Combination Table
Symptom	Suspected Area	Link
Although CAN communication (V bus) is currently normal, ECUs connected to the V bus store CAN communication DTCs	The probable part for which communication is interrupted can be determined using DTC Communication Table and comparing the DTCs output from ECUs connected to the CAN communication system	Click here Click here